Is 175 across good or bad

 

That's just fine. It's not stellar, but it's pretty normal for an engine with some miles and years on it.

 

That makes me feel a little better so could I still go turbo or not. I do plan on getting it tune with turbo
Thanks

 

Well, it's not such a simple question. You can't just look at 4 numbers and say yes, your engine will hold it, or no, it'll blow up.

What I can say is this - your compression looks GOOD. If you run a reasonable level of boost (say, up to 8lbs), you *shouldn't* have much trouble holding it. I mean, heck, your engine could blow up tomorrow, for all I know. But there's nothing in those numbers that suggests that you have a major problem. Does that make any sense?

I will also say that a good tune is ESSENTIAL. If you're not properly tuned, and you start leaning out under boost, or something like that, your chances of blowing up tomorrow just went up by a LOT. Proper fuel management is particularly essential to running a turbo.

But if you're properly tuned and running well, you should be just fine.

 

thanks

 

its good. thats about what hondas run.

 

Just a note that the F20C runs in the 220-245 psi range. 175 on that motor would not be a happy compression test.