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optimizing a distributor curve, how best to do? (type IV engine upright conversion - )

I assume an original factory-installed distrib designed for use with fuel injection would have a different 'curve' than one that would ideally be used with a (newly carb-converted) 'type 4' engine. I'm also guessing the curve would be different from autostick to 4 speed cars/transporters distrib's that are converted for use with 4 four speed trannies. so 'there's some variables' ay?

is it just a simple matter of changing a vacuum can? or mechanical advance springs? or both? or using an entirely different distributor, perhaps? what's the best way to achieve the optimim (or 'more near optimum') curve for the at the lowest bucks invested?

interests are in performance -and- fuel efficiency (assuing they're not mutually exclusive)....or, more precisely, how does one get the MOST suitable curve for the LEAST bucks...

thanks in advance for pointers :-)

(anticipate using a upright converted 2.0 in a 4 spd ghia here...)

Reply to
dave
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Not a direct answer to your question, but there were "hundreds" of distrib models used on VW engines. For specs:

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Yes, the curve was altered by changing the vac can and the spring and where the vac was taken off the carb plus the advance provided by the centrifugal advance (on distribs that had both).

If you really want to get into it, do a GOOGLE for: distributor + advance + curves Lot of good discussion out there.

Speedy Jim

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Reply to
Speedy Jim

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