Keith,
I have spent waaay tooo many hours looking thru piston catalogs trying to
find an alternative for those truck slugs. I believe I actually hit on
something.
Since the compression height seems to be the problem, I found a piston that
would fit in the 3.9 bore, then started working on stroke & rod lengths to
get the piston up closer to the top of the deck.
My solution: 305 Chevy piston with a 6" Chevy rod. This combo will put the
piston .001" above the deck. Check out the specs on the KB145 piston
(hypereutectic, not forged) and try out the calculators at United Machines
website:
http://kb-silvolite.com/calc.php
By shaving the top of the piston (or not), like Glenn mentioned, I should be
able to have anywhere from 10 to 11.5:1.
BTW, I'm using the newer, small cc heads. You may need to shave your's a bit
or use a thinner head gasket.
I ran this by Dan LaGrou. He said he hasn't tried this combo, but thought it
would work.
Carl
----- Original Message -----
From: <kmwheeler@ualr.edu>
To: <mgb-v8@autox.team.net>
Sent: Tuesday, April 26, 2005 11:42 AM
Subject: 3.9 piston options?
> Hey all,
>
> Currently taking a 3.9 0.020 over. I'm interested in opinions and
experiences of high compression pistons for this -- at least higher
compression than the wimpy Range Rover pistons!
>
> Thanks,
>
> -Keith Wheeler
> Team Sanctuary
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