I have been recently diagnosing and fixing various performance issues on my mostly stock 6 bolt. I found that I had a boost leak into the crankcase. I did a compression test with the engine warm and the throttle open. Cylinder 1 and 2 were about 70 psi dry and 80 psi wet. 3 and 4 were about 80...

Hey guys , so I will be doing a slight refresh’s on my 98 GSX due to me about to hit 85k miles and I ran a compression test just to see where I’m at before I do the refresh and my numbers came out a weird , 150,150,180,180 . There’s nothing wrong with the dsm, pulls hard , no oil consumption...

I'll start with the question: The leak is small and isolated to Cyl 1, since it is at the end of the motor is it worth trying to tighten the head on that side of the motor? Ive never opened up my motor so im unfamiliar with how accessible the head bolts are or if i might as well do the gasket...

What's up guys.I have a G4CS block with a 4G63 head. Compression tests came back 180 across the board. I just performed a leakdown test and I have about 15% on 3 cylinders, and closer to 20% on #1 cylinder. Used 100 PSI. All of the leak was crankcase. No intake, exhaust, or HG leaks. I did...