Hey guys like to run a question past you regarding valve inspection numbers on a 2007 GSXR750; 37k miles. Got this thing opened. All my intake numbers are sitting well within range .003-.007 #1 .005/.006, #2 .004/.004, #3 .005/.005, #4 .004/.004 Exhaust valves are all right at the limit of the tight side of spec .007-.011 One valve is by my measurement out of spec tight at .006 while all others are at .007. The one valve at .006 i can still push the shim in; however considerably tighter than all others but it will go in. Looking to get a bit of insight on this situation from those running GSXR motors. Clearly what im getting at is if i don't need to go ahead and pull cams and proceed further i would rather not. Some have eluded that at 37,000 miles and having had a prior adjustment things are likely settled in and not going to move for awhile, some say adjust. Its the one valve at .006 that has me wondering; is it tight enough to move forward or let it be and run it for a bit. If i were to proceed im guessing suggestion would be to loosen all the exhaust up a bit? Thoughts? Bike is not raced; track day only, 3 to 5 days a summer.
Just picked up an 03 with 33k miles and getting ready to dig into valve check and compression check. Looking forward to the input you'll receive.
If the standard specification is .007 to .011, then your target is .009 plus or minus two. .006 is not within spec. I typically shoot for plus or minus one. It's open now, you have time now, get it right now. Is it absolutely necessary? Probably not. You should be putting very little force on a feeler gauge, it should just barely drag enough to notice it's dragging. If it takes some force, it is not correct. You will of course get many opinions.
Iroc, Yea this one does not slip in at .007 but .006 does. I suppose i am along your train thought. Just well...lazy hahah. With these being pretty durable motors kinda shot it out if others have run em at this number no issues for a bit.
