Throttle Body Metal Tubing Coolant Connections

[Marccus]

I need to replace those small metal tubing connections on the throttle body (and elsewhere where they are used for coolant and for PCV from the valve cover) because they are pitted to the point whre they show pinhole leaks and some are just disentegrating into dust.

How do you remove these connections from the throttle body?

Just yank them out?!

Do they screw out?

Do you have to be very careful when removing them as I believe the throttle body and the valve covers are made of a very weak material - *** metal (a low grade aluminum / zinc) alloy?

Where can you get replacement or do you have to fabricate your own?

If the latter, I guess you must find out a way to put a ridge on the tubing as the original has, so the hose can be clamped on without sliding off.

How do you install the new tubing connections?
Do you have to "glue" them in or are they anchored in place with jsut a snug slip fit?

Any suggestions appreciated.

 

[jthomas68]

They are not removable.Fwiw,if you end up getting a new tb,they are MTX and ATX spcific,they aren`t interchangable.The material is a very cheap casting,the valve covers are cast aluminum.

 

[Marccus]

Bummer.

I can't believe they aren't removable. Well I believe YOU, but I can't believe they would make the thing that way.

So I have to buy a completely new throttle body, even though I completely refurbished the old one and it looks and works great just for two small stinking tubing connections?

Well, that's "modern" manufacturing for you.

But the valve covers on my '89 are not aluminum, but *** metal.

The intake manifold IS aluminum, though.

Well, that's on my '89 anyways.

I know because I found a junked '89 and stripped the engine, cleaned and stripped the intake manifold and valve covers and painted them with high temperature engine enamel from Hirsch Auto (actually its the same stuff made by Randolph Company and is used to paint jet aircraft engines).

It's rated to over 600 deg F, but is difficult to work with and takes forever to dry and harden.

Well, thanks for the info.

I'll see if I can repair the tubing connections with some metal repair epoxy - Devcon makes some in aluminum, stainless steel, and titanium.

The problem is that it comes in one pound packages and I need about 1/100 of that!

 

[SHOZ123]

Bypass the coolant lines and put a plug over the PCV line.

 

[Off Road SHO]

Buy some JB weld. Mix up in small batches and spread on the tubes in thin layers. Let harden between applications. After two or three coats have hardened up, sand smooth with 180 grit paper.

And I'd be willing to bet the old ones could be removed with a heat wrench or drill bit. Make sure you have new male hose barbs ready to go to replace the old ones. Probably have to epoxy them in though. Good luck.

Tom