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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Cam Shaft Porosity /cgi-bin/YaBB.pl?num=1171949438 Message started by Greg_650 on 02/19/07 at 21:30:38 |
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Title: Cam Shaft Porosity Post by Greg_650 on 02/19/07 at 21:30:38 So how do your like you cam shaft lobes? I thought that I'd take a photo of this while I have it out. I saw this over 3 years ago when we lived in NC. I had less than 10K on the bike then. I put it back in to see what might happen (besides, we were going to a rally, anyway) http://i21.photobucket.com/albums/b277/gmdinusa/CamWear_1606.jpg It really has not changed much. http://i21.photobucket.com/albums/b277/gmdinusa/CamLobe_1606.jpg |
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Title: Re: Cam Shaft Porosity Post by LANCER on 02/20/07 at 05:30:15 Those are some pretty big pits, and a lot of them too. That may not harm anything in the immediate future but it will sure wear a heck of lot faster. I was having difficulty seeing the lobe ... it looks to be off the side of the lob ... but is it on the up or down side of the lob? The up side will get more wear I would think. The closeup pic just came into focus. That is some freaking poor metal work. I need to pull mine and get a really good look to see how it is holding up. Webcams, Inc did the regrind several years back but I only have put about 6-7k on it since. They do offer a HARD WELD option but it costs about double of the standard cam regrind. ** As a note, it looks like I may be an authorized dealer for Webcam Inc this year, and if so then the price for a performance cam for the Savage can come down a significant amount. |
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Title: Re: Cam Shaft Porosity Post by Max_Morley on 02/20/07 at 09:27:26 Looks to me like it is on the heel of the cam and if so, the valve spring pressure has dropped off at this point if the clearance is there so IMHO no reason for concern, unless the valve adjustment were to get tight. But I believe if that happened, the performance would be down to the point you would be looking into the reason. It the rocker should be floating on a good film of oil at that point. Max |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 02/20/07 at 09:56:59 Max_Morley wrote:
Oh, you don't know how I'd like to think that way. Unfortunately those pits are on top of the lobe. If you look at my signature line, it is the lobe pointing to the right. So, it is actually under full pressure at that point :( |
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Title: Re: Cam Shaft Porosity Post by bentwheel on 02/20/07 at 11:39:12 What do your rocker arm pads look like? Are they pitted or flatspotted? |
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Title: Re: Cam Shaft Porosity Post by LANCER on 02/20/07 at 13:32:28 Greg_650 wrote:
Ooooo, not good dude. |
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Title: Re: Cam Shaft Porosity Post by barry68v10 on 02/20/07 at 14:13:08 That build quality is certainly lacking! Is that the stock cam that came from Suzuki?!? |
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Title: Re: Cam Shaft Porosity Post by justin_o_guy on 02/20/07 at 14:21:58 Whart part of the cam profile is that? Is it like that in the lift area? |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 02/20/07 at 15:35:23 bentwheel wrote:
Written earlier... Nope. They look just fine. Like I said, I noticed this a few K miles ago. I had just about forgotten it until I pulled the cam last night. It has grown only a little bit since then. But you made me realize that I really didn't look too closely... :P Well, now, I'll change my story a bit. There is some rocker wear. I just didn't really notice it. I was mainly looking at the cam. It isn't really a flat spot. There is a contact area of wear, and the beginning and end appear to have a small groove. You can feel it with your fingernail. And guess what...I can't seem to find any specs on the rocker pads in the SSM. http://i21.photobucket.com/albums/b277/gmdinusa/ExhaustRocker_1629.jpg |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 02/20/07 at 15:37:22 LANCER wrote:
I think I'll have to check your WebCam idea. Stay tuned :) |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 02/20/07 at 15:42:36 barry68v10 wrote:
Neat eh? Yep. It's stock with 14K on it. I posted it because I have never seen that on any cam. I've seen porosity in other stock metals, but I'm really surprised with this. I'm surprised that it made it from the grinder to QA before the engine was built. |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 02/20/07 at 15:45:35 justin_o_guy wrote:
Yep. On the top of the lobe. It really hasn't changed much in 5K or so miles too. I suppose that I could look at it like any area to hold a little extra oil lube :) |
