I am cleaning up an older Weiand 7545 X-celerator single plane intake tonight and right after the first coat of paint I noticed a hole in the side of the intake. It is on the outside a couple of inches below the carb mounting flange, and just below the runner. A light from the inside of the intake does not shine through to the outside hole. So I would like to plug up the hole and finish cleaning the intake. But can I use JB weld and push it into the hole or should I use some sealant to plug it up? Then when I am done cleaning out all of the mounting holes I was just going to put another coat of paint and then keep it.

Note: The hole is about the diameter of a #2 pencil lead for reference and about 1/8" deep.

What do you think?
Thanks

j b it !

It sounds like you don't have a hole, you have a pit. JB Weld is an acceptable repair.

Have it welded up by a pro shop
No worry about the filler falling out from heating up and shrinking down when the manifold cools down after running the motor

I have an Edelbrock Performer intake that I blocked the exhaust cross over using JB weld back in the 90's. Still there, still working. Not sure it is an issue.

I know that welding would be the best solution but for as small as it is, I will shove some JB in it tonight.

Thank you everyone!

if you want to be sure the JB stays put, use a center punch and make a couple dimples on the hole edge, forcing the hole to deform inward a tad.
when the JB sets up, the inward deformation will make sure the plug can't come out.
also, there are a couple of different formulas of JB available now, and i think i saw a high temperature package at my local ACE hardware a couple weeks ago when looking for something else.

Moparx:
Good idea on dimpling the outside.
My current JB is the regular type, so I will see if I can pickup one of the higher temp packs tonight.

Thanks!

I would just thread them and put a small allen headed screw in them.

that with a little red loctite will work as well.

Place a rubber-tipped blow gun nozzle over the pits; if you can't hear air escaping into the manifold, just go ahead and paint it, no further action needed.

wasn't that pad originally intended for a tube to connect to an old style choke mechanism ?
if i'm remembering right, some old carbs used the crossover port to pass exhaust into and out of the choke.
some tubes didn't get direct exhaust passage, but the holes were close to breaking through the casting, which allowed the quick transfer of heat to the tube, which was generally 1/4" od copper.
if i have this wrong, could someone please correct me ? or at least clarify what i'm trying to say.

Exactly

The two holes on the pad are not the problem, look to the right of the pad and you will see the “pit”.
Thanks and I found the high temp JB at my local ACE.
Now you guys have me thinking as to where those two holes go.
Thanks!

Looks like an older intake where they were cast a bit different then they are today.

I collect old semi rare intakes and here is an example where there was a thin spot and they welded it.


So if someone can get a bead to take in the runner like this id suspect yours can be welded as well.

I myself am trying to figure a good way to "seal" the pores on this intake, to keep the org. look but use on a day 2 build.

Ive seen these type repaired all my life, id get it welded if I could.

This ha e some weld it up.so you do not have some Red Green epoxy fall off inside the intake it could ruin your dayj.

JB will not fall out.
Doug

In the picture, you are talking about the little dimple at the base of the runner to the right? You'll be fine with what ever you decide to do. Even nothing.

""you are talking about the little dimple at the base of the runner to the right""
This is correct.

The two holes on the pad are a small blind tapped hole and a drill that is about 1/4" deep.

I used some high temp JB on the dimple last night and then tonight it will get another coat of paint then it is going on the shelf for later.

Thank you everyone!

You guys are really over-thinking this, again.