Make slowboy not so slow

[asshanson]

I agree, I expected something like 170s for compression.

[Kracka]

No offense, but i think your engine is no better than the turbo.

[Halon]

Some food for thought, another thing you could try is to hook up the boost leak tester to the TB Elbow. See if it still leaks out of the VC/dipstick. If it does, then you know it's not the turbo. If it doesn't, good chance it is. Just help verify that it is in fact the turbo.

I also agree those compression numbers are a bit low, but I've definitely seen worse.

[FattyBoomBatty]

At least they're pretty even.

[A//// Guy]

I also agree those compression numbers are a bit low, but I've definitely seen worse.

Youve seen worse on a built motor with only 2000 miles or so on it? (i think 2k)

[scheides]

Guys, don't forget that compression numbers depend on the tester equipment used. I don't use my compression tester super often, perhaps it reads 10psi low from some other one. 160 would be a much better number, and it is common for them to vary from gauge to gauge. The fact that they are all fairly consistent, that is what is important.

The turbo is definitely shot, the compressor and turbine wheels are chewed up, and there has to be air seeping past the bearings.

What's this red you got andrew, a new one or another pos used one? ;)

[Halon]

Youve seen worse on a built motor with only 2000 miles or so on it? (i think 2k)

My motor is sitting at about 160 all across according to my autozone special gauge. Maybe 3k on it?

His numbers are all even, and that's what I think is real important. The readings sometimes vary from gauge to gauge. I agree his numbers seem low, but could be worse.

[A//// Guy]

Yea its good they are even, and gauges could be inaccurate, but considering stock 2G's typically have around 180 compression, and his motor should at that or even more since its 9:1 compression. Maybe 2.3L is making the difference? I dont know. My old 1g with 7.8:1 compression had about 150 across the board, so it just seems like his is quite low. Lots of boost will have to make up for it I guess.

[asshanson]

I'm already up to like 6k on the motor, damn trips to Iowa. Anyway, I'll check with my compression tester as well, also when I get a good starter. That way I can compare to my previous results with my stock motor.

And Brandon, yes I thought of the same thing, when I have the turbo off i'll hook up the boost tester to the lower IC pipe and go from there.

EDIT: won't a compression test show lower numbers with big cams?

[scheides]

No, the valves fully open and close no matter what cams you have :)