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Title: Re: Cam Shaft Porosity Post by K1200LTryder on 04/13/07 at 12:10:44 Just cruising the forum and came across this, I used to work in a machine shop that rebuilt engines, including custom cam grinding...that cam in the pic is totally shot. That isnt porousity, it's galling. As for the rocker pads, you may be able to get them touched up, but only at a machine shop. The cause of the cam failure is usually lack of oil,(or to thin oil) and extreme heat. |
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Title: Re: Cam Shaft Porosity Post by K1200LTryder on 04/13/07 at 12:12:15 ...forgot, most important, too tight valve clearance. |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 04/14/07 at 09:13:29 Good input... I did machine work for over 12 years, so I've seem galling. I've done turning, grinding, etc. but admittedly it wasn't automotive. Anyway, I thought that too at first. And as much as I'd like to think that QA at Suzuki would catch such stuff, I really do think it is porosity. Reasons are... - I am a stickler about valve clearances. Range is .003 -.005". I always shoot for .004-.005" and always double check. - Oil levels, qualities, and quantities have never been neglected or overlooked. If nothing else, I'm one of the few that trusts Suzuki blends (THAT'S GOTTA BE IT!) - The rocker arms have wear and flats, but no where can I find the obvious result of galling which usually means the transfer of metal material from one piece to the other. - those are definitely pits in the cam shaft material. Interestingly, it is on both lobes too. Which in my thinking (warped as it is) is basically the same radial distance from center. I think the stock camshaft material was bad. It went to grinding, came shooting out of the CNC, got missed in inspection and ended up in my scoot. (In my last job, QA had limits on "allowable" porosity in some of our cast materials...) But, just on the possibility you suggest, I'll use the looser .005" adjustment when I get the new cam....especially for the bucks I'm gonna invest in it. Thanks for your counter-point... |
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Title: Re: Cam Shaft Porosity Post by Reelthing on 04/14/07 at 10:25:59 try some motorcycle spec syn oil in the beast - lord I'm trying to make yet another oil thread - oh yeah use 93 octane - there that should just about screw up any thread. |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 04/14/07 at 10:29:06 You forgot to mention higher tire pressure and loctite.... I've been HIJACKED!!!! Ahhhh!!!!!!!!!!!!!!!!!!!! |
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Title: Re: Cam Shaft Porosity Post by barry68v10 on 04/14/07 at 20:42:26 YEAH, and a petc0ck conversion! Greg, the problem with your cam is you haven't converted your petc0ck yet :o |
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Title: Re: Cam Shaft Porosity Post by verslagen1 on 04/14/07 at 21:22:22 no, no... he need 93 octane ;D |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 04/14/07 at 21:59:31 Gee...I disappeared for a couple hours to finish my tax returns and all of a sudden it's a feeding frenzy in here.... Or is this just a scene out of Shark Tales? ;D |
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Title: Re: Cam Shaft Porosity Post by jjn on 04/15/07 at 11:24:32 I worked on diesel (and gas) freight trucks for many years and have seen many camshafts that looked like that. I've seen them badly pitted, and with large depressions worn on them just before the lobe.The difference is it usually took many hundreds of thousands of mile before they started looking like yours.We would consider them junk and replace them. We wouldn't have regrinds because they never seemed to last as long as an OEM cam would. Jon |
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Title: Re: Cam Shaft Porosity Post by Trippah on 04/15/07 at 15:13:35 Interesting that you left the thread unattended to do taxes..now its a double shafted thread. ;D |
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Title: Re: Cam Shaft Porosity Post by Dynobob on 04/15/07 at 16:02:04 When I look at the pic I think galling too. Cams break in during the first 30 minutes of runtime so maybe Suzuki was a little too sparse on the break in lube. You need to coat a new cam's lobes with special moly break-in lube designed for that purpose. I'll wait till the last minute to do my taxes ... as usual ;D They're due on the 17th at midnight. |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 04/16/07 at 10:37:47 Dynobob wrote:
