<VV> Fwd: Corvair performance

[N. Joseph Potts]

First, take the cover off your oil cooler (under the alternator - easiest if
you just remove the alternator) and clean all the chaff, dirt, feathers,
hair, lint and other obstructions to air flow out of there. If you have
compressed air, blow through the oil cooler from BENEATH (right into your
face, where the stuff'll do less damage). If that doesn't do much good,
remove the top shroud (you'll have to take off just about everything else,
including carburetor, to get this off) and give the fins of your engine the
same treatment. You'll probably find a rag, maybe a dead mouse or bird, in
there. You've got to get cooling air over that engine, and THROUGH it.
     Rebuild your carburetors, making sure your jets aren't too small (49 is
the absolute smallest, I would say).
     And NEVER burn ANYTHING but PREMIUM gas, at least until you get the
knocking under control at NORMAL spark timing.
     Make sure both the damper doors at the bottom rear of the engine are
open when the engine is hot. Consider temporarily running without your lower
shrouds, again, until you get cooling and air flow under control.
     Give your combustion chambers a decoking. This is done with GM Top
Engine Cleaner (use according to instructions on the can) or with other
products from such producers as Wynn's.
     You don't need special equipment or modifications to get this engine to
run properly on premium gas.

Joe Potts
Miami, Florida USA
1966 Corsa coupe 140hp UNMODIFIED 4-speed with A/C

-----Original Message-----
From: virtualvairs-admin@corvair.org
[mailto:virtualvairs-admin@corvair.org]On Behalf Of Louis C. Armer, Jr.
Sent: Thursday, March 18, 2004 8:51 PM
To: virtualvairs@corvair.org
Cc: Michael Dennis
Subject: <VV> Fwd: Corvair performance


Hey Mike, I am fowarding your post to our 850+ membership
list called Virtual Vairs. Let's hear from others who may give
you some good tips. I am experiencing browser connection
problems presently and I have only e-mail service right now.
Please Consider joining a local club and our International
Club "CORSA"

Thanks,
Chuck Armer



>Date: Thu, 18 Mar 2004 09:58:40 -0800 (PST)
>From: Michael Dennis <mike_kd@yahoo.com>
>Subject: Corvair performance
>To: carmerjr@mindspring.com
>
>Good afternoon,
>
>By the looks of it, you more than likely DRIVE your
>corvair and I'm hoping that you could possibly help me
>out with some information. I currently have a 67 110
>that is pre smog pump. Since I've been the owner I
>have had a valve job, rings, distributer and carbs
>reworked or replaced. Trying to tune the car to the
>point that it stops hammering under exceleration is
>driving me nuts. I, like others have had to retard
>timing back to almost 8 degrees to prevent knocking.
>The problem I am having is that after driving the car
>for about 100 miles or so I get the knocking back. Is
>this a heat/compression and octane thing? I noticed
>that Clarks has a knock suppressor and was wondering
>is you know anything about it or possibly know someone
>that owns one? I've also noticed that the car labors
>to start after a 100 mile run, it's not really bad but
>it noticeably turns slower( starter,alternator and
>regulator are new ). I think it's a combined affect of
>heat,compression and the retarded timing.
>
>Any feed back would be appreciated,
>
>Thanks,
>
>Mike