hercalmighty Posted July 26, 2017 Report Share Posted July 26, 2017 125 psi? Either you have a bad tester or something is screwed up. Did you check your squish?Sent from my VS990 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Cody_t123 Posted July 26, 2017 Author Report Share Posted July 26, 2017 3 minutes ago, hercalmighty said: 125 psi? Either you have a bad tester or something is screwed up. Did you check your squish? Sent from my VS990 using Tapatalk tester should be good. Ill let you know about compression in a couple hours since the rings should be seated. I havnt checked the squish other than I know the pistons dont touch the domes but maybe at higher rpms they would? if my squish clearance is off, how do I fix that? i have the stroker domes and the 795 pistons. would my base gasket be the issue? Quote Link to comment Share on other sites More sharing options...
ginger Posted July 26, 2017 Report Share Posted July 26, 2017 if it is still only 125 then that is a big issue. Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted July 26, 2017 Report Share Posted July 26, 2017 (edited) Doesn't matter if the rings are sealed you aren't getting an extra 40 psi from sealed rings lol. There is your problem without a doubt. During the test your are holding the throttle wide open and kicking the hell out of it until the needle stops? Edited July 26, 2017 by Ayesully810 Quote Link to comment Share on other sites More sharing options...
Cody_t123 Posted July 26, 2017 Author Report Share Posted July 26, 2017 5 minutes ago, Ayesully810 said: Doesn't matter if the rings are sealed you aren't getting an extra 40 psi from sealed rings lol. There is your problem without a doubt. During the test your are holding the throttle wide open and kicking the hell out of it until the needle stops? yup, kicking the crap outta it at wot. im going to pull the head off and see if i can see anything in there. Ill comp check it one more time first to make sure Im giving you accurate numbers Quote Link to comment Share on other sites More sharing options...
hercalmighty Posted July 26, 2017 Report Share Posted July 26, 2017 Do a leak down also before you open anything upSent from my VS990 using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
blowit Posted July 26, 2017 Report Share Posted July 26, 2017 Agree with above, you need to check the squish clearance as this may indicate some of what is going on. Beyond that, it might be wise to pull the head and verify the exhaust height so the duration can be determined. It sure sounds compression related though. Wrong pistons or wrong domes. You also mention having detonation issues. That can happen with very loose squish due to the flame front pretty much exploding, rather than getting a centralized controlled burn. You should NOT be having detonation issues with that setup, and timing can easily go beyond 4*. 2 Quote Link to comment Share on other sites More sharing options...
Cody_t123 Posted July 27, 2017 Author Report Share Posted July 27, 2017 4 hours ago, Ayesully810 said: again? what was it when you checked it after the re build? You should be at least 170 psi in each cylinder with compression with that 110 gas. If not that will explain a part of your problem. Carl does top notch work. Ok so we just comp checked it, it's at 175+ for both cylinders, passed the leakdown test holding 6lbs for over 6 minutes. Quote Link to comment Share on other sites More sharing options...
Cody_t123 Posted July 27, 2017 Author Report Share Posted July 27, 2017 3 hours ago, hercalmighty said: Do a leak down also before you open anything up Sent from my VS990 using Tapatalk Holding 6 lbs for 6 plus minutes on the leak down, 175+ compression on both cylinders Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted July 27, 2017 Report Share Posted July 27, 2017 My travel season is over and I will gladly take the bike and figure it out for you. Me personally would run shearers on that set up the lrd could be heat soaking the cylinders or incorrect signal which would explain why you could throw 410s at it and it still be lean . I have done 100s of 4 mill stockers and never had anyone disappointed with port work so I would love to see what the deal is. I also have every pipe known to man on hand so I can see what works best. I feel for you . 1 Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted July 27, 2017 Report Share Posted July 27, 2017 Have you tried adjusting the pipes? Quote Link to comment Share on other sites More sharing options...
ginger Posted July 27, 2017 Report Share Posted July 27, 2017 i ran LRD pipes on my stock cylinder 4 mil with no issues. Quote Link to comment Share on other sites More sharing options...
blowit Posted July 27, 2017 Report Share Posted July 27, 2017 Sleeper, I agree that pipes may be causing some issue here but we built several for guys running those and never had one produce "no more power than it did before". I really think the squish and ex duration needs checked. It could be that the duration is so wild that those pipes will never work right. Or it could be a really piss poor dome setup. All I know is it would be hard to throw a 4mil crank and porting at an engine and NOT make more power, even by accident! I suspect you or someone experienced could just take a rip on the bike and figure out what is going on. I remember several coming in the door that were actually massive clutch slip problems! You can't run a 4mil on the stock clutch setup. I also remember a guy bringing us a bike because no one could figure out a "clutch slip" problem. That one was actually tires spinning on the wheels! He had ag bike tires on it. Quote Link to comment Share on other sites More sharing options...
Cody_t123 Posted July 27, 2017 Author Report Share Posted July 27, 2017 24 minutes ago, blowit said: Sleeper, I agree that pipes may be causing some issue here but we built several for guys running those and never had one produce "no more power than it did before". I really think the squish and ex duration needs checked. It could be that the duration is so wild that those pipes will never work right. Or it could be a really piss poor dome setup. All I know is it would be hard to throw a 4mil crank and porting at an engine and NOT make more power, even by accident! I suspect you or someone experienced could just take a rip on the bike and figure out what is going on. I remember several coming in the door that were actually massive clutch slip problems! You can't run a 4mil on the stock clutch setup. I also remember a guy bringing us a bike because no one could figure out a "clutch slip" problem. That one was actually tires spinning on the wheels! He had ag bike tires on it. 1 hour ago, ginger said: i ran LRD pipes on my stock cylinder 4 mil with no issues. 2 hours ago, sleeper06 said: Have you tried adjusting the pipes? 2 hours ago, sleeper06 said: My travel season is over and I will gladly take the bike and figure it out for you. Me personally would run shearers on that set up the lrd could be heat soaking the cylinders or incorrect signal which would explain why you could throw 410s at it and it still be lean . I have done 100s of 4 mill stockers and never had anyone disappointed with port work so I would love to see what the deal is. I also have every pipe known to man on hand so I can see what works best. I feel for you . I solved the problem last night. Noss sent me blaster cut stroker domes instead of banshee cut domes. They were way too deep! Unfortunately, while trying to set up jetting with the screwed up domes, I melted an electrode on my plug which screwed up my ported stock cylinders... Soo my serval cylinders are on order now lol. Thank you guys for all the input! Me and Carl are going to make a day of tuning the bike when I get the serval installed! 1 Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted July 27, 2017 Report Share Posted July 27, 2017 Oh boy you had me scratching my head like wtf. I'll take those cylinders back if there useless to you. I will tell you this those cylinders correctly set up will outrun a serval. Brandon the duration was 195-196 with 35 blowdown, not optimal for that pipe but I've used them before also. What really got me was how he said the gear revved instantly and I know with my porting and those blowdown numbers it should feel like turbo when it gets on the pipes and over rev better than most. It just sucks you never got to see the full potential of those cylinders . 1 Quote Link to comment Share on other sites More sharing options...
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