Quote:
Originally Posted by lippy
I was at the Bay Area club breakfast at Alice's this morning and Randy R and a few others were interested in my solution to fuel percolation so I thought I'd post it.
When I got my car on the road about a month ago one of the first problems I had to contend with was fuel percolation due to a combination of crappy CA fuel and heat soak in a hot engine bay. Once I stopped the car hot, I had a heck of a time restarting because the fuel would boil in the bowls once fuel and air flow stopped. The solution was straightforward and effective: I first added a phenolic spacer between the carb and intake manifold, and that pretty much solved the problem. Since hood clearance is an issue for me and many others, I found just one 0.25" spacer (most of the others were thicker). That was all I needed. After that, just for some extra margin, I insulated the fuel lines going from the regulator to the carb (AN -6), and also a couple feet of the fuel line that feeds the regulator (AN -8) and passes near the headers.
The parts are:
Phenolic spacer: Jomar 5025 Jomar 5025 Jomar Phenolic Carburetor Spacers - Free Shipping on All Orders @ JEGS
Insulation: McMaster-Carr McMaster-Carr Good for both AN -6 and -8
PM me if you have any questions. |
I agree with lippy 150% that route was traveled by me a couple of years ago with this same problem and yes the phenolic spacer worked as well as insulating the fuel lines, the turkey pan was already installed when I got the car. I also added water wetter to the coolant that lowered the water temperature quite significantly.