Hey-

I have a lame d15b1 in my hatch. It is my DD and I am only looking to add a little more pep to it. I am in the process of converting to MPFI. This should get me up around 90-ish HP if I go I/H/E and SI cam right? Anything is better than the 70.

Okay, now to the compression. The motor has 170,000 on it, but still runs like a top. I'm not planning on changing anything internally except the cam. I'm just curious on how much life this motor may have left.

How do you exactly calculate the compression ratio? I know I need a compression gauge, and I know how to do it. What do I do with the number I get from each cylinder?

I really don't even need a ratio per say. If someone could just tell me what I should expect, from each cylinder on this motor with that many miles, then that would work too.

Sorry for getting off topic a bit, but thanks in advance for any and all replies.

 

go to autozone and get rent one they show you

 

I planned on renting one from them...I all ready know how to use one...they will show me how to calculate compression, or what reading I should be getting off each cylinder?

 

the number you get will be diffrent with every guage, what your looking for is the difference between the cylinders. there shouldn't be more than 20% variance.

 

Okay. Thanks.