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Message started by nervekiler on 12/14/07 at 19:32:57

Title: need to replace head gasket
Post by nervekiler on 12/14/07 at 19:32:57

hey i need to replace the head gasket on my bike.
are there any instructions online i can look at? i hope it will be easy.. gonna have to ride the bike this winter my car broke down :(

so anyways is there a writeup i can take a look at before i dive into this? or any advice from anyone?

thanks

Title: Re: need to replace head gasket
Post by verslagen1 on 12/14/07 at 20:42:57

It's just a couple more steps than replacing the cam chain.

Title: Re: need to replace head gasket
Post by Reelthing on 12/15/07 at 14:02:41

Why do need to replace the head gasket? if it's just an oil leak it's  most likely the rubber plug that is leaking -very common

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1099227295

Title: Re: need to replace head gasket
Post by Savage_Greg on 12/16/07 at 05:07:06

That's interesting.  You said, "Hope it will be easy".  That tells me that you don't know much about it or that you have never done that kind of thing before.  It might be a single cylinder engine but it is no less important to know all the details before you start replacing the head gasket.  You need to know the tools, procedure and specs before you start.

I suggest that you buy a manual (SSM or Clymer) before you do anything.  That way you won't have to rely on public transportation when both the car and bike become broke down.

Title: Re: need to replace head gasket
Post by verslagen1 on 12/19/07 at 19:18:38

wassup nervy?  Come on back and tell us about your bike.

Title: Re: need to replace head gasket
Post by Savage_Greg on 12/20/07 at 05:11:13

Yeah, I sent him a PM 'cause he's a local too :P

Title: Re: need to replace head gasket
Post by srinath on 12/20/07 at 12:10:48

Take it off and get the head true, deck it at a auto engine shop. Mine was off a good bit, and this was in a non leaking motor. I think 3 to 5  hundredths was about its warpage.
Cool.
Srinath.

Title: Re: need to replace head gasket
Post by Savage_Greg on 12/21/07 at 07:49:56


787962656A7F630B0 wrote:
Take it off and get the head true, deck it at a auto engine shop. Mine was off a good bit, and this was in a non leaking motor. I think 3 to 5  hundredths was about its warpage.
Cool.
Srinath.

I sincerely hope that you mean 3 to 5 thousandths...or .003-.005"

If it was .030-.050" you'd be buying a new head.

Come back, Nervekiler?

Title: Re: need to replace head gasket
Post by nervekiler on 12/25/07 at 20:21:30

sorry didnt have internet for a while.
so yeah when i got the bike the thing ran.. had typical backfires after i let off the throttle too abrubtly. every few start ups i noticed smoke coming out near where the exhuast exits the head.. i figured exhuast leak.
well warming up one day for a ride i noticed a big puff and lots of black smoke then the thing wouldnt start again. the gasket blew out between the head and the block part. i pretty much watched it blow and looked at a diagram on www.procaliber.com to figure out which parts were which. looks like the gasket is not too spendy.

Title: Re: need to replace head gasket
Post by Savage_Greg on 12/26/07 at 07:06:45


353E292D3E3032373E295B0 wrote:
sorry didnt have internet for a while.
so yeah when i got the bike the thing ran.. had typical backfires after i let off the throttle too abrubtly. every few start ups i noticed smoke coming out near where the exhuast exits the head.. i figured exhuast leak.
well warming up one day for a ride i noticed a big puff and lots of black smoke then the thing wouldnt start again. the gasket blew out between the head and the block part. i pretty much watched it blow and looked at a diagram on www.procaliber.com to figure out which parts were which. looks like the gasket is not too spendy.

You mean between the head and "cylinder"?

Oh man, skip Pro Caliber...there are a lot of places to get your parts without catering to that or any other dealership.  I only go there when I have to...

BTW - did you buy the bike at Pro Caliber?

Title: Re: need to replace head gasket
Post by nervekiler on 01/03/08 at 11:15:21

i did not purchase the bike at procaliber i know better than that. :)

where would be a good place to purchase the headgasket? im looking to get it ASAP. and the clymer manual is in the mail i just ordered it.

looking to get the bike running again so i can ride as weather permits... my car doesnt get great gas mileage so i really miss riding the bike.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/03/08 at 13:03:05


2C27303427292B2E2730420 wrote:
i did not purchase the bike at procaliber i know better than that. :)

where would be a good place to purchase the headgasket? im looking to get it ASAP. and the clymer manual is in the mail i just ordered it.

looking to get the bike running again so i can ride as weather permits... my car doesnt get great gas mileage so i really miss riding the bike.

