Author Topic: red car conundrum.  (Read 470 times)

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Offline TexasT

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red car conundrum.
« on: August 16 2018, 08:22:29 PM »
Al righty then, we have a little problem with the "red" car. You will be glad to know the engine swap in the malibu is well and the wife has been driving it. Can't find the leak in the ac so I'm kinda thinking it is the compressor itself. Not sure but the dye stuff seems to be all over it in spots so I'm not sure. Had it blowing cold a few nights ago but by the next afternoon we had lost pressure. Crazy.

Anyway. The new to me water pump housing on the red car came without a nipple for the heater hose. I didn't even notice until o went to hook that hose up. It was suggested that I hit the wrecking yard and see i I could find a piece that goes inline with the radiator hose with a nipple on it. I night a couple of those when doing the Malibu (gotta find em now) so I thought I could do that. I got a 1/2"npt x 3/4" barb 90* fitting ordered. I have a 1/2"npt tap. So I need to drill the hole. I have a 23/32" bit but the engineers handbook calls for a 45/64" hole. Is this going to pose a problem if I make the hole  a 1/64" too big? I thought not as the bit is like $15 and I already have the bigger one.

Your thoughts?
Thanks for the input.
Rich

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Offline earlbrown

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Re: red car conundrum.
« Reply #1 on: August 16 2018, 10:14:47 PM »
With pipe thread you can be way off on the top drill.    You can always go smaller if you're worried about it.  The tap is tapered.


Not to mention, a 64th is only 31 thousandths.  So that's an extra 15thou of meat missing.  Not really a big deal at all.
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Offline TexasT

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Re: red car conundrum.
« Reply #2 on: August 16 2018, 10:37:59 PM »
Kinda what I thought but wanted to get some other opinions. I guess ill order another thing for the rad hose. Can't find the ones I have. Looked for an hour so I spent enough time on it.

I just want the defrost to work when it gets cooler out.
Rich

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Offline Forzfed

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Re: red car conundrum.
« Reply #3 on: August 17 2018, 08:13:55 PM »
That Earl is more than pornography you know?