Thread: Engine: 2.1 Carb B21A: - PCV System with aftermarket Webers Help please.
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Old Sep 11th, 2019, 21:07   #14
classicswede
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Quote:
Originally Posted by Clan View Post
well that stand to reason but a new question arises .. Why fit a programmed ignition system ?? Unless there have been other changes in the engine such as performance camshaft . :-)

I would keep those webers if this is the case ...
1) the factory dizzy can not use the vacuum advance/retard so the curve is now wrong
2) even if you had one without a vac connection the curve is now wrong for the change in air flow
3) modern fuel does not burn the same
4) logic would say with fitting webers you would also have gone for a cam with more lift/duration and a increase in CR further changing the burn
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