Here's a good place.

http://www.bikebandit.com/suzuki/oem-parts

Title: Re: need to replace head gasket
Post by JakeB on 01/03/08 at 13:23:56

I found this site to generally be cheaper than bikebandit, ron ayers, and crotchrocket.com. http://www.mrcycles.com

JakeB

Just checked, http://www.crotchrocket.com/fiche_section_detail.asp is cheapest of the four mentioned above, $21.04 for the head gasket.

JakeB

Title: Re: need to replace head gasket
Post by verslagen1 on 01/03/08 at 15:23:08

Crotchrocket is cheap but their delivery is slow.

But maybe cause I order in quantity.   ;D

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/03/08 at 22:35:20


2B382F2E313C3A38336C5D0 wrote:
Crotchrocket is cheap but their delivery is slow.

But maybe cause I order in quantity.   ;D

You order a lot of chain tensioners I bet....

I would have mentioned Ron Ayers but they have to be the slowest of all.  I believe that BikeBandit ships Priority Mail whereas Ron Ayers uses the Great Circle route :P

We go through this all the time.  Everyone thinks they have the best or the fastest, and it just boils down to each individual part and the shipping anyway.  Might save a couple bucks overall by checking all of them...

...or you can burn the gas for 2 trips to the dealership and talk to idiots  8-)

Title: Re: need to replace head gasket
Post by verslagen1 on 01/03/08 at 22:48:36

As fast as USPS has been lately, I'm sure they order direct from Japan, ship via ground.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/03/08 at 22:56:35


140710110E0305070C53620 wrote:
As fast as USPS has been lately, I'm sure they order direct from Japan, ship via ground.

Actually, I do like USPS.  First class on all my CDs is usually no more than 3 days delivery US.

As for BikeBandit, my last order arrived Priority in 3 days.  Ron Ayers can take as long as 9 days...they order from Japan, I think :P

Motorcycle Superstore is also fast but they don't do OEM parts

Title: Re: need to replace head gasket
Post by nervekiler on 01/03/08 at 22:59:48

thanks guys i just placed my order with bike bandit 11pm 1/3/08 guess we will see how long it takes. i chose standard cheap shipping

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/03/08 at 23:10:56

BTW - Isn't there a topic about Vendors in the Tech Section?

Can't remember...:P

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/03/08 at 23:11:43


2A213632212F2D282136440 wrote:
thanks guys i just placed my order with bike bandit 11pm 1/3/08 guess we will see how long it takes. i chose standard cheap shipping

Well, this will be a first.  I don't remember anyone actually witnessing a blown head gasket.  How old is the bike?

Title: Re: need to replace head gasket
Post by T Mack 1 on 01/04/08 at 10:04:46


4C796E6C543D3E3B0B0 wrote:
Well, this will be a first.  I don't remember anyone actually witnessing a blown head gasket.  How old is the bike?


So...what causes the head gasket to blow ?  

1) I thought it was a loose head, in other words, bolts not torqued enough..........
2) Or, improper assembly, which could be  related to #1 above.  But,  having done a head myself, the gasket part of the rebuild is rather simple so this one would be minor reason.
 


The used head I bought at the local salvage yard came from a bike that the guy said the bolts were just over a "finger tight" torque.  
Makes you wonder if that is why the bike was in the yard (blown head?), and also makes you wonder how many dealers "total" a bike for a blown head.  Note: I think the Dealer labor charges make the idea of totalling an "easy fix" a reality on the older Savages.  

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/04/08 at 11:42:24

"Why?" is the next logical question, for sure.

