Jeep Strokers

I spent a while chatting with Russ on Friday and I am making progress on my game plan. I am going to buy a set of rods and pistons from Russ and use the head gasket to fine tune the quench. I should be able to dial it in down to the gnats ass! I'm still undecided on CR. I'm convinced that I don't want to be any higher than 9.5, but I'm still not sure why to push it that far. Any reason not to be down around 9-9.25?

YJLopes wrote:I'm convinced that I don't want to be any higher than 9.5, but I'm still not sure why to push it that far. Any reason not to be down around 9-9.25?

To maximize hp/tq and get the best fuel economy, you'll want the highest CR possible that'll allow you to run the engine on your chosen grade of fuel without detonation.

Cheromaniac wrote:

YJLopes wrote:I'm convinced that I don't want to be any higher than 9.5, but I'm still not sure why to push it that far. Any reason not to be down around 9-9.25?

To maximize hp/tq and get the best fuel economy, you'll want the highest CR possible that'll allow you to run the engine on your chosen grade of fuel without detonation.

X2,

Couldn't of said it any better.

Some of my competitors out there are pushing combinations that utilize 27cc full circular dishes with 8.8:1ish static compression ratios normally aspirated.
That's a horrible recipe.

Don't forget the cam when deciding on a compression ratio.

IE dynamic vs. static

Russ Pottenger wrote:Some of my competitors out there are pushing combinations that utilize 27cc full circular dishes with 8.8:1ish static compression ratios normally aspirated. That's a horrible recipe.

Indeed. Full circular dish = no quench area, and no doubt you're referring to the KB421 pistons.