<VV> 65-66 Turbo heads prone to pinging?

[Duane, Jim E.]

Hi Tony.

And add that oil return hole...  Next time you get some, let me know.  I'll take them off your hands!

Jim Duane
Colonial Corvairs
CORSA
'66 180 CVT

-----Original Message-----
From: virtualvairs-bounces at corvair.org [mailto:virtualvairs-bounces at corvair.org] On Behalf Of tony.underwood at cox.net
Sent: Friday, October 31, 2008 11:04 AM
To: PatioMatt at aol.com; virtualvairs at corvair.org
Subject: Re: <VV> 65-66 Turbo heads prone to pinging?




Been there done that, it's no contest.  The '65-'66 turbo heads are terrible.   I eliminated the vast majority of pinging by using different heads on a couple of turbo engines.   I gave the turbo heads away...  after removing the thermisters.   I couldn't logically think of any good reason to ever run them on anything.

Likewise those smog heads... same chambers, just as bad.


You skeptical guys doubt it if you like.    But if you use 95 heads and cut the gasket surface a tad to reduce the squish area (and improve charge turbulance) you will become happy.

...don't forget to recurve the distributer since the combustion chambers will be more efficient and you won't need so much initial advance.    24 degrees will become a memory.


tony..
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