Title: Re: need to replace head gasket
Post by nervekiler on 01/04/08 at 12:06:58

the speedo on the bike says less than 1500 miles... but no telling if its the original tank and speedo.. i can tell its been repainted.

not sure why it blew but noticed a few signs of a small leak .. small puffs of smoke coming out near where the exhuast and head meet.
warming it up one day and it made a big puff and then died. wont start anymore.

im excited to start riding again.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/05/08 at 08:13:52


7B706763707E7C797067150 wrote:
the speedo on the bike says less than 1500 miles... but no telling if its the original tank and speedo.. i can tell its been repainted.

not sure why it blew but noticed a few signs of a small leak .. small puffs of smoke coming out near where the exhuast and head meet.
warming it up one day and it made a big puff and then died. wont start anymore.

im excited to start riding again.

WELL, of course, the first and easiest way to check for a blown gasket would be a compression check, ya know.

Just have to remember to disable the decompression solenoid...

Title: Re: need to replace head gasket
Post by T Mack 1 on 01/05/08 at 19:19:42

The guy at the salvage yard said on the LS650 you got to make sure you're getting oil to the head after re-assembly before riding.  He said to loosen the one head cover bolt that passes thru the oil passage.  Crank and make sure you get oil out.

So....here's a funny. ;D When I put the engine back together, I kept the bolt loose like I was told to do.  Took the spark plug out so there was no compression  (no load) on the engine and then cranked it over for the first time.    I watch for oil coming out of the bolt..... nothing......crank again ...... nothing.  I thought., D..mn, I must have got sealant in the oil passages.    So, one more try, this time with the bolt all the way out.   Crank crank........ splash....oil all over my face & safety glasses  :o .    Slipped the bolt back in loosely and cranked and oil again......Yea....

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/06/08 at 06:51:42


532A4A66646C36070 wrote:
The guy at the salvage yard said on the LS650 you got to make sure you're getting oil to the head after re-assembly before riding.  He said to loosen the one head cover bolt that passes thru the oil passage.  Crank and make sure you get oil out.

So....here's a funny. ;D When I put the engine back together, I kept the bolt loose like I was told to do.  Took the spark plug out so there was no compression  (no load) on the engine and then cranked it over for the first time.    I watch for oil coming out of the bolt..... nothing......crank again ...... nothing.  I thought., D..mn, I must have got sealant in the oil passages.    So, one more try, this time with the bolt all the way out.   Crank crank........ splash....oil all over my face & safety glasses  :o .    Slipped the bolt back in loosely and cranked and oil again......Yea....

That's actually a very good point.  Some bikes have a bleeder for doing that, but while your cranking it, what's lubing the cam shaft?  A good idea is to use an assembly grease on the top end parts, so there is lube before the oil gets up there.

Note to self:  Don't look in spark plug OR bolt hole when cranking engine :P

Title: Re: need to replace head gasket
Post by justin_o_guy2 on 01/07/08 at 04:48:08


093C2B2911787B7E4E0 wrote:
[quote author=7B706763707E7C797067150 link=1197689577/15#22 date=1199477218]anymore.

im excited to start riding again.

WELL, of course, the first and easiest way to check for a blown gasket would be a compression check, ya know.

Just have to remember to disable the decompression solenoid...[/quote]



Wuhhh? I thought the decomp dropped out after something like 2 seconds, just long enough of decomp to let the starter get everything swinging good. Is this not so?

Title: Re: need to replace head gasket
Post by Kropatchek on 01/07/08 at 07:35:04


7C6365627F7849794971636F24160 wrote:
[quote author=093C2B2911787B7E4E0 link=1197689577/15#23 date=1199549632][quote author=7B706763707E7C797067150 link=1197689577/15#22 date=1199477218]anymore.

im excited to start riding again.

WELL, of course, the first and easiest way to check for a blown gasket would be a compression check, ya know.

Just have to remember to disable the decompression solenoid...[/quote]



Wuhhh? I thought the decomp dropped out after something like 2 seconds, just long enough of decomp to let the starter get everything swinging good. Is this not so? [/quote]

That's right, the decompression solenoid is de-energized 0.7 seconds after the startbutton is pushed in.( source the SSM)

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/07/08 at 08:17:30


697670776A6D5C6C5C64767A31030 wrote:
[quote author=093C2B2911787B7E4E0 link=1197689577/15#23 date=1199549632][quote author=7B706763707E7C797067150 link=1197689577/15#22 date=1199477218]anymore.

im excited to start riding again.

