VAC Project: Trouble w/Air Intake tube

I need some advice. No matter how I try, the brackets for the A/C pipe don't seem to line up. If I put one on each side of the exhaust elbow bosses, it kicks the top of the pipe to the right. I can get close if I put both on the same side of the bosses (outside of the tractor?!?).

Any ideas? I'd like the a/c pipe to stand plumb.

Also, I saw many where the exhaust heat would burn of the paint, so I thought I'd try using heat resistant paint up to the curve of the pipe. If it holds up I think it looks kind of sharp.

Frank

I don't think the VAC's had a rubber joint in the air tube. Mine is an "S" curve, or maybe a split "S" from the can on up, one piece. That's what really complicates things.

Frank

Frank and All,

Getting in on this conversation a bit late...been out of town. For what it's worth this is a pic of the clamp on my '46 which shows it having the rib such at the one you are questioning...this one is the original...my Dad wouldn't throw anything away that could be patched! As you can see I need to find a source for a new one.

One thing I noticed different on your '50 is the shape of the exhaust manifold itself which may suggest there was a difference in clamps. Your manifold bows out away from the block whereas mine is straight across the top...may not mean anything. (I'll have to work on the this picture thing as I this is way too small..sorry!)

Jim Shephard

Yes, I have the later manifold on this '50, but it had one that looked like yours (the early type). I went with the later manifold as they are the only ones you can find repro elbows for.

If you could e-mail me a bigger version of that picture, I'd sure appreciate it! I'm still trying to figure out if I have the correct tube as well. The combination of a wrong "S" curve and a too long or too short in length bracket will really make it hard to get the stack plumb. Wow, the things that give you trouble....

Frank
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Brandon

My Industrial John Deere website
John Deere Diesels
The LaGrange Engine Club

On the bracket, it is (using dial calipers) 2 1/8" center to center vertical between holes, and 3.650" (a bit more than 3 5/8") in the horizontal. Maybe where the curves to cup around the pipes are where the difference between SC and VAC is.

Oy....

I think I might have to do just that. I can probably modify what I have until it gets plumb. I always seem to end up having to compromise the stuff that you can see when it's finished?!?

Ha!

Frank

-Schotte

are a true friend to offer a deal like that to me.....

I verklempt and overcome.....but I'd take that deal if you had a set of VAC plates!

Ha!

Mine is 3" x 6-1/4".

Clamp straddles boss on elb.

Bolt holes are 2-1/4" & 3-1/2" ballpark per Mike measurement.

It does not have the strengthener (bead?) in the center nor is it shown in the parts book.

I have a short tube (VAO) so don't know how a VAC would line up.

Joe

First...Thanks!, next,

A-h-h-h-h-h-h!

Anyone have a dimension of bolt to bolt so I can measure what I have?

Frank

I agree with Tim, it looks like an SC bracket to me. I don't have any VAC books to confirm or deny what they used on the VA series... but since it was made at a different plant than the SC- maybe they AIN'T the same!

Here's my SC manifold:

Here's a not-so-great shot of the bracket itself:

According to my handy-dandy measuring tape (not to NASA standards)... the bolt dimensions (for the SC bracket) are as follows so you can check against yours:

Centerline left to right = 3-5/8"

Centerline up to down = 2-1/4"

Hope this helps you figure it out, -Schotte

The overall size of the SC bracket is 6-1/4" long X 3" high.

-Schotte