Interesting reading here about the relation of CR to CP. I had never known the relation or for that matter heard the term of CP until a friend and I were talking about it tonight.

http://www.pontiacstreetperformance....mpression.html

 

that was kind of interesting............

im swaping a y8 head on my d15b8.... and i fount a website that calculated your compression ratio... and ill be at over 11:1...



http://www.knology.net/~jediklc/D.htm

 

Yeah my Accord sits at 11.7:1 and pings on pump gas. so we were talking about ways to cure that while still keeping the performance which is when this topic came up.

Pretty cool shit.

 

is forced induction preety much out of the question?

 

What for my car?

Yeah it is out of the question unless I want to go through the hassle of rebuilding my motor to a lower compression ratio. My point was all motor and it is staying that way

 

Unless you get an AEM EMS, a better fuel system, and higher octane fuel.

 

I can run 104 with no ping it's just the 91 or 92 it doesn't like.

get some 110 in there and she sings like Ella all day long

 

Besides that Brett what is being said is that if you adjust the cam settings to allow a later opening you retain the power with the same setup (to a degree) and still run on normal fuel.

It is not all about fuel delivery, in fact in many cases it isn't about that at all.

 

110..... that doesnt seem practical :hsdunno:

 

It doesn't see street use anymore.
I can still run it on pump but I just have to watch it on the top end. If I get above 8k rpm it tends to get a ping. On 104 or better I can go to 9600 rpm with no issues.