WELL, of course, the first and easiest way to check for a blown gasket would be a compression check, ya know.

Just have to remember to disable the decompression solenoid...[/quote]



Wuhhh? I thought the decomp dropped out after something like 2 seconds, just long enough of decomp to let the starter get everything swinging good. Is this not so? [/quote]
Yeah, but you can't use it if you are doing a compression check.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/07/08 at 08:18:37


754C514E5F4A5D565B553E0 wrote:
[quote author=7C6365627F7849794971636F24160 link=1197689577/15#26 date=1199710088][quote author=093C2B2911787B7E4E0 link=1197689577/15#23 date=1199549632][quote author=7B706763707E7C797067150 link=1197689577/15#22 date=1199477218]anymore.

im excited to start riding again.

WELL, of course, the first and easiest way to check for a blown gasket would be a compression check, ya know.

Just have to remember to disable the decompression solenoid...[/quote]



Wuhhh? I thought the decomp dropped out after something like 2 seconds, just long enough of decomp to let the starter get everything swinging good. Is this not so? [/quote]

That's right, the decompression solenoid is de-energized 0.7 seconds after the startbutton is pushed in.( source the SSM)
[/quote]
Yes, as per the SSM.  Pretty quick.  Ya gotta watch it to appreciate.

Title: Re: need to replace head gasket
Post by T Mack 1 on 01/07/08 at 10:33:04


073225271F767570400 wrote:
That's actually a very good point.  Some bikes have a bleeder for doing that, but while your cranking it, what's lubing the cam shaft?  A good idea is to use an assembly grease on the top end parts, so there is lube before the oil gets up there.


Agree .... I used a good deal of oil on all internal parts when reassembling.  I've been told that they make the above mentioned assembly grease, but used oil.   I was told to stay away from "Petroleum Jelly" that you can get in the grocery/drug store.  I was told it does not breakdown/dissolve as fast as it needs to in modern engines.   The older engines with looser tolerances might have been ok, but the tight tolerances of newer engines need real oil fast.   And with the low oil pressure the LS650 has, the Petro Jelly will cause a restriction holding oil from going into the far away spots like the head.  ((Nature says most things follow the path of least resistance))

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/07/08 at 10:51:28

I have never thought to use Petroleum jelly for that...for me it seems the opposite might be true though.  I could be wrong, but it seems like Petroleum jelly has too low a melting point.  Look how easily it liquefies on your skin.  Seems that it wouldn't be a very good lubricant, anyway.  Not like Moly-B does.

I learned to keep petroleum jelly handy while a mechanic in the Navy.  Good for slipping o-rings in place.  A light coat of that makes a rubber intake slide on a carb very easily...especially if you have a bank of 4 that all slide together at once (like Smokin Blue's GSX-R in stock form).

But anyway, we agree that you have to worry about a "dry start" when doing engine work  ;)

Title: Re: need to replace head gasket
Post by justin_o_guy2 on 01/07/08 at 15:45:28

Greg, I don't unnerstand. Seems to me that the comp checker would get the "Full effect" the second or third time it hit compression, thus loading the comp checker to the value the cylinder provides. Why wont it work?

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/08/08 at 04:30:35


283731362B2C1D2D1D25373B70420 wrote:
Greg, I don't unnerstand. Seems to me that the comp checker would get the "Full effect" the second or third time it hit compression, thus loading the comp checker to the value the cylinder provides. Why wont it work?

Oh, I don't think so, but you bring up a good point.  

Now mind ya, I'm considering a kick start bike as my "most recent" use of a compression tester, but if you have the spark plug out of the cylinder and the engine doesn't start (while testing), does the decompression solenoid stay engaged?  Or is it still just a "0.7 second wonder"?

When I checked mine in October, I just took the cable off anyway...

I'll have to check the SSM, but it just seems that the decomp solenoid would stay ON and cause an incorrect compression reading....

Guess, that I hadn't thought about it like that.  Hmmmm ::)

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/08/08 at 05:06:38

Dam, you were right, and I was wrong.  I hate it when that happens...:P

When you push the starter button, this sequence happens.

