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Why is there a second bolt tapped into oil pan?

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Old Jan 16, 2018 | 01:18 PM
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Why is there a second bolt tapped into oil pan?

Why would PO have tapped a bolt into the oil pan. This is a few inches above the drain plug which is perfectly fine? The tapped bolt appears as it's leaking as well.



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Old Jan 16, 2018 | 01:27 PM
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Re: Why is there a second bolt tapped into oil pan?

Turbo drain.
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Old Jan 16, 2018 | 01:30 PM
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Re: Why is there a second bolt tapped into oil pan?

Originally Posted by Drew
Turbo drain.
Thanks! So I'm guess the PO removed the turbo and/or line. What is the best way to seal this up? I was thinking something like this sealant and finding the right plug?



Last edited by rottweiler68; Jan 16, 2018 at 02:12 PM.
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Old Jan 16, 2018 | 03:18 PM
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Re: Why is there a second bolt tapped into oil pan?

The right plug and a copper crush washer would work fine. Or some thread sealant
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Old Jan 16, 2018 | 03:21 PM
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Re: Why is there a second bolt tapped into oil pan?

Originally Posted by midias
The right plug and a copper crush washer would work fine. Or some thread sealant
Cool, thanks!
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Old Jan 20, 2018 | 02:57 AM
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Re: Why is there a second bolt tapped into oil pan?

Hard to see much from that pic. Looks like a big mess to me. Replace the pan.

GD
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Old Jan 25, 2018 | 11:53 AM
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Re: Why is there a second bolt tapped into oil pan?

It's the oil level sensor hole that has been deleted.
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Old Jan 25, 2018 | 01:21 PM
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Re: Why is there a second bolt tapped into oil pan?

Originally Posted by JA411
It's the oil level sensor hole that has been deleted.
Hmmm, that would have been non stock that was added and then removed?
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Old Jan 25, 2018 | 01:45 PM
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Re: Why is there a second bolt tapped into oil pan?

Low oil sensors were used on other GM V8 applications, but can't remember seeing one in a thirdgen. Seems that the threads in those pans used a more substantial boss than just tapping the pan.

Doesn't really matter what it was for, it's not doing anything now. I'd be damn tempted to wait til the next oil change, and while it's drained, I'd clean the snot out of the area, clean, clean, clean it again. Get it as clean as possible, find a plug that will fit right, even if that means going up a size, or using a self tapping drain plug, and then use an auto-rated liquid thread sealant, and run the plug in snug.

This is one case where I'd probably consider cleaning the area as clean as possible, and seal the area with regular JBWeld. Not the JBKwik or whatever they want to call it, but the 24hr set variety. It's not a structural joint, the goal is to end the seepage. It'd be a lot faster than changing the pan, and doesn't cost much. Worst case you might still have to change the pan later.
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Old Jan 25, 2018 | 01:50 PM
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From: Illinois
Car: '89 Iroc
Engine: 383 TPI
Transmission: Built 700R4
Axle/Gears: 9 Bolt - 3.45
Re: Why is there a second bolt tapped into oil pan?

Originally Posted by Drew
Low oil sensors were used on other GM V8 applications, but can't remember seeing one in a thirdgen. Seems that the threads in those pans used a more substantial boss than just tapping the pan.

Doesn't really matter what it was for, it's not doing anything now. I'd be damn tempted to wait til the next oil change, and while it's drained, I'd clean the snot out of the area, clean, clean, clean it again. Get it as clean as possible, find a plug that will fit right, even if that means going up a size, or using a self tapping drain plug, and then use an auto-rated liquid thread sealant, and run