Back again with carb questions....
a few months ago this board helped with getting my 3x1 carbs setup as the end ones as dumpers which works good, but i'm still messing around with drivability problems. Just received a pack of jets so now i can play again. I was reading the Tech Tips on running Multiple Rochesters for the third or fourth time. And he stated that the spacers were needed? Running an offy 3x1 with rochester bc's if that helps. Just wondering if i need to start looking for a few.

Thanks
Jeff

you didn't say if your intake was heated, or not, but, on exhaust-heated intakes, the spacers help prevent carburetor gas perculation, when you turn your engine off.

i have run homemade gaskets on aluminum, multi-carb intakes that were water-heated with no sign of perculation. unheated intakes should not require the thick insulating spacer/gaskets, either.

however, it's been my experience that driveability suffers from an unheated intake.

yah, the intake is heated, guess i'll be looking for some....

thanks

www.fillingstation.com carry them as well as some vendors on EBay.

You shold have the spacers or you may run into perculation.

The Problem is caused by volatility of modern fuel. The gasoline is heated by the latent heat of the engine, and percolates the fuel from the bowl into the throttle area, forming a mixture that is too rich to fire.

I had this problem -not as usual - at hot starting but even on long Autobahn trips during summer.

When we drove down to Italy it starts running ultra rich till an state to absolute undrivable.

I blamed it on everything but the kitchen sink and it took quite a while to find out what it was.

I usualy ask some "old hands" but in this case they couldn´t help because the gas was way better back than so they never run in this kind of problems, caused by modern fuels.

..live and learn :rolleyes:

Frank

Thanks,
anyone got about 3 of them?

Jeff

One more question, since it's a progressive linkage, would I run the center one correct, and block off the vacume passage on the end one's?

Thanks again,
Jeff