1. Push start button
2. Decompression solenoid is ON.
3. After 0.2 seconds starter relay is ON
4. After 0.5 seconds decomp solenoid is OFF
5. The starter relay stays ON until you let go of the button

Total time for Decompression Solenoid ON is 0.7 seconds each time.  The starter will continue turning for a compression check.  Therefore, I didn't need to disconnect the cable.

DOH!   :o

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/08/08 at 05:18:51

That also means that if the decompression solenoid is on for only 0.7 seconds, it only helps you start the bike for about the first full cycle of the engine (1 or 2 revolutions).  So, if you have a problem with starting, and keep pressing the starter button, the decompression solenoid ain't doin' squat...

Of course, I never noticed that because my bike always starts immediately :P

Title: Re: need to replace head gasket
Post by justin_o_guy2 on 01/08/08 at 17:53:41

Well,, awwrite, it feels good that sometimes I wonder & it works out. NOW, I have an old comp checker, but no attachment that lets it screw into my bike plug hole. Paid good $$ for that thing, I think it's a Proto, but how can I get it to work on the bike?

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/08/08 at 22:05:49


0B141215080F3E0E3E06141853610 wrote:
Well,, awwrite, it feels good that sometimes I wonder & it works out. NOW, I have an old comp checker, but no attachment that lets it screw into my bike plug hole. Paid good $$ for that thing, I think it's a Proto, but how can I get it to work on the bike?

I assume it is the type of gauge that will retain the pressure reading and has a pressure relief....But what happened to the attachment?  You can get a complete set at Harbor Freight if you need, anyway.

Here's how you do it though...

Remove the left chrome head cover (raise tank if needed), then start engine and let it warm up.  Then remove the plug and screw the hose in...

Then crank the engine over while holding the throttle wide open (so that you don't create any intake vacuum) and turn the engine over until you get it as high as it will go.

Stop and read gauge.  If happy, put it all together.  If not happy, tear that puppy apart :P

Title: Re: need to replace head gasket
Post by justin_o_guy2 on 01/09/08 at 06:26:11

It's the parts I have probs with, no attachment to fit the plug threads. I'll check on Harbor Freight, sine we have one in town. Thanks for the "How To", I bet someone didn't know the steps.

Title: Re: need to replace head gasket
Post by SteveRocket1 on 01/09/08 at 09:01:10

Is there a way to test compression  with the engine on the bench?.  I have one out  I don't think the starter works on it. I am presuming that the engine has to move at a fair speed to get an accurate reading
Your advice please, my learned sages
Steve

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/09/08 at 09:44:45


5374657665526F636B6574000 wrote:
Is there a way to test compression  with the engine on the bench?.  I have one out  I don't think the starter works on it. I am presuming that the engine has to move at a fair speed to get an accurate reading
Your advice please, my learned sages
Steve

I don't know how you can test it on the bench with a compression tester.  For that you might use a leak down tester.  They're a good bit more expensive.

I suppose that a compression tester is usually used to find out if the engine needs to be on the bench, first.

Title: Re: need to replace head gasket
Post by nervekiler on 01/11/08 at 22:51:22

so i got the headgasket in the mail two days ago.

go back into my email to check my tracking numbers and it said my clymers manual was delivery failed on the 3rd and then they stopped trying... i never got a notice? hmm
gonna have to stop by post office next week to check.. hopefully they dont send it back. how long does the post office typically hold mail (like parcels.. packages.. like a  book)

might have a weekend project herecoming soon.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/12/08 at 08:35:59


3F342327343A383D3423510 wrote:
so i got the headgasket in the mail two days ago.

go back into my email to check my tracking numbers and it said my clymers manual was delivery failed on the 3rd and then they stopped trying... i never got a notice? hmm
gonna have to stop by post office next week to check.. hopefully they dont send it back. how long does the post office typically hold mail (like parcels.. packages.. like a  book)

might have a weekend project herecoming soon.


I hate to say it, but if you're in a real crunch, Pro Caliber might have a Clymer manual.  I know they have quite a few there at the parts counter.

Of course, if you bought my CD, you'd have had it 2 weeks ago http://i21.photobucket.com/albums/b277/gmdinusa/action-smiley-066.gif

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/23/08 at 07:12:57

Well, time to bring this topic back to the top...

This bike is now in my garage, and I'm gonna replace the head gasket.

