Re: Centrifugal Advance

[Randy Wilson <randy@taylor.infi.net>]

>> Was this part of the distributor common to all v-12's?
>
>In hearing from Jag owners about this problem, it appears to have been a 
>problem way back on the E-type MkIII.  I suppose it's some sort of sign of 
>British stubbornness that it wasn't corrected sooner; 1971-88 is a long time 
>to remain in denial about such a fundamental problem with such horrendous 
>consequences.


From what I've seen the gummy advance problem is unique to the V-12 HE
distributor. Earlier distributors also had a problem with siezing, but
these galled from a total lack of lubrication. The 25D* series was
good for this after 15 or 20 years of never being oiled.

>
>>  All 6 cyl.s?
>
>The Jag six surely had a centrifugal until the advent of electronics, but it 
>most certainly was not the same unit as the V-12.  Since I only concern 
>myself with V-12's, I dunno if they suffered the same problem.  Offhand, it 


The 25D6 had the dry galling mentioned above. The 45D*6 seems to be fairly
immune. The 45D was used in SII and SIII XJ's in both point and electronic
forms.

> -- Kirbert      |     If anything is to be accomplished,
>                 |     some rules must be broken.
>                 |          - Palm's Postulate


   Randy K. Wilson
     randy@taylor.infi.net

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References:

• Re: Centrifugal Advance
• From: "Kirbert" <palmk@mailer.gadcomm.net>

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