<VV> Looking for advice - GB running weirdly.

[tony underwood]

Have you checked the distributor mechanical advance curve?   As in, does 
it drift around?   Likewise, have you tried driving it with the vacuum 
advance disconnected?   I'm thinking maybe distributor issues... just 
throwing it out there.


What do you mean by "tip-in"?


Between you and me, I don't really trust Pertronics stuff, seen too many 
of them dead on peoples' garage shelves.   Then again, there's hoards of 
Corvair engines out there running the streets with the factory 
points/coil ignition system and doing just fine.



tony..


On 5/17/2025 4:36 PM, Andy Kinzelman via VirtualVairs wrote:
> To all,A local guy has joined the Corvair fraternity - 63 Greenbrier. He was having drivability issues; at tip-in the engine would fall flat on it's face.  He's replaced the carbs, plugs, and wires - all from Clark's.  The van had a Pertronics looking unit; but it does not have full 12 volts (I don't know offhand whether its a I or II).  It started easily and ran smoothly.
> Today we replaced the leaking balance tube hoses and the the base of the leaking fuel pump.  Went through the carb initial set-up and balancing.
> Timing (steel pulley) was very advanced (guessing 25° BTDC); reset to 13° BTDC. Engine now much harder to start; so reset to about 20°BTDC.
> While driving, it still has the same tip-in issue.  I don't think it's the carbs (because it's acting the same way it did with the old carbs).
> I'm unsure how to proceed - anybody have any recommendations?Thanks,Andy K.Wisconsin
>
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