300/440/550 Drilling for Duel Cooling

[Pwgsx]

You can’t really see it, but the fitting is really loose because the wall is so thin there are not many threads for it to hold. I would feel better if it were welded somehow. Probably have to grind it down too on the inside, because I don’t think you want it protruding into the pump. How do you guys get this to work?? The 550 pump does not have a thick piece of metal where it could be tapped OR did I just jack this one up?? Its on a 86 550 btw. Thanks

 

[Dustin Mustangs]

:starwars: :laugh2:

Those fittings are available in 1/4" npt as well so you could still rethread it for one of those. However, I think I'd just use some of this and call it a day:

 

[vitalikol]

Normally second one going on opposite side of first one , but maybe 550 pump different

 

[Pwgsx]

i am using the stock bildge line so thats why its on the same side, but other than that, i might try the jb weld.

 

[SQUARE JOEL!!!]

Pipe dope!!! If you ran the tap pretty far in it will be a little loose. A 1/8 NPT tap would give tapered, hence the T, threads.

Like previously mentioned, fitting placement is optimal on the opposite side.