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Mystery leak remains a mystery?

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Old Jul 13, 2022 | 08:52 PM
  #1  
HeavyChevy383's Avatar
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Mystery leak remains a mystery?

I got a strange leak at the rear of my engine. Happens right near the sending unit. I first thought it was the sending unit, which it was partially (got a new one and some of the leaking stopped, but it still leaks a lot. I then thought it was the intake, took it off, resealed everything perfectly, new distributor seal as well and just resealed the valve covers, and its still leaking. Now I am thinking the last thing it could possibly be is the standoff/npt fitting for the oil sending unit that goes into the block. Only thing is I can't for the life of me find one for sale. None of my local auto stores had one, nor did my local hardware store. I need a 90 degree fitting at the end.

Anyone know where I can get one? If this doesn't fix the leak I will be at a loss for words.

Engine info:
383 stroker,
rpm air gap intake,
edelbrock 6061 heads
msd 6a
msd pro billet dizzy
flowtech headers
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Old Jul 13, 2022 | 09:31 PM
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Komet's Avatar
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From: WA
Car: 1989 IROC-Z
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt / 2.77 Posi
Re: Mystery leak remains a mystery?

Did you use hi temp thread sealant on the npt fitting? Summit has a lot of fittings and adapter type stuff. I've also gotten fittings off ebay.
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Old Jul 13, 2022 | 09:36 PM
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HeavyChevy383's Avatar
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Re: Mystery leak remains a mystery?

Originally Posted by Komet
Did you use hi temp thread sealant on the npt fitting? Summit has a lot of fittings and adapter type stuff. I've also gotten fittings off ebay.
yes i did put thread sealant on it. The thing was overtightened like crazy so idk if that had something to do with it failing.

What did u search on summit? Brass npt fittings? 1/8 inch is what I need right?
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