<VV> no need for an "advance" timing light

[djtcz at comcast.net]

http://www.msdignition.com/dist_62.htm
"Remember, the Total timing is just as critical, if not more, than the initial timing ......."

 

Best to confirm the TDC mark is right, and put a witness mark across the damper halves as a check for slippage in the future.

Dan Timberlake

-------------- Original message -------------- 
> 
> Message: 3 
> Date: Thu, 10 May 2007 17:44:45 EDT 
> From: Pitts10ch at aol.com 
> Subject: 140 pinging update and results/ smelly car 
> To: virtualvairs at corvair.org 
> Message-ID: 
> Content-Type: text/plain; charset="US-ASCII" 
> 
> Ok Gents here it is: 
> 
> I took the lower shrouds off of the Corsa today and went driving for a 
> spell. It turns out that it is hard to duplicate the pinging just by myself 
> with 
> the shrouds off. However, I checked the timing at idle once she was warmed 
> up. It showed 8 degrees at idle. As I throttled it up it mechanically 
> advanced up to a max of about the mid 20's. Then with the vacuum reinstalled 
> it 
> goes more than that......... into the unknown zone. I have a rudimentary 
> timing light so that's the best I can do right now. I went ahead and backed 
> her 
> down 2 degrees and the idle speed dropped a bit. I test drove and found no 
> problems except a lack of power when the hammers are all the way down and the 
> speed gets beyond 60 or so. By the way, the harmonic balancer is still 
> intact. I have a new Billet Clarks version. Anybody think changing is a good 
> idea? The highest temp I saw on an 83 degree New England day was barely 300 
> degrees on a long hill climb. And.....to all those Corsa stink mongers out 
> there, taking the lower shrouds off really cut back on the post drive stink. I 
> would guess that the engine is quite a bit cooler and doesn't boil off as much 
> fuel to cause the stink. No guarantees with that advice. I will probably 
> change the Dbtr springs and check the accuracy of the vacuum advance in the 
> near future. I'll let you know how it goes. 
> 
> Regards, 
> 
> Chris Hand 
> 
> 
> 
> 
>