Wish me luck :P

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/23/08 at 14:23:31


79726561727C7E7B7265170 wrote:
the speedo on the bike says less than 1500 miles... but no telling if its the original tank and speedo.. i can tell its been repainted.

not sure why it blew but noticed a few signs of a small leak .. small puffs of smoke coming out near where the exhuast and head meet.
warming it up one day and it made a big puff and then died. wont start anymore.

im excited to start riding again.


I got down to this point before lunch..."small puffs of smoke," you said?  Well, your exhaust gasket was leaking really bad...and on first look, it blew carbon all around the top of the head where you see the edge of the head gasket....hmmm

I've got your battery on a charger, and in a bit I'm gonna run a compression test...

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/23/08 at 15:19:16

Update...

SSM specs says 142 to 200 PSI with the engine hot so:

Compression test dry and cold = 180 PSI
Compression test wet (oil in cylinder) = 190 PSI

I also squirted WD40 around the head gasket and I see no bubbles or feel any leaks...hmmm

http://i21.photobucket.com/albums/b277/gmdinusa/Compression_Test_1.jpg

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/24/08 at 07:41:15

Due to the good compression results, it doesn't seem that a head gasket is bad.  I believe the poor engine performance and this exhaust leak are really just symptoms of another problem.

http://i21.photobucket.com/albums/b277/gmdinusa/Exhaust_Gasket_1.jpg

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/24/08 at 08:20:54

Now, the purpose of these photos is for a lesson to all on this forum.  I know that I've never seen anything like this either.  I'm definitely not posting these to give Nervkiler a hard time about this bike...because actually this 1997 is in great shape with only 1600 miles.  The chrome is excellent and it looks well kept for 11 years...but unfortunately, it looks like a previous owner did a little bit of tinkering on this bike.

When the bike came here, I noticed this muffler with the packing sticking out, as you see it.  It looks as if someone cut off the end, removed the guts, welded in a new baffle, and painted it.  They installed a pipe nipple in the end...and the packing was sticking out when I first saw it.

http://i21.photobucket.com/albums/b277/gmdinusa/Muffler_Modified_1.jpg

Then last night I decided to check this muffler.  The packing was packed hard against the muffler outlet (and that stuff will cut you too).  With further checking I decided to remove the packing.  What a job, but I got it out.

All this packing and carbon was all the way up in the pipe (which has no guts) and stuck hard against the outlet.  I think this is what caused the exhaust gasket leak that was confused with a bad head gasket.  The muffler was plugged.

Who could expect this kind of "time bomb" when buying a used bike?

http://i21.photobucket.com/albums/b277/gmdinusa/Muffler_Modified_2.jpg

The "Good News" is that I'm gonna take a chance and put this engine back together.  I don't think it needs a new head gasket.  I'll re-torque the head, seal the headcover and adjust the valves, and I'm betting the bike runs just fine.

Title: Re: need to replace head gasket
Post by Reelthing on 01/24/08 at 10:07:07

certainly from this vantage point stuffing the muffler full of steel wool seems like a moronic thing to do for several reasons - it would be interesting to know why it was done - perhaps just that - the muffler was gutted - that was too loud - so in went what was handy to make a glass pack sort of - just doesn't seem like the place for a flammable packing

Title: Re: need to replace head gasket
Post by nervekiler on 01/24/08 at 18:13:31

well im gonna cross my fingers just hoping the bike will get running soon.

guess itll be time very soon to replace the muffler... hopefully ill have the funding available soon.

funny on the chevy truck i traded for the bike.. had sort of the same thing, clogged cataletic convertor which i replaced prior to the trade.. hmmm


Title: Re: need to replace head gasket
Post by Max_Morley on 01/24/08 at 18:19:24

Actually it would have worked had the builder put a perforated pipe down the middle to keep the packing in place and center clear. Given the heat and pressure waves of our blessed Thumpers, it probably not lasted long but absorbed some of the sound. Max

Title: Re: need to replace head gasket
Post by Reelthing on 01/24/08 at 19:22:59

unless it had enough flow to maintain a burn of the material - might have set record backfire  :o

Title: Re: need to replace head gasket
Post by verslagen1 on 01/24/08 at 19:39:20


497E7E776F7372757C1B0 wrote:
just doesn't seem like the place for a flammable packing


does steel wool burn?

