<VV> Setting the Timing

[Harry Yarnell]

Put some 87 octane in it and you'll hear it...
No, it's not like the submarine movie sound of 'pinging', more like marbles 
rattling in a tin can.

Harry Yarnell
Perryman Garage and Orphanage
hyarnell1 at earthlink.net
----- Original Message ----- 
From: "Stephen Upham" <contactsmu at sbcglobal.net>
To: <virtualvairs at corvair.org>
Sent: Tuesday, June 01, 2010 3:15 AM
Subject: <VV> Setting the Timing


>I know you said to not answer, but I just can't help myself: 93 oct.
> This is just another reason to love Texas!  I thought it was pretty
> clear, but let me use the correct terminology; the timing scale goes
> to 16 degrees advance (18 if you count the end of the aluminum scale -
> no number here; just an educated guess).
> The next question is : How does one know that detonation is
> occurring?  I  that believe it is a sound (pinging ?), but I have
> never experienced it.  This is just another reason to love Texas.  Is
> the pinging like the old submarine movies only speeded up?  The
> members of NTCA and I have spent considerable time and effort (and
> money on my part) rebuilding this engine, and the last thing that I
> need to do is something that would jeopardize that. I really need to
> know what I'm looking for (detonation).  I've done enough stupid
> mistakes on this project to fill a small novel.  I really don't want
> to start on the next chapter just yet.
>
> BTW  What is it about my name....???
> Just saying....
>
> StephEn
>
> P.S. Bob, Chuck and Harry... Thanks for all you have done this time
> and countless times in the past.  I took the car out tonight and had a
> lot of fun just enjoying the unique driving pleasure that only a great
> running Corvair can offer.
>
>
>
> One more  quick question.  The Corvair Basics says to set the timing at
> 24 adv. on a 110 with PG and AC when you have a timing mark that
> indicates that.  I do have a PG with AC (no compressor as of yet  -
> need more $$$).  The head on the right is probably original,  the one
> on the left is most likely correct as it had to be replaced  but was
> done so by a CORSA member and mechanic.  Should I set  it at 14 (PG no
> AC) or use my advance on the timing light as the  indicator only goes
> to 16 degrees
>
> Stephen  U
>
>
>
> Stephan,
> Set the timing as far advanced as the engine will tolerate without
> detonating. All the specs you mention relate to higher octane being
> available  when
> written. What octane gas are you using? (no need to answer)
>
> It isn't clear from what you said whether your engine has the timing
> scale
> with a max of 16 or 24 degrees, but in either case I'd suggest 14 for a
> setting.  And as you might already know, the 24 deg setting was for
> engines
> that were  claimed to be 110 hp but actually had 95 hp heads.
> Regards,
> Bob Helt
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