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Hypothetical Distributor Question

To: Triumph List <triumphs@autox.team.net>
Subject: Hypothetical Distributor Question
From: Kurtis Jones <tr4driver@gmail.com>
Date: Sun, 18 Dec 2005 11:29:10 -0600
What potential damage/harm would there be in replacing worn Lucas 25D4
(40795) distributor with a Lucas 25D4 (41271) distributor on a
temporary basis?  I know the advance curves are different, but other
than not running at optimum time, do I run the risk damaging anything
in doing this?

Here is a comparison of the advance curves:

40795
--------
RPM   ADVANCE
  350           1
  600           6
1200          10

41271
--------
RPM  ADVANCE
  300          2
1200        9.5
2150         15

Am I correct that with the 41271 distributor that the timing would be
over advanced (from factory spec anyway) at higher RPMs by 5 degrees? 
Is that enough to cause significant problems?

Thanks in advance (no pun intended <grin>)!

--
Kurtis Jones
Russellville, Arkansas
1963 TR4 - CT19389L
1959 AH Bugeye - AN5L23250
www.geocities.com/tr4_1963


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