Title: Re: need to replace head gasket
Post by Max_Morley on 01/24/08 at 20:09:54

I'm sure if it is hot and has sufficient oxygen it will burn (oxidize) rapidly. Seems like we used to burn out smitty's glasspacs used in my misspent youth. I even remember some were sold as steel pacs and lasted a little longer. I found an old one and it lasted a couple years on my 1988 GMC PU, found another in the road to replace it. Had to throw cycle money at an old PU. Max

Title: Re: need to replace head gasket
Post by verslagen1 on 01/24/08 at 20:15:35

OK, I beleave steel wool fed into the combustion chamber of the shuttle and it'll burn.

But in the tail end of a savage, it'll just rust to death.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/24/08 at 20:40:26


3B302723303E3C393027550 wrote:
well im gonna cross my fingers just hoping the bike will get running soon.

guess itll be time very soon to replace the muffler... hopefully ill have the funding available soon.

funny on the chevy truck i traded for the bike.. had sort of the same thing, clogged cataletic convertor which i replaced prior to the trade.. hmmm

I had your bike running tonight.  All back together AND with a jump start (battery is really weak) she start right away.  That was with 1/2 choke.  She idles really smooth too.  It's only above idle that it starts acting up.

For starters, the bike needs to be rejetted and it does pop and backfire.  I saw the smoke puffing as you mentioned, but I am pretty certain that the exhaust gasket is leaking really bad.  That and the open exhaust is making it really lean (you noticed the bluing on the header, right?).  I checked the compression with the engine hot and the reading was 165 PSI this time.  Still in the range.

Oh yeah, the head nuts were really tight when I checked that...and the valves needed an adjustment.  They were a bit loose.  The top end looks really good and clean though.  I think we are the first ones to go in there in 11 years :P

I'll mess with it again tomorrow, but I'm sure it needs a new exhaust gasket.  If she finally turns out to not need a head gasket, the good news is that I do :P

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/24/08 at 20:44:12


1F332A0D1F3D203E372B520 wrote:
Actually it would have worked had the builder put a perforated pipe down the middle to keep the packing in place and center clear. Given the heat and pressure waves of our blessed Thumpers, it probably not lasted long but absorbed some of the sound. Max


That big wad of steel wool was packed hard at the outlet.  All the way down in the pipe.  It took me a long time poking with a pry bar to get it to the other end where I could start pulling it out.

It was none-the-less interesting :P

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/24/08 at 20:52:31


79554C6B795B4658514D340 wrote:
I'm sure if it is hot and has sufficient oxygen it will burn (oxidize) rapidly. Seems like we used to burn out smitty's glasspacs used in my misspent youth. I even remember some were sold as steel pacs and lasted a little longer. I found an old one and it lasted a couple years on my 1988 GMC PU, found another in the road to replace it. Had to throw cycle money at an old PU. Max

It seems to me that when I was searching for packing for my Raask, that I saw steel wool listed somewhere.  Maybe for dirt bike spark arrestors.  I don't know.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/24/08 at 20:54:47


0A3D3D342C3031363F580 wrote:
certainly from this vantage point stuffing the muffler full of steel wool seems like a moronic thing to do for several reasons - it would be interesting to know why it was done - perhaps just that - the muffler was gutted - that was too loud - so in went what was handy to make a glass pack sort of - just doesn't seem like the place for a flammable packing

I will admit that the pipe really has a decent tone.  It is loud (NOW for sure) but it sort of growls  8-)

Title: Re: need to replace head gasket
Post by Reelthing on 01/25/08 at 04:58:51


485B4C4D525F595B500F3E0 wrote:
OK, I beleave steel wool fed into the combustion chamber of the shuttle and it'll burn.

But in the tail end of a savage, it'll just rust to death.

doesn't take quit that much - just grab a wad and put a lighter to it or use a 9-volt battery

but for a really good time ....

http://dangerouslyfun.com/fire-wire

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/26/08 at 13:58:56

Update...cleaned most of the carbon off the head, cleaned the exhaust port and gasket, and prepared for another test...

