Intake exhaust heat
 

My '39 Merc aluminum intake has an exhaust heat port (was all filled with carbon) that ends at base of carb. I just got my wonderfully restored carb back from CharlieNY and it came with a paper base gasket (same as what was there to begin with) that has a very small hole over this hole which is roughly 1/4" in size. Is this as it should be? Would post pics 'cept I'm heading off to work:(.

Thanks!

Shoebox

Re: Intake exhaust heat
 

If the carb is a 94 type that is not compatible with the manifold with the hole. I understand a stromberg (97) is the correct type carb for that manifold. Are you sure the manifold is the correct one for the car/engine?

Mart.

Re: Intake exhaust heat
 

Shoe,
As Mart mentioned your intake was meant for a Stromberg. The 'heat hole'
in the intake being plugged solid with carbon made it sort of compatible with a 94.
I'm pretty sure you'll risk wasting the power valve in the 94 if any exhaust gas gets
thru the carbon blockade.
I have a few asbestos/steel gaskets which would in all probability keep
the PV protected using this intake. Leave the carbon plug as is.
E mail me at [email protected] so we stay on the same page !
Charlie ny

Re: Intake exhaust heat
 

This aluminum intake has me really confused. It has been on the car a long time (thought it was original). On the bottom of intake the cast in tag has a date of 1-18-39, yet it is for Stromberg 97s which came along later??

I'd be interested in anyone's theories :)

Shoebox

Re: Intake exhaust heat
 

Anybody got any thoughts on this ???????

Shoebox

Re: Intake exhaust heat
 

Stromburg cam first ?? and was discontuned in 37....Henry went to the Holly 94...in 38/39..... OLD....BILL....I WAS THERE

Re: Intake exhaust heat
 

OK,......... guess I had that switched around, as far as which carb came first. Thanks OLD BILL.

Shoebox

Re: Intake exhaust heat
 

I guess they were still casting early (97) type manifolds for replacement in 1939, like the one you have. Aswell as casting the current for 1939 parts.
Makes sense to me, it's only a couple of years out of sync.
Martin.

Re: Intake exhaust heat
 

Just for your interest.
I was thumbing through Mac Hills pickup truck 1932-1952 book. Came across an interesting pic on page 80. It shows the engine, transmission, frame and steering column of a 1939 pickup. This pic is dated 9-20-38. Obviously a 24 stud engine, looks like 1939 transmission and hydraulic brakes. All what we expect given the date. Apparently a factory photo. The steering column lower has a protective paper wrap.
The bit that I found interesting, the intake manifold is aluminium with the low fuel pump perch. It is the same type fitted to circa 1935, where the forward and backward intake runners sit above and below each other. (Unlike later types where they sit side by side). All the intake manifolds I've seen of this circa 1935 type have the exhaust heat hole in the carb mounting face.
This being a 1939 frame has quite clearly a C&G/Ford/Holley 94 sat on the intake!
As has been discussed, this isn't compatible, the power valve would get burnt.
But their it is in a Ford pic!
So I'd like to know when Ford started using a hole less intake. The book shows a proper (without hole) 94 intake on a 1942 pickup. What was used in 1940?
Did Ford just rely on a asbestos gasket to seal of the hole before '42?
Mr shoebox, it's possible that intake was on there from new, judging by the above info.
Sorry for long post, hope someone finds it interesting.
Martin.

Re: Intake exhaust heat
 

I'd drill and tap the hole and fit either a pipe thread plug or a sawn off bolt to seal it. 94 carb should be ok then.

Interesting points made by Martin above.

Mart.

Re: Intake exhaust heat
 

Scooder,
Your info is MOST interesting. This car was purchased from the original owner by my dad (with MY paper route money) in 1968. Lack of garage space caused us to sell it several years later to a car collector friend of the family. I reacquired it this past September. This intake was on the car in '68, based on what I saw when removing it, I believe it to be original. I learned the carb on it is a generic replacement 94, not original. Leaves me wondering if it had a Stromberg originally or a mismatched (to the manifold) 94 as seen in the picture mentioned by Scooder.

Shoebox