Carter Carburetor Gasket Question

[Gerald C.]

I am installing my carb on my newly rebuilt 327/300 hp motor in my 1963. When I look at placing the gaskets (fiber, thick plastic spacer and thin metal gaskets) I see that the fiber and the plastic spacer gaskets have grooves that should match (I thought) the bottom on the carb.

While the channels on the bottom of the carb are in the rear of the carb, the plastic spacer gasket conforms with the shape of the intake manifold and those fit going towards the front of the carb.

Should the rear channels on the carb be different than the grooves in the gaskets which face front???

Thanks

[Timothy B.]

Re: Carter Carburetor Gasket Question

Gerald,

To answer your question, yes the rear channels are different than the gasket cut outs. Place the gaskets the way you described so the gasket heat slot faces front just like the thick spacer shows. The top stainless baffle should only have the four holes to match the venturi diameter and the grooves in the bottom of the carburetor are vacuum passages.

The arrangment is intake manifold, gasket, phenolic insulating spacer, stainless baffle then carburetor. Look at this thread to show the gaskets. Also, check out the picture showing the freeze plugs used to block the hot slot in the intake manifold. Better do this if you have not already because with ethonal gasoline you are sure to have problems if you don't keep the heat off the carburetor base.

https://www.forums.ncrs.org/showthread.php?t=72114

[Gerald C.]

Re: Carter Carburetor Gasket Question

Tim,

Thanks for the prompt response. At least I now know, I'm not senile!

Jerry

[Gerald C.]

Re: Carter Carburetor Gasket Question

Tim,

One other thing. The studs are too short to take the gaskets and the nuts. What is the simplest way to remove the studs? Liquid wrench or is there another method?

Thanks,

Jerry

[Timothy B.]

Re: Carter Carburetor Gasket Question

Jerry,

Tape the four holes with duct tape so there is no accident, (don't ask me how I know this is important). Double nut the studs one at a time and remove. I can't remember the stud length, the info may be in the archives.

[Stuart F.]

Re: Carter Carburetor Gasket Question

The stud length is a baffler for me. I use (on an L-76) two base gaskets and the phenolic spacer in a sandwich which should not be all that different from the stock L-75 stack, yet the 2.00" stud is too short, and a 2-1/2" is too long. I also use flat washers under the nuts, but even then I have to back the studs out of the manifold slightly to get the correct length. I hate to do that.

Hope I didn't add any confusion here. Sorry.

Stu Fox

[Gerald C.]

Re: Carter Carburetor Gasket Question

Tim

So that I understand....I double nut the studs and turn the nuts clockwise? The stud end in the manifold is a reverse thread???

Thanks

Jerry


Stu,

Can this stud length be this difficult if we are staying stock on the parts???

Jerry

[Timothy B.]

Re: Carter Carburetor Gasket Question

Jerry,

Run a nut down on the stud then another nut on top of that and lock them together with two wrenches. Turn the lower nut counterclockwise against the top nut and the stud should unscrew from the manifold. The studs are threaded in a normal manner meaning clockwise = tighten and counterclockwise = loosen.

[Gerald C.]

Re: Carter Carburetor Gasket Question

Tim

Thanks!!!!

Jerry

[Stuart F.]

Re: Carter Carburetor Gasket Question

Jerry;

If you stay with your original studs, one might assume they should be of the correct length. I should have kept my L-76 experience out of this thread. Sorry. However, removing studs from a Cast Iron manifold may present some additional problems with rust as opposed to the L-76 which has an aluminum manifold.

Using two nuts locked together, or as we used to say JAM nuts, is an old time proven method of simple stud removal. Pretty straight forward. They do make a tool which is just a longnut with a threaded plug on one end that you tighten onto the end of the stud - something like the old lock nuts used on the valve rocker arms. I have one, but have yet to use it as you usually have the carb hold down nuts handy and a couple of like sized wrenches. The tool needs a screw driver to lock the end plug. So, take your choice; two wrenches or one wrench with a screw driver

Stu Fox

[Gerald C.]

Re: Carter Carburetor Gasket Question

The two nut method worked!! Now I have to buy the correct studs

Thanks