John
My Chrysler uses a dual point distributor. I put a small piece of
cardboad in one set of points, set it the specified dwell angle, then
move the cardboad over to the second set.
I've done it that way since 1964, and it seems pretty reliable. I
never worry about primary or secondary.
I understand the purpose of dual points on a V8 -because with 8 lobes,
the point gap gets small to get the correct dwell angle and its
therefore very small gap.
With 4 lobes, it never made much sense to me, but racers say it does.
Good luck! Mike Moore
59TR3A
62 Chrysler 300H
On Apr 1, 2009, at 11:57 AM, Lee&John Howard wrote:
> I'm at the point of starting up my rebuilt engine in my new TR4, which
> came with Webers and dual-point Mallory. I downloaded instructions for
> setting the dwell and they say to set the "primary" points first,
> those that open first in the engine's revolution. I don't see how to
> determine which is first - looking down at the dizzy it looks both
> point sets are at the same relative place on their cams at the same
> time. How do I tell which is "primary?" . Does it matter?
>
> Thanks in advance. More questions to come, I'm sure, as I try to start
> up and become familiar with the Webers.
>
> John Howard
> 64 TR4 daily runner (almost for sale!)
> 65 TR4 almost ready
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