I disagree, but oh well, I could be wrong too. Never saw cam lobes like this before. Gonna get Lancer's hard chrome regrind job this time. As for lube, I used engine assembly grease when I first pulled the headcover, however, unless you wipe all the oil out of the head, there is always a little reservoir of oil under the cam lobes anyway. They get lubed on the first rotation. Yeah...I bought Turbo Tax on Friday. Finished taxes on Saturday. Just waiting for refunds now :P |
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Title: Re: Cam Shaft Porosity Post by bentwheel on 04/16/07 at 13:11:42 Greg_650 wrote:
I have come up with an idea since I reread your post about damage at full pressure. What about coil binding? I realize this supports the galling theory, and prevails more in recent rebuilds, but maybe your valve springs are out of reserve. When you reassemble your motor (especially with a new cam) you can test for this. I don't know what Suzuki specs are, but NASCAR motor builders go with 0.100". Probably 0.050" is fine for our motors. You haven't changed your valve seats have you? Sometimes new valve seats raises the valve crown up and shortens the spring travel. |
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Title: Re: Cam Shaft Porosity Post by Greg_650 on 04/17/07 at 00:03:37 bentwheel wrote:
Well, no. Haven't done any of that. Everything is still stock. This certainly is an interesting issue though and will get lots of scrutiny at reassembly time. Thanks for more think... |
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Title: Re: Cam Shaft Porosity Post by LANCER on 04/17/07 at 03:32:43 Greg_650 wrote:
Taxes ?? What taxes ? Filed what ? What is a refund ? What is this strange language you are speaking? |
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Title: Re: Cam Shaft Porosity Post by Rockin_John on 04/17/07 at 09:56:44 LANCER wrote:
Go back to sleep and do not worry yourself about such things. Taxes are for a poor unfortunate section of socity that performs menial duties refered to as "work." To add insult to their punishment, they are then made to pay tribute money to the government for the privlege of working. I'm not certain, but I think the whole scheme is a punishment for some past transgression(s) as it turns out that working is a lot like being in he!!. I know this all too well, as I worked for very evil companies, and paid much tribute for many decades before deciding that I would rather freeze or starve than submit to further torment at the hands of the evil ones. For now, at very high personal cost, I have escaped thier bonds. And now I run FREE like the wind on my faithful comanion vehicle "Ox" which was forged specifically to allow me to enjoy this thing called freedom!!! 8) 8) NOTE: The above is not intended to insult anyone. It is parody. This information is for those who may not know what parody is... Here's a hint: It isn't a little green and yellow bird hanging in the pet shop window! ;D ;) |
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Title: Re: Cam Shaft Porosity Post by barry68v10 on 04/17/07 at 18:37:24 Quote:
I thought that was the length of the federal tax extension... ??? |
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Title: Re: Cam Shaft Porosity Post by LANCER on 04/17/07 at 20:04:06 I too was once bound by the chains of THEM. I now fly under the ever-searching radar forging my own trail and breathing the free air of ... .... ..... whatever it was I just forgot. |
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Title: Re: Cam Shaft Porosity Post by Rockin_John on 04/18/07 at 11:41:11 Greg_650 wrote:
I know that feeling... I worked for 16 years at a company that had frequent layoffs. Some were so long that the unemployement checks would run out. Sometimes I worked as a state licensed Journeyman HVAC tech, or took other jobs. But other times, my only income was $50-$150 a week from my part-time (weekend warrior) job as guitar slinger for rock, blues, and country bands. During those rare periods in my 26 year marriage, my wife was the main breadwinner, and I considered myself a "kept musician." Often I had motorcycle(s) during those times, so I guess I also qualified as a "kept biker." Anytime I look back through the years like that, my standard comment is; that my dear wife is only one miricle away from sainthood! ;) Savage content: Porosity or Galling... regardless of which, IMHO next time you've got that cam out, I highly recommend you toss it and get another. It is a roadside stranding, or even a serious engine accident waiting to happen! |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 08/13/07 at 21:53:29 After months of saving my pennies, I just got my new (reground) camshaft back from Lancer and his "Web Cam" connection. It looks mighty pretty too. As the note inside the box said, "Power in a Box". The whole experience was excellent. How long did it take? I think that I sent Lancer my cam about 3 weeks ago. Not a bad turn around time. Packaging was great too. Thanks Lancer! The first thing that I did was rub on it with lots of fresh clean oil....it likes it, I can tell. I can't wait to thump again! Oh yes, I almost forgot....You get some free Web Cam stickers too :D |
