On May 4, 2006, at 11:54 PM, Milton Schick wrote:
Date: Thu, 4 May 2006 20:10:00 -0700
From: "Infinite Space Systems, Inc." <[EMAIL PROTECTED]>
Subject: Re: Cost of 600HP
Kevin,
The expensive bit for me will be the (custom) forged pistons,
since flat-
tops ain't gonna be boost-friendly. I could get away with using
flat- tops
and big-block or #8 (or 403 4A) heads. That would drop the
compression to
a more boost-friendly number. Shooting for 8.0:1 - 8.5:1.
You're confusing me. To get 8-1 CR, you need a flat top piston. You
also
need forged pistons to handle the pessure from the turbos. So
what's the
problem? You will need to design a flat top forged piston to work
in your
application and have Ross, J&R, Arias, BRC, etc. make it. In your
case, it
will be a neat piston, since it will be down in the hole enough
that you
won't need valve releifs cut.
I can only use flat-top pistons *if* I use BBO-chamber heads, which
will also require intake modifications if I actually use BBO heads.
If I use #8 or 4A heads, I have to redrill the block for 1/2 head
bolts (not necessarily a bad thing,) or use those bushings for just
such an emergency.
If I want to use stock #6,7,8 heads, I need forged pistons made to
the same specs as stock '71-2 pistons.
First thing to do is to measure an actual head gasket, and decide on
heads and CC them, then fart around with pistons.
Unless I stumble into a couple thousand dollars (Let's go, Texas
Lottery! :D), this is all probably years in the future...
I'll probably start asking for help then from the experienced on
ordering custom pistons.
On digest mode, so I'm a little slow...
Kevin Wright
[EMAIL PROTECTED]
Dallas/Ft. Worth, TX http://
www.wankel.net/~krwright/cars/olds/70Olds.html
'71 Cutlass S for sale, less engine and trans: http://www.wankel.net/
~krwright/cars/olds/71_cutlass.html
Snoopy: 1970 Oldsmobile Cutlass S Sports Coupe - It wants to be a
W-31! And have EFI, 4-wheel discs, a 6-speed, a turbo or two... :)
...and a '71 Holiday Coupe less engine/transmission for sale - it'll
be parts if someone doesn't buy it!