Then since one of the exhaust bolts had been replaced with a stud and acorn nut, I used a regular nut to mount the header really tight against the head...because I wondered if the acorn nut was bottoming out on the stud and preventing the flange from being tightened well enough (since acorn nuts don't have a hole all the way through)

Then I started the bike and rolled it out into the 30 degree weather and rain.  I put a little fan in front of the engine to keep it from getting too hot, and threw a plastic cover over the seat.  There, I let the bike warm up and run.

It popped and backfired a few times before it got hot...and the bike sat out there running for 45 minutes...yes, 45 minutes!  From time to time I'd go over and open the throttle and wind it up.

Not one leak around the head gasket area that I can see.  Nothing blowing out, and when she cools off, I'll pull the pipe and look closer.

I think this bike is now ready for the mixture screw to be opened up, a 1/2 spacer, and a 150 main jet.  I don't know if I have another pilot jet to put in there...she's running a little lean though.

This has been a good work day!  8-)

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/28/08 at 11:24:29

Here we go.  She needed a jump because of a weak battery, but here is Nervkiler's Savage running in the snow (you can't see it too well).

Since the pipe is opened up, I did the "1/2 spacer mod" and drilled out his idle mixture screw.  After she warmed up, I adjusted the idle mix.  Unfortunately, I don't have a 150 main jet, but that won't be too hard to change since I've loosen up those "virgin" bowl screws.  They were tight...

There was a little bit of residue in the carb.  Luckily most of the gas had been drained because the jets were fine.

http://i21.photobucket.com/albums/b277/gmdinusa/Carb_Deposits_2.jpg

And here is Nervkiler's Thumper :)

http://i21.photobucket.com/albums/b277/gmdinusa/1997_FTurner_1.jpg

Title: Re: need to replace head gasket
Post by demin on 01/28/08 at 13:26:55

Other than the muffler that's a clean bike.If you keep the muffler paint it black,that wouldn't look too bad.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/28/08 at 19:47:37


29282024234D0 wrote:
Other than the muffler that's a clean bike.If you keep the muffler paint it black,that wouldn't look too bad.

Yes, it really is clean...just a few places that were messed with by the PO, and that is a good thing.

It may look kinda funky, but the pipe does have an interesting sound with the way it was modified.  As Max said if they had put a core through the middle (with holes) the packing might have worked.

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/30/08 at 13:18:09

Guess that we'll just wait to see Nervkiler put an official "The End" on this topic...

...he left on his bike about an hour ago.  My phone hasn't rung yet, so I guess it is still running :P

Title: Re: need to replace head gasket
Post by demin on 01/30/08 at 13:20:14

That's always a good thing. :)

Title: Re: need to replace head gasket
Post by Reelthing on 01/30/08 at 18:21:51


0035222018717277470 wrote:
Guess that we'll just wait to see Nervkiler put an official "The End" on this topic...

...he left on his bike about an hour ago.  My phone hasn't rung yet, so I guess it is still running :P

may have got lost on the way home - it happens!

Title: Re: need to replace head gasket
Post by nervekiler on 01/30/08 at 20:07:57

haha no we got lost on the way out to his house.. not a hard place to find but we thought we could do some backroads.. ended up in camas

bike runs great. lots more low end grunt to her and it sounds awsome. i kept thinking is this too loud? haha no loud pipes save lives.
dont think ill ever get pulled over with it like this it just sounds good.

next project with the bike after i get a new battery and change the oil is going to be 155 main jet and then probably a chain conversion. sidemount liscense plate and brake light. then ill fit a bobber style fender and seat. maybe new bars to follow. ill try to keep the list as short as that for the summer.

love to bike just waiting for the weather to warm up.
greg told me it would happen.. when i got home my fingers were FREEZING! took almost 15 minutes for the feeling to come back completely.

:)
thanks

Title: Re: need to replace head gasket
Post by Savage_Greg on 01/30/08 at 22:13:57

Well, at least you didn't have to chisel your hands off the grips :)

I don't recommend a 155 main unless you get a more open header (not the muffler).  You'll just be blowing the extra gas out the pipe and dirtying your plug.  I suggest a 150, but since they are cheap, just get one of each; 150, 152.5, and 155.  Then you'll have them for the future, anyway.

Thanks, I enjoyed working on your scoot.

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