weber progressive, cam Options

[blauer]

I'm new to the porsche game. I have a 73 with a 1.7l. It all was in a box. I've had experience with Type 1 bug motors but not 4. I have bought the weber progressive carb kit, planning on ordering the svda 034 from hotspark. Is the camshaft a big issue since it was an injected motor? Any info will help. Thanks.

[Spoke]

NARP = Not A Real Porsche

About the center progressive, my 71 1.7L started life with me with a center progressive. It mostly ran good although in the winter it could be hard to start after running for a while because the carb would cool in the winter's cold temps and then I was trying to start a warm engine with the electric choke closed.

Besides that, it ran all the time. I couldn't run wide open throttle since all it did was blow out black smoke (inefficient combustion).

I bought another engine with a set of IDF40 Webers and put them on. The difference was eye-opening. Although a little harder to start from cold since it didn't have a choke, it ran all the time like the progressive.

The big difference was the more complete combustion under WOT. Now I was able to run WOT and not blow out a cloud of unburned hydrocarbons. The engine pulled much much harder (That's what she said) than with the progressive.

Bottom line if I were buying a carb, I would definitely stay away from the progressive and go with a pair of dual carbs. Not only do you have very short runners but each cylinder has its own carb situated directly above the cylinder intake.