<VV> stock 140 hp engine to dyno

[Dennis Pleau]

Bob,

I usually agree with you, but this would be a great time to see a stock 140,
and all the deviants on the same dyno.  Yes the Chevy data is probably more
accurate, but 10 or 12 pulls of modified engines compared to a stock 140
will be great information as to what modification does what.  We can't
compare someone's chassis data pull today against an engine dyno pull in
1964 as apples to apples.  I really hope someone runs a stock 102 as I've
always thought that was the funniest  engine to drive on the road.  Short on
torque, but lot of power at high RPMs.

dp

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of BobHelt at aol.com
Sent: Friday, February 26, 2010 8:45 PM
To: cliff at tibweb.com
Cc: virtualvairs at corvair.org
Subject: Re: <VV> stock 140 hp engine to dyno

 
In a message dated 2/26/2010 7:07:51 P.M. US Mountain Standard Time,  
cliff at tibweb.com writes:

Most of  the racers and performance enthusiasts that will be at the CPW,
begin with  a 140. To be sure they are highly modified and some have the big
bore setup  and much more.  I think the purpose of the bone stock 140 is to
give  the racers a baseline for comparison.  And since this is a drive  on
dyno, the numbers Chevrolet produced back in the sixties are  largely
meaningless.  The fact of the matter is it would probably be  nice to have a
couple of stock 140's so as to get an average and then go  from there with
the big boys. 



Hi Cliff,
Well, I see your point. But the Chev 140 engine test is official data  
professionally taken under controlled conditions. Chassis dynos are known to
be  
subject to many more uncontrolled variables than the Chev engine dynos 
were.  Heck, why don't you just take the Chev data and subtract 20% for 
drivetrain  losses for your baseline. That will be close enough and about as

accurate as  doing an engine test. We already know a lot about the 140 hp
engine. 
But what  will a tired stock 140 test tell you? If you freshen the test 
engine, what do  you do and where do you stop? 
 
 What we don't know about are the engines I previously mentioned. No  data 
exists on these as far as I know. If you are bound to test "stock" engines,

then please consider these.
 
Regards,
Bob Helt
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