--Poly BMEP is approx. 164 and is an efficient chamber and does not require as much “total” advance as does our LA brethren.
Depending on cam/compression and build design; Stroker or stock stroke; we run anywhere from a low of 26 adv. To 34 adv. We have seen excellent power at around 30-32 total advance on average.
Gary Pavlovich
From: 'Thomas Hauschild' via The 1962 to 1965 Mopar Mail List Clubhouse <1962to1965mopars@xxxxxxxxxxxxxxxx>
Sent: Monday, May 16, 2022 10:32 PM
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Subject: Re: maximum centrifugal advance on a Poly engine?
Thanks for the repost!
I already have to correct myself, if the cylinder burns faster, you won't need more advance... please ignore that...
Hoping for some opinions,
best regards,
Thomas
Am Di., 17. Mai 2022 um 02:27 Uhr schrieb <62-65-mail-list-club@xxxxxxxxxxx>:
I am reposting this question from the "65 B-body motor swaps/ Trannies" thread and zeroing in on a Poly question so it
is not missed. That's a good question and there are at least two Poly gurus subscribed who may know the answer.
Others too! :)
Thanks,
Gary H.
62-65 Admin.
> May I chime in here...
> What are the general ideas about maximum centrifugal advance on a
> poly?
> Usually I hear about 34° max, but 'everyone' is using a wedge chamber
> (LA or B), I suppose the poly chamber is designed to burn with one
> flame front and theoretically could burn up the whole cylinder filling
> faster than if the flame front would need a reflection or two. Does
> this result in potential for a higher maximum centrifugal advance? Or
> ist this just a dream coefficient that won't have any real world
> effect?
> What are the maximum advances you are using in your polys?
>
> Best regards,
> Thomas
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