egvtec

Well i finally got my sc61 on and i went out and did some pulls. When I noticed it wasnt pulling like It should i even had the boost up to 15 psi and it was pulling good but probably only making 230ish whp. thats what it felt like. And i pulled in and did a compression test and it came out as 90, 150, 120,120 I am thinking it is a blown head gasket. but what other things could it be? there is some oil here and there. that spalettered on the hood. any guesses? it idles fine. before i started tearing it down.

TurboLSVtecTeg

Either a headgasket or rings more then likely. I would take the motor apart and see whats going on. Those numbers are really low. I think its either the rings or maybe your valves are bent and leaking.

egvtec

i hace two cracked sleeves. but theyre real tiny at the top, could that have done that much to drop my compression?

TurboLSVtecTeg

Thats your culprit then. Either resleeve the block or get a new one.