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JJC

Distributor

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403 is a DM2, the 783 and 795 are both 25D type.  They all physically fit a TR 4 cyl, the difference between the 25Ds is the mechanical advance curve (means in detail the springs and the 'end stop' for the advance). I cant comment on the DM2 never seen this prehistoric type...

Edited by ctc77965o

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If you know what advance curve you want I am sure Martin Jay can make it work. Or you could just suck it n see, assuming it's in good order.

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Martin can definitely tailor a 25D to your engine spec.

Edited by iain

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Unless you can check the advance curve yourself, I would strongly suggest you ask Martin Jay (Distributor Doctor) to check it out. If it is giving you too much advance  you could end up blowing the engine!

I didn't blow my engine, but got close too it!

Geoff

 

 

 

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Yes agree Martin is the authority. Given the Snap On timing light I guess I can measure the advance. But at the moment the weights seem somewhat stiff so there’s a bit more investigation needed. JJC

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