VS 57 ISSUES

[studequest]

I have a supercharged Avanti Engine in my 1955 Conestoga

Automatic Transmission

Pertronix

Edlebrock Marine Carburetor

Electric and original fuel pump

Air conditioning

I was having surging issues

My Boost Pressur is 3 to 4

I was making very good vaccum

My fuel pressure was about 10

My mechanic felt the issue was the choke plate and he removed it

He said the car ran much better

I have not driven it

I am concerned about no choke and I am wondering about the logic of this approach

(I can see that if the choke did not disengage, I would essentially be running a 2 barrel carb

I should also add that I have a kick down solenoid which is not functioning and I have been advised by John Erb and Craig Conley to just leave it out of the circuit and not replace it

Your thoughts??

Thanks Keith

[mfg]

Nice setup!!...but could you describe in a bit more detail when the surging occurs, engine temp, etc?

[studequest]

Surging occurs as you step into it

no problems with overheating

no problems with starting with the choke

I describe it as missing

Plugs checked, gaps correct no fouling of plugs

there is but 15,000 miles on this engine rebuild

[mfg]

I'd cut clean at about 50mph after accelerating hard and read the plugs...that would give you an indication (too rich or too lean) of what's going on inside the cylinders under acceleration.

Definitely sounds like a carb issue.

[studequest]

I think we agree on that

my issue was how people felt about removing the choke plate and having no choke

My mechanic friends who build all kind of cars - cobras and other vintage cars - say choke is not necessary and they don't use it

If really pushed they offer me to put in a cable choke rather than the electronic thermostatic spring type we see in the 50-s 60s cars

My 53 stude has a cable operated choke

comments

[mfg]

Since you live in a warm climate year round, (I think!), you really don't need an operating choke...it can be fixed wide open.

[studequest]

This is what I am being told

keith