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Title: Re: Cam Shaft Porosity Post by LANCER on 08/14/07 at 06:56:38 There's nothing prettier than a finely machined piece of metal...especially if it is for a Savage engine. ;D |
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Title: Re: Cam Shaft Porosity Post by srinath on 08/14/07 at 20:17:27 Ok, never saw this old thread till now. But at 8K miles my 89 GS 500 came with a crows foot scratch on the right intake cam. I never opened it till 15K ... and saw it then, but I bought it with 8K in 1995. I rode it almost 15K+ a year for ~2 years, then a lot less on an average per year but ridden hard none the less (I had 5-10 bikes on average from 97 though 2005) till 2005 when it had 48K miles. I sold it, and the scratch barely was starting to get less deep (as in around it the cam was wearing. I can only imagine, a divot will take in oil and that oil will keep it cooled and lubed to where it wears less. Just a thought. Cool. Srinath. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 08/16/07 at 04:39:59 srinath wrote:
Sure. That thought passed my mind too. I blame this damage on porosity and bad QA somewhere in the manufacturing process myself. The oil would reside in the little divots, as you say, but were it not for flats on the rockers I might have just done the same....and not having other rockers for comparison, I decided to ere on the side of caution. But what the heck, I really wanted Lancer's cam regrind anyway :P The photo for this topic is on the CD. I'm getting ready to do a comparison photo of the new Hard Krome camshaft too. |
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Title: Re: Cam Shaft Porosity Post by LANCER on 08/16/07 at 08:01:14 http://render2.snapfish.com/render2/is=Yup6lQQ%7C%3Dup6RKKt%3AxxrKUp7BHD7Kofrj%3DQofrj7t%3DzrRfDUX%3AeQaQxg%3Dr%3F87KR6xqpxQQQaxJQexJlGxv8uOc5xQQQ0GP0QGGe0JqpfVtB%3F*KUp7BHSHqqy7XH6gXPlJ%7CRup6aQQ%7C/of=50,332,442 |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 08/16/07 at 08:09:39 As for the rockers, I just saw photos of another set of rockers. They looked like my old ones. Anyone know what is actually "good or bad" in rocker arm wear? |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 08/18/07 at 06:23:48 Now I just gotta figure out where to put some stickers :P http://i21.photobucket.com/albums/b277/gmdinusa/Cam_Performance_1.jpg |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/09/07 at 08:24:00 Ain't they purdy? Brandy dam new from Ron Ayers. Anyway, with the flowed exhaust port, polished head, Lancer's Web Cam, and these new rockers, my Thumper is gonna finally come back to life this week. The moment of truth is just about here.... Keep yer ears open for either strong seismic tremors or one loud bang in Washington State. Sumpin' is fixin' to happen :P http://i21.photobucket.com/albums/b277/gmdinusa/Valve_Rockers.jpg |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/10/07 at 13:06:14 After months of disassembly for photography, around $500 in new parts, a bunch of discussion about cam chains, and the final engine assembly yesterday, I just came in from the garage to give an update on my Thumper's progress. As I walked upstairs to my study, I contemplated many different ways that I could explain the results of all this work. I wasn't sure if I should just make a simple statement or a more in depth explanation. However as I sat down it came to me... The Dam Thing Started Right Up! It Really Runs Smooth and Sounds Strong Too! Time for a Test Ride... |
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Title: Re: Cam Shaft Porosity Post by verslagen1 on 09/10/07 at 13:14:12 Sounds to me that you sat down in the wrong place! |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/11/07 at 04:50:46 verslagen1 wrote:
I realized that after I wrote... So I went down to the garage, took my spouse's tag off her bike, and went for a good spin... That cam really does boost the bottom and mid range. I really can't even tell that I did the chain conversion and lowered the ratio. Throttle response is much improved. |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/11/07 at 07:43:28 Quote:
Oh yea, I am hearing music just floating through the air...makes you feel all warm and fuzzy inside ..... ;D |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/11/07 at 08:44:27 LANCER wrote:
I haven't had enough time riding it to decide just how much was contributed by each of the changes made. The Web Cam is obvious. Throttle response is really crisp. But with the head polished and all that exhaust port metal removed...I'm definitely making better use of the Raask pipe, now (which I repacked last week). It was impressive...:P |
