Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 2 minutes ago, spurdy said: I don't have anything stick to compare it to but I think stock static compression should be around 130 psi Fresh. Anything less than 80 or 90 psi is getting pretty worn. Sent from my iPhone using Tapatalk I hear stock is 110-150 so my right side was pretty high which is a good thing right? But as for that left side? It's dead Quote Link to comment Share on other sites More sharing options...
Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 1 minute ago, ginger said: pretty much. most guys are between 115-130 without any mods depending on a few other factors. im going to say the one piston is toast. only way to confirm it is by pulling the head. How could this have happened? Is rebuilding something I can take on myself if it comes down to that? Quote Link to comment Share on other sites More sharing options...
spurdy Posted June 27, 2017 Report Share Posted June 27, 2017 I hear stock is 110-150 so my right side was pretty high which is a good thing right? But as for that left side? It's dead Left side is too high if it really is 180. That is going to cause detonation on regular 87 octane fuel. Hell, it will even deto on 91 octane. Right side at 30psi will never fire. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 (edited) 2 minutes ago, spurdy said: Left side is too high it it really is 180. That is going to cause detonation on regular 87 octane fuel. Hell, it will even deto on 91 octane. Right side at 30psi will never fire. Sent from my iPhone using Tapatalk Vice versa left side when sitting on the quad is the one that's low. Regardless, I always pump 93 nothing lower. What should be my next step here guys? not looking like I'm gonna be taking the shee out this weekend huh? Fml Edited June 27, 2017 by Rawnold Quote Link to comment Share on other sites More sharing options...
spurdy Posted June 27, 2017 Report Share Posted June 27, 2017 Vice versa left side when sitting on the quad is the one that's low. Regardless, I always pump 93 nothing lower. What should be my next step here guys? not looking like I'm gonna be taking the shee out this weekend huh? Fml180 static compression will require nothing less than 110 octane. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
ginger Posted June 27, 2017 Report Share Posted June 27, 2017 10 minutes ago, Rawnold said: Vice versa left side when sitting on the quad is the one that's low. Regardless, I always pump 93 nothing lower. What should be my next step here guys? not looking like I'm gonna be taking the shee out this weekend huh? Fml next step in my mind is drain the coolant and pull off the head. see if the piston is damaged. Quote Link to comment Share on other sites More sharing options...
Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 7 minutes ago, spurdy said: 180 static compression will require nothing less than 110 octane. Sent from my iPhone using Tapatalk Damn then it's possible I kicked it too many times? I mean I kicked till the needle didn't move any further, I was hitting the throttle don't know if it matters. My left side I kicked just as many times but it wouldn't go past the 30s range Quote Link to comment Share on other sites More sharing options...
Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 1 minute ago, ginger said: next step in my mind is drain the coolant and pull off the head. see if the piston is damaged. Hot damn. Sounds like I'm gonna be in for some serious mechanical shit.. I'll look up some videos and talk to my buddy to see if he can maybe give me a hand with it. I'll keep you guys posted. As always much appreciated fellas 1 Quote Link to comment Share on other sites More sharing options...
Lowflyin Posted June 27, 2017 Report Share Posted June 27, 2017 After reading through this, I would send out to motor to a reputable builder if I were you .. Not to be a dick but I would not attempt to rebuild a motor without even knowing the strokes of a motor. Sent from my LG-H820 using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 8 minutes ago, Lowflyin said: After reading through this, I would send out to motor to a reputable builder if I were you .. Not to be a dick but I would not attempt to rebuild a motor without even knowing the strokes of a motor. Sent from my LG-H820 using Tapatalk I mean everything is a learning process imo.. if this isn't something you need serious experience for it's just kind of a swapping parts type of things I can definitely do it, especially with a forum giving me support.. but if that isn't the case and this is something that's gonna take experience let me know Quote Link to comment Share on other sites More sharing options...
ginger Posted June 27, 2017 Report Share Posted June 27, 2017 if you dont know about gapping plugs or doing a compession test. you are either going to want to just spend a ton of time just reading on here, or taking it to someone. down in flordia there is this southern performance guy that does good work from what i can tell. Quote Link to comment Share on other sites More sharing options...
spurdy Posted June 27, 2017 Report Share Posted June 27, 2017 Damn then it's possible I kicked it too many times? I mean I kicked till the needle didn't move any further, I was hitting the throttle don't know if it matters. My left side I kicked just as many times but it wouldn't go past the 30s rangeYou can't kick it over too many times. Holding the throttle wide open will help reach max static compression faster. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 21 minutes ago, spurdy said: You can't kick it over too many times. Holding the throttle wide open will help reach max static compression faster. Sent from my iPhone using Tapatalk Just didn't it again, if I'm supposed to kick till the needle stops moving what I said earlier was pretty accurate. If anything the left side is a little higher closer to 50. About to remove head, should I remove the head or the shearer exhaust first to look at my piston before removing the head? Quote Link to comment Share on other sites More sharing options...
kawa110 Posted June 27, 2017 Report Share Posted June 27, 2017 If u have 50psi and it is accurate....Time for rings. Pull the exhaust and carbs so u can pressure test. Then pull the head. Quote Link to comment Share on other sites More sharing options...
Rawnold Posted June 27, 2017 Author Report Share Posted June 27, 2017 1 hour ago, kawa110 said: If u have 50psi and it is accurate.... Time for rings. Pull the exhaust and carbs so u can pressure test. Then pull the head. Just saw this, already pulled off my head heres some pics, the hose you see is the radiator hose so let that be your north. https://ibb.co/bQSexkhttps://ibb.co/iTH1A5 Piston does not look too damaged to me, the left side piston (one with low compression) does seem kinda grinded on the edges but not tore up. How can I check rings? Do I have to pull off cylinder as well? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.