bansheefourseven Posted August 6, 2006 Report Share Posted August 6, 2006 (edited) I just ran a compression test on my 96 shee today and it was reading around 100psi :ermm: I know now its time for a new top end. It feels like its running strong but 100 lbs with the throttle wide open is low . What should I do? Money is an object so lets not suggest a stroker of any kind. Should I just hone it and replace the rings? Or bore it (.010 or .020) over and replace the pistons and rings just to be safe. I am getting some T5s and a trail port job eventually but I dont want it stroked yet. Im also going to get a hi flo water pump (impellar) and a new radiator cap because it has been puking coolant after short rides on my small track at the house (Although it has been 90+ lately but it still seems to be over heating) My plugs are light brown and very clean so jetting is not an issue. I popped the radiator cap off and started it to see if it was flowing and I couldnt tell due to the vibrations. Should it be obvious that its flowing or does it not flow that fast? Any help would be great!! Thanks AK47 Edited August 6, 2006 by bansheefourseven Quote Link to comment Share on other sites More sharing options...
sredish Posted August 6, 2006 Report Share Posted August 6, 2006 the "textbook" way to proceed is to pull the head and the cylinders and measure the cylinder bore top and bottom and side to side to see if you can detect any out-of-roundness. Also, mic/measure the pistons to see if they're still in spec, if so, just put new rings on and reinstall the pistons, if not, get new piston and rings. You don't automatically need to rebore and you don't automatically need new pistons. I can usually use the same pistons for two cycles, meaning new pistons and rings, then rering. After using them the second time, I'll need new pistons and rings. chances are you can pull the cylinders, rehone them and get new pistons and rings and be golden. while the head's off, get it milled for more compression. Quote Link to comment Share on other sites More sharing options...
bansheefourseven Posted August 6, 2006 Author Report Share Posted August 6, 2006 Im going to have them honed and re ring it if everything looks ok and run the piss out of it.!!! Quote Link to comment Share on other sites More sharing options...
sredish Posted August 6, 2006 Report Share Posted August 6, 2006 Im going to have them honed and re ring it if everything looks ok and run the piss out of it.!!! go for it bro! Quote Link to comment Share on other sites More sharing options...
chase@miamiatv.com Posted August 6, 2006 Report Share Posted August 6, 2006 just add some compresion restore its like 2.50 a bottle at discount Quote Link to comment Share on other sites More sharing options...
bansheefourseven Posted August 8, 2006 Author Report Share Posted August 8, 2006 If that last post was the best this site can answer then thats pretty sad! I thought this was supposed to be the best banshee site around. Compression restore??? WTF Maybe if it was a 81 IROC Z for sale in the fucking discount parking lot you fucking mullet wearing bastard (chase) Oh and thanks to you other guys for the real answers!! Hey chase , wayne gretzky just called and wants his hairstyle and compression restore back!!! Quote Link to comment Share on other sites More sharing options...
addicted Posted August 8, 2006 Report Share Posted August 8, 2006 If that last post was the best this site can answer then thats pretty sad! I thought this was supposed to be the best banshee site around. Compression restore??? WTF Maybe if it was a 81 IROC Z for sale in the fucking discount parking lot you fucking mullet wearing bastard (chase) Oh and thanks to you other guys for the real answers!! Hey chase , wayne gretzky just called and wants his hairstyle and compression restore back!!! WELL SAID! Quote Link to comment Share on other sites More sharing options...
steveodo Posted August 8, 2006 Report Share Posted August 8, 2006 I think chase was just kidding or so i hope Quote Link to comment Share on other sites More sharing options...
sredish Posted August 8, 2006 Report Share Posted August 8, 2006 I'm sure chase was kidding! Quote Link to comment Share on other sites More sharing options...
bansheefourseven Posted August 8, 2006 Author Report Share Posted August 8, 2006 Im sure he was too ! So was I !!!! I wasnt trying to be a dick I was trying to be funny!! I just pictured a mullet dude saying hey I just put some compression restore in my IROC dude!!!LOL Quote Link to comment Share on other sites More sharing options...
csrmel Posted August 8, 2006 Report Share Posted August 8, 2006 LoL, make sure youre compression tester is actually good. i have 3 bad testers that only went up to xxx psi;. one of them only hit 100, no matter what the real compression was.... Quote Link to comment Share on other sites More sharing options...
bansheefourseven Posted August 8, 2006 Author Report Share Posted August 8, 2006 My buddy checked his 250r the same time as I did and he had 150 psi so Im sure the tester is good. Its a 96 stocker shee and the top end has never been redone. The guy said he hardly ever rode it but dont they all. I checked each cylinder individually. You dont have to take the spark plug out of the other cylinder when you check one side do you? I did have the throttle held wide open. Im wondering because I was surprised that they have lost the exact same amount of pressure both were holding steady at 99 lbs and held for a min or two but wouldnt go no higher no mater how many times you kicked it. Im kinda pissed because I coulda got it a couple hundy cheaper had I known before I picked it up! Quote Link to comment Share on other sites More sharing options...
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