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Old Jan 5, 2004 | 11:45 AM
  #15  
westcoaststyle's Avatar
westcoaststyle
Still here... sorta...
 
Joined: Sep 2000
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From: CO
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Originally posted by qtiger
I would take that crank to a machine shop and have it spec'ed.

How does the oil pump look?
I planned to take the crank to a shop. I don't know that I'll even be using it as my current bottom end is balanced, but it will probably throw that off with a new set of pistons.

I haven't taken the oil pump apart yet. The kid said that that's what he thought went wrong with the motor. I'm going to look into it.

Most everything that's currently on my block will be brought over to this one so if this oil pump's bad, it really doesn't matter cause I'll be using my current one.

PHiZ: As for the sleeves, I have only heard good things about AEBS. They charge just about $1400 to do the sleeves (installed with parts). I may PM that guy, but I'd need some really REALLY good proof that those won't drop or burn up under stress.

I've been thinking about upping my CR to 10:1, but I'm not sure. I know I could make more power and that my rods/sleeves would be able to handle the extra stress, but here's my thoughts:

If I up the CR, the turbo won't need to work as hard, but it will put more stress on the internals. I want to keep the turbo within it's efficiency range and only running 10 PSI prolly isn't even touching the turbo.

Thoughts? Should I go higher CR or keep it at 9.5:1? I'm not going below 9.5:1.

Now, before you reply (for those new to boost), realize that the big taboo with boost is that you want to have lower compression. This isn't necessarily true. Lower compression is safer for boost, but the higher the compression with less boost the more power you create.

For instance, you can create 200 whp at 10 psi on 9.5:1 CR, while you can create the same whp on 6 psi at 10:1 CR.

Hope it makes sense....
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