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Title: Re: Cam Shaft Porosity Post by Rockin_John on 09/12/07 at 00:34:46 Glad to hear it's all coming together well, and that you are happy with the results so far. Three cheers to you getting a good long run out of your build! What with the extent of all the mods you did, it's kind of too bad it would be impractical, and too expensive, to reassemble and dyno the bike about 14 different times to quantify which individual part(s); or combinations of changes contributed exactly which improvements. You're still on the stock, but re-jetted, Mikuni aren't you? You must be tempted to spend the bucks to get it dyno charted after a good break-in and final adjustments? I'd just be itching to know what the charted curves would look like on it compared to the few others that have been posted. Mostly my curiosity about the porting... Good work, and good luck with it! 8) |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/12/07 at 04:46:49 Rockin_John wrote:
Thanks. After all this time that when finally riding, I completely forgot the one change That I was most curious about. The chain conversion.... Dropping from 2.96 to 2.64 really had me wondering what would happen to the bottom end torque, but that was forgotten until I found myself doing 30 in a 20 MPH school zone. Then I thought, "what's that correction factor?" With the Raask exhaust, I couldn't hear the chain anyway :P |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/12/07 at 05:32:27 I am ending up having to do a chain conversion on mine. The sportster mag wheels I am prepping for it made it necessary to go to the chain since the belt pulley's for the rear wheel have a different tooth shap to them and the Savage belt will not work with them. Fortunately the #530 chain will work on both the Suzuki front sprocket and the Harley rear sprocket. I just found an o-ring chain on ebay for $68 and am shopping for the sprockets. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/12/07 at 09:03:40 LANCER wrote:
I doubt that you need a sprocket catalog, but I'm pretty happy with this one...everything fit perfect. http://www.jtsprockets.com/52.0.html?&L=0&sel_uid=4789&p= http://i21.photobucket.com/albums/b277/gmdinusa/Chain_Conversion_1.jpg Here's a thought...using some gasket maker goop :P http://i21.photobucket.com/albums/b277/gmdinusa/Chain_Master_Link_1.jpg |
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Title: Re: Cam Shaft Porosity Post by Rockin_John on 09/13/07 at 23:01:56 Savage_Greg wrote:
What is that... like an 11% down-gear? That is significant. Added to your engine mods, I would think the acceleration would be starting to get pretty snappy. On one of my quests for ideas, I came across the big I.D. of the Raask, and though "wow, the straight one would make a great header for a short muffler." Then I came back on here and searched around and figured out it wasn't an original idea. Seems there are a couple of you guys who thought of that one ahead of me. It figures... Hard to come up with something nobody has though of before. ;) |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/14/07 at 05:31:31 Rockin_John wrote:
Yeah, the Raask makes a pretty expensive header pipe, but with that freer flowing ID and the idea that you can "cut to length" to fit a muffler, it seems a possibility. Max is one of those that did that... I have the 60 MM Raask and the chrome finish is excellent too. It may be a little loud, but I still don't have to go far to find a big v-twin that is way louder. |
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Title: Re: Cam Shaft Porosity Post by fsmidt on 09/16/07 at 14:26:56 hi greg. can`t see youre pics anymore. http://i60.photobucket.com/albums/h5/fsmidt/slijtagenokkenas.jpg mine is pretty damaged too.(should i renew?) too tight valve clearance i think checked site of webcam but could not find cam for savage. p.s thank twice for youre brilliant photoCD. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/16/07 at 15:02:15 I haven't been back to page 1 in a while...sorta loses the whole thing without a photo doesn't it? Gotta fix that... Yeah, that looks alot like mine. Too tight on the clearance? Hmmm. I have wondered about that. In the past, I have been particularly fussy about adjusting the valves, and with a tolerance of .003-.005" I have always set it in the middle at .004". However, when I installed the new cam, decided to set it generously on .005" instead... The Web Cam site lists it as an LS650, I think, but save yourself the hassle and just order it from Lancer. I do recommend it. Quality is excellent, it works well, turn around time is quick, and you get a bunch of cool stickers too :P Thanks about the CD too. