SuzukiSavage.com - PISTON NOISE

MMRanch Serious Thumper Offline Evil flourishes if Good Men do Nothing. Posts: 5835 LYNCHBURG TN Gender:	Re: PISTON NOISE Reply #15 - 08/31/09 at 18:46:20 If all else fails I'm "Going for the rice krispies"
Back to top	I see and feel the Holy Spirit in the world , as does anybody who has eyes to see. IP Logged

Boule’tard Serious Thumper ModSquad Offline Master of the Obvious Posts: 1620 Austin TX Gender:	Re: PISTON NOISE Reply #16 - 08/31/09 at 22:56:33 Careful, your bike will turn into a rice burner.. HUH HUh huh ..oh.
Back to top	That which can be destroyed by the truth should be. - P.C. Hodgell IP Logged

justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: PISTON NOISE Reply #17 - 08/31/09 at 22:58:00 It wasnt at an idle when they started feeding it the rice, it was rapped up tight enough to have been making 60 or so.
Back to top	The people never give up their liberties but under some delusion.- Edmund Burke. IP Logged

Boule’tard Serious Thumper ModSquad Offline Master of the Obvious Posts: 1620 Austin TX Gender:	Re: PISTON NOISE Reply #18 - 08/31/09 at 23:05:51 Oh, a rice ROCKET, I got it Reminds me of that dude (or joke about the dude) that fed sand into the airbox of his BMW to "port the heads."
Back to top	That which can be destroyed by the truth should be. - P.C. Hodgell IP Logged

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: PISTON NOISE Reply #19 - 09/01/09 at 09:04:14 So do you need an open exhaust for the rice trick? Or do you smell burnt rice till they're gone?
Back to top	Versey's Place Tech Section Index IP Logged

T Mack 1 - FSO

Serious Thumper
Alliance Member

Offline

sold 2001 LS650 for
a 1986 XLH1100

Posts: 2919
Emmaus,Pa
Gender: male

Re: PISTON NOISE
Reply #20 - 09/01/09 at 09:24:26

Phelonius wrote on 08/31/09 at 10:19:13:

MMRanch wrote on 08/30/09 at 20:13:31:

Thanks for all the ideas .

Anybody know what burnt valves sound like ?

I've taken it apart and nothing looks or feel loose or scared, I'm seating the valves while its down, the seats look black (notice no capital lettler.....ha! )

Do a compression test. That will expose burnt valves.

Phelonius

Compression check will also show rings on their last legs.

And.... the Melted Piston syndrome. Which I am told would be a loud knocking noise.
Sad

Back to top

Engineers design things, Technicians make them work.
---
30% of being mechanical is confidence/30% is knowing to go slow when needed/30% is looking repeatedly at what you have/10% is dumb luck Wink

IP Logged

Stimpy - FSO

Serious Thumper

Offline

SuzukisSavage Int'l
Division

Posts: 1203
Germany - formerly SD, SoCal
Gender: male

Re: PISTON NOISE
Reply #21 - 09/01/09 at 10:12:48

1) a flashlight, a small mirror and some ingenuity
might help you to determine if your piston is cracked
by physically looking at it through the sparkplug hole.
_{(...and if you can get your hands on a miniature "snake-cam
w/light" you are done! mechanics and doctors use those)}

2) might help you to take a look at my recent engine rebuild
thread w/ many findings and photos mainly regarding burnt
exhaust valves and new ring install on an old piston

Here: http://suzukisavage.com/cgi-bin/YaBB.pl?num=1246924611/0

Good luck
RP

Back to top

Recently sold 97'savage (change of residence) - looking to buy another - just bought a temp, a great SR125 called 'methadone'

IP Logged

Routy

Serious Thumper

Offline

SuzukiSavage.com
Rocks!

Posts: 2280
Winston Oregon
Gender: male

Re: PISTON NOISE
Reply #22 - 09/02/09 at 07:51:09

If its running good, it doesn't have any burnt valves.
If it has piston slap, you won't find it w/o checking the clearance tween the piston skirt and cyl wall.
If the piston is cracked, it is most common to be in the wrist pin/skirt area, which would be very hard to see thru the SP hole.

Plain water thru the air intake, along w/ WOT is commonly used to rid piston/combustion chamber of carbon.

If you do not have noise on cold startup, and at idle, I would not suspect any part of the piston to be at fault.

Rich

Back to top

Rich
'07 S40 Blvd stocker, except drilled OEM exhaust and white spacer mod...1/2 (.055)

IP Logged

justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: PISTON NOISE Reply #23 - 09/02/09 at 09:43:30 Good points all, Routy. Be much easier to feed it H2O than rice. Would you want to do an oil change after that?
Back to top	The people never give up their liberties but under some delusion.- Edmund Burke. IP Logged

Routy Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2280 Winston Oregon Gender:	Re: PISTON NOISE Reply #24 - 09/02/09 at 21:22:06 I and other mechs did it many times in the auto shops. We never saw any noticeable water get into crankcases, but an oil change can't hurt. Rich
Back to top	Rich '07 S40 Blvd stocker, except drilled OEM exhaust and white spacer mod...1/2 (.055) IP Logged