bbcmudtruck Posted September 15, 2008 Report Share Posted September 15, 2008 I checked my squish and came up with .059 to .060. I have 160-165lbs compression with 17cc domes, with a dune port at 1000ft elevation. Can I put a thicker base gasket to get the tolerane correct? Or should I just run it? I searched and came up with .040--.045 for correct squish numbers, what should they be? Ryan Quote Link to comment Share on other sites More sharing options...
mdhc500 Posted September 15, 2008 Report Share Posted September 15, 2008 I checked my squish and came up with .059 to .060. I have 160-165lbs compression with 17cc domes, with a dune port at 1000ft elevation. Can I put a thicker base gasket to get the tolerane correct? Or should I just run it? I searched and came up with .040--.045 for correct squish numbers, what should they be?Ryan Maybe Mopar will know... He is the KING of all that is squish... lol :biggrin: Quote Link to comment Share on other sites More sharing options...
shanYE west Posted September 15, 2008 Report Share Posted September 15, 2008 you would want to run a thinner base gasket to get the squish down to the mark your shooting for. The best way would be to cut some new domes but that tends to be a lil more costly. Quote Link to comment Share on other sites More sharing options...
Bansh-eman Posted September 15, 2008 Report Share Posted September 15, 2008 you are a pretty good ways out. you need to tighten it up. What thickness base gaskets did you put on there? You can either drop the base gaskets thickness, or cut some domes. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 15, 2008 Report Share Posted September 15, 2008 Run it. Crank the timing up a bit. What is the squish band in mm? (The length of the squished area?) Also...did you check the squish on both sides, left to right, NOT Front to back to get an accurate number? Run it. I run .055 to .056 on my bike...and I used to think mid to upper .040's was the magic number to shoot for. Run it. Running a thinner base gasket will bring that number down. It will also lower port timing... Run it. Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted September 15, 2008 Author Report Share Posted September 15, 2008 Yes both sides measured .059. I measured them along the plane of the wrist pin. The length of the squish in mm is 12.8 on one side and 17.5 on the other. As far as I know I have a stock base gasket. So your saying that I won't gain anything by changing the base gaskets out? Ryan Quote Link to comment Share on other sites More sharing options...
shanYE west Posted September 15, 2008 Report Share Posted September 15, 2008 I'd run it.. I'd be more worried if it was too tight.. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 15, 2008 Report Share Posted September 15, 2008 Yes both sides measured .059. I measured them along the plane of the wrist pin. The length of the squish in mm is 12.8 on one side and 17.5 on the other. As far as I know I have a stock base gasket. So your saying that I won't gain anything by changing the base gaskets out?Ryan I'd be more concerned about it being 5mil off on the band instead of the clearance..... Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted September 15, 2008 Report Share Posted September 15, 2008 I'd be more concerned about it being 5mil off on the band instead of the clearance..... Exactly what I was thinkin. Tightening up the squish will improve bottom to mid performance, a loose squish clearance is fine for a bike intended for high rpm drag racing ect. Quote Link to comment Share on other sites More sharing options...
4stroker Posted September 15, 2008 Report Share Posted September 15, 2008 The length of the squish in mm is 12.8 on one side and 17.5 on the other. whats goin on there?? is that a typo or what? Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted September 16, 2008 Report Share Posted September 16, 2008 I am trying to get an idea of what kind of rpms this bike sees. What pipes do you run on it? Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted September 16, 2008 Report Share Posted September 16, 2008 Maybe Mopar will know... He is the KING of all that is squish... lol :biggrin: am i sensing sarcasim? i have mine at .050" squish right now, and will be shaving another .010-.015" off the stock head, but then recutting the squish so its at .045". how come you call me the king of squish? Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted September 16, 2008 Author Report Share Posted September 16, 2008 Well maybe I miss interpreted on what you guys were asking for. The 12.8 and the 17.5 is the length of the squished part. Meaning I got more of the solder squished on one side, length wise. Are you wanting the width or what? I could get 17.5 on both sides if I kept trying to get the dam solder to fit in the hole just right. I run t-5 pipes and ride 50/50 trails and drags, with +6 timing. Tell me what you guys want and I'll get you the measurements. Thanks guys Ryan Quote Link to comment Share on other sites More sharing options...
4stroker Posted September 16, 2008 Report Share Posted September 16, 2008 ah ok, so you are bending the solder to an L shape and sticking it down the plug hole? when i check squish i take the head off, cut a length of solder the exact size of the bore, place it on the piston, bolt the head back up and turn the engine over. what domes are they? are they just generic off the shelf ones? like pro design or noss? Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted September 16, 2008 Author Report Share Posted September 16, 2008 Yes correct. I am bending it in an L shape. The domes are off the shelf Noss domes, but this is the third set I have tried, 20,19 and now 17s. All of them had very low psi for the size of domes they were. Quote Link to comment Share on other sites More sharing options...
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