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/16/07 at 15:17:51 And, oh yeah...check your rocker arms. If there is a flat spot in the middle, order a new set from Bike Bandit or Ron Ayers. The instructions for the new cam suggest new rockers and that is just what I did... http://i21.photobucket.com/albums/b277/gmdinusa/Valve_Rockers_4618.jpg Now, what caused it? A few people have suggested reasons, but it really wasn't a tight valve clearance or low engine oil. Someone else said theirs was pitted, too. How come yours looks like mine? |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/16/07 at 16:28:03 I ordered myself a new set of rockers too, but after playing with the old ones I think they would have been ok to use. I worked on one of them a little bit and it seemed to polish out really well. I did not notice any chrome or other layer on the rocker surface so I thought it would be good to use again. I will save it for another head I have that MAY be rebuildable...it has a lot of damage from valve's flopping around the cylinder so ....... [b]***About the camshaft... the performance camshaft is not listed on the Webcams website or in their catalog. It is a custom designed cam/profile that I worked out with the tech guys at Webcam. The part number used when ordering the camshaft is a highly guarded secret that is under lock and key in a secret "safety deposit box" in a secret bank in a secret location. But don't tell anyone because it is a secret. It sort of works like having a patent or something....a secret patent. Sooooooooooooo, if you need a cam ......ehhhhhhhhhh........contact Lancer............errrrrrrrrrrr.........me.....................ho ho ho ;D |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/17/07 at 07:14:45 All Hail Lancer! :) ;D :P |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/17/07 at 08:42:11 That is interesting......hmmm..what is with that? |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/17/07 at 08:49:08 LANCER wrote:
I feel compelled to add that this entire post was all done in jest. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/17/07 at 09:56:15 LANCER wrote:
I feel compelled to agree, and I sure hope that we're not all having a "Case of the Mondays" ;D |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/17/07 at 10:09:42 LANCER wrote:
Isn't that the way they talked back in the days of those "Lancer" types? Knights of the Round Table? Lances? Guess I'll just go out to the garage, now... |
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Title: Re: Cam Shaft Porosity Post by fsmidt on 09/17/07 at 16:00:32 hi lancer, you know i`m from the netherlands. tell me how to order. is there a different between types of savage`s ? maybey it`s better to do it by email. freddiesmidt (at) wanadoo.nl |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/17/07 at 17:30:11 I sent you a PM about the camshaft. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/18/07 at 08:08:45 This is sort of a first.... Looks like the USA is actually becoming an international source for Savage re-engineering... 8) |
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Title: Re: Cam Shaft Porosity Post by fsmidt on 09/18/07 at 15:56:29 yep , everything is about the money .....and the triangle :-[. can you still handle your sav? with all the extra HP. |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/18/07 at 18:27:38 fsmidt wrote:
What triangle? |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/19/07 at 05:07:53 fsmidt wrote:
Yep. Just as long as I don't crack the throttle too much. Gotta keep my feet on the pegs :) |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/19/07 at 13:01:47 Being one of those guys who is too short for his weight, I usually try to keep my body weight as far forward as possible in order to keep the front roller on the pavement. Sometimes it actually works. I do have to slip the clutch a good bit for the best "off the line" getaway, otherwise if I let go to quickly it will rear its head immediately. |
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Title: Re: Cam Shaft Porosity Post by fsmidt on 09/19/07 at 15:31:34 LANCER wrote:
o my god!!! yourè still a virgin ;D ;D |
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Title: Re: Cam Shaft Porosity Post by fsmidt on 09/19/07 at 15:51:32 i spoke with a college about our camshaft "problem". and he is a specialist. "father" of 2 stroke engine and tuning. won several dutch open racing championships with his tuned bike. 8) 8) ok, not 4stroke but still a lot of experiance he told me and i`m a believer(typo?) . the parts witch are missing , were missing right from the beginning of manufacturing of the cam. he also told me it is not a problem ,it is just better this way because more oil is holding on the lobes. when youre having too tight valve clearance the damage would be more equal . @lance neverless i still want to buy the special and secret webcam cam. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/19/07 at 17:13:21 fsmidt wrote:
