<VV> 140 power increase

[Roger Gault]

Matt's correct (always a 50-50 chance - LOL) cutting the step is the most
bang for the buck.  My experience is that you don't have to do anything to
reduce the CR - the better detonation resistance from the better squish
cancels out the tendancy to ping caused by the greater compression.  My 140
has always required 92 octane, but it pings less with the step cut than it
did before.  Doesn't ping at all below 90F ambient.

On the adjustable cam gear, if you want to go that way, I have a mod to
Ray's adjuster (and a minor block mod) that allows you to change the cam
timing with the engine still mounted.  All you have to do is remove the oil
pan for access.  If you want an explanation/pictures, let me know and I'll
email a Microsnot Word document.

Roger

----- Original Message ----- 
From: <UltraMonzaWest at aol.com>
To: <virtualvairs at corvair.org>
Sent: Wednesday, March 22, 2006 10:30 AM
Subject: Re: <VV> 140 power increase


> In a message dated 3/22/2006 5:49:47 AM Pacific Standard Time,
> ron67ran at hotmail.com writes:
>
> > Any suggestions on rebuilding my engine for more power--what seems to
work
> > best for the money and still leaves it streetable? Know lots about small
> > block chevys but this is my first vair engine to work on
> >
>
****************************************************************************
**
> ****************
>
> Most likely the Biggest "Bang"  for the $$$  is to reduce the "Squish" in
the
> heads.  This also can  increase compression ratio  if desired...and still
run
> on 89+  octane.
>
> This invloves cutting the gasket "step" to reduce the distance from the
> piston to the "Step"  in the combustion chamber.  You then adjust CR  by
removing
> metal from the pocket.  0.032"  is minimum  distance....closer the better.
>
> Next,  depending on what cam / transmission /  diff. gears you'll
run......An
> adjustable camshaft gear!  From www.american-pi.com   It's failsafe!  and
you
> can tune your cam to best performance without a complete teardown!
>
> Stock carbs...possibly Bored 1/8" work great!   A good distributor advance
> curve  and free flowing Air intake / exhaust  also make a big difference.
>
> Matt Nall / Patiomatt / WCUH / Mr. DeckRug
> 69 Monza Cpe., 66 Monza vert, 65 Crown v8 Cpe.
> Somewhere between Reno, NV and Coos Bay, Or.
> http://members.aol.com/patiomatt    Corvair Info!
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