I agree, Dick .
8.0 to 1 or less should be fine. Like Dick says, even a torque monster like
the 6 will get doggy at a 7.0 CR off boost.
The question is gonna be how much timing, and how much boost. Be sure to run
high test, and listen for detonation! A WB O2 sensor would be a nice idea to
tune this setup. Boosted motors like lots of fuel for cooling at high power
settings. In absence of a dyno session, run rich, Mitch.
Jim
----- Original Message -----
From: "Sally or Dick Taylor" <tr6taylor@webtv.net>
To: "Shane Ingate" <madmax_xx@hotmail.com>
Cc: <dmallin@attglobal.net>; <6pack@autox.team.net>
Sent: Saturday, November 23, 2002 3:24 PM
Subject: Re: Cam bearing bore size
> Shane---A CR of 7.75:1 is 'safe enough' with a blower like Mitch has,
> when putting out around 6 lb. of boost. Stock pistons and rods are
> adequate, as well as the large SU that goes with his "kit". It's true
> that a CR of 7.0 would allow higher boost pressures, but the engine
> would probably be a dog when running off-boost.
>
> I'm afraid that a blown, high CR motor motor is sort of an oxy-moron.
> Otherwise known as a motor that can only make one trip down the drag
> strip. Again, it depends on the CR and the amount of boost pressure
> output.
>
> I don't know how long it took to bolt on Mitch's SC, but six hours
> doesn't seem unreasonable, here.
> Come back, Mitch!
>
> DT
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