Great. That's an answer that's easy for me to believe. It is porosity (works good for me too) :P Poor grade material. Yes, get Lancer's high tech secret cam. It won't have holes in it either ;D |
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Title: Re: Cam Shaft Porosity Post by fsmidt on 09/21/07 at 15:22:51 he greg. how many HP do you think the savage would increase with all your modifications? i just can`t wait to put all the stuff together. i`m curious for the sound of the Raask 60mm and the increased exhaust port. |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/21/07 at 21:08:02 A PILE OF THEM |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/22/07 at 05:57:54 fsmidt wrote:
That's a really good question, but I won't be able to give you a definitive answer until my dynamometer arrives....(just kidding). In a way, this is a case where I didn't use KISS. I made several changes, and I'm still trying to figure out which one had which effect because the overall result was so good. Let's just guess at a couple HP for now. The throttle response is much much better. There is no hint of hesitation from idle at all. Response is dam near instant. I did the following: - polished the cylinder head (combustion chamber) - ported the exhaust by 2 MM at the outlet and opened the entire passage all the way back to the valve guides. - installed Lancer's Web Cam. - repacked the Raask pipe. - installed my custom made Raask baffle for back pressure. Yesterday, I noticed that I am beginning to get a slight amber color at the inlet of the Raask pipe, which is a new change. (I don't mind amber but don't want blue.) Since I have been running 152.5 main jet and this coloration is just now starting, I must be leaner than before. That also means that I have increased air flow....SO, when I parked the bike, I also drained the carb...today the 155 main jet goes in. So, let's just say that with the increased valve lift and exhaust area I am definitely getting better flow... ...oh yeah, one additional change was the lowered final ratio with the chain conversion. That also confuses the "feel" of the ride, because along with improved response, I have lower RPMs throughout the whole range (relative). BTW - photos of all my exhaust work are available on my CD too ;D |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/22/07 at 06:08:37 fsmidt wrote:
I forgot this part... Let's just say that the Raask pipe just plain barks when you crack open the throttle. It screams at WOT. It sounds like 1/2 of any open exhaust big v-twin on steroids. You may want a different helmet or ear plugs ;D |
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Title: Re: Cam Shaft Porosity Post by fsmidt on 09/22/07 at 06:41:27 Savage_Greg wrote:
yes ,it is youre fault that i`m busy with all the modification. it all started with youre cd. ;D tnx for youre BIG reply @lance i paypaled you the bucks and thank you for making it possible to tranfer some goodies from the STATES to HOLLAND. |
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Title: Re: Cam Shaft Porosity Post by Savage_Greg on 09/22/07 at 06:58:15 fsmidt wrote:
Glad that the CD has given you the inspiration to do these changes (I just found your email). Thanks for the feedback. Ya know, that's an interesting point too. I have sold quite a few CD's to members here... ....but I always ship them to a REAL NAME. That always leaves me wondering "who is who", because there is no way for me to compare a customer with their USER NAME in this forum (unless we've chatted in a PM or something). ...Maybe I should ask for a username at the PayPal checkout. Hmmm... Thanks for the idea, too. |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/22/07 at 11:00:54 The REAL NAME vs SAVAGE SITE USER NAME can be a real challenge to keep track of. I try to keep notes with orders and such but being consistent with it is hard for me. I keep telling myself that I am going to make an address book type of thing with all of the names but it has not happened yet....maybe one day. Can we make a page on this site that has a quick reference of real name/site name thing? |
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Title: Re: Cam Shaft Porosity Post by verslagen1 on 09/22/07 at 11:31:44 I know what you guys mean, have the same issue myself. But, I'd resist giving out such details cause of all the scammers out there. It's like that commerical, here I'm verslagen1, over there I'm john smith, down the street, bob. |
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Title: Re: Cam Shaft Porosity Post by LANCER on 09/22/07 at 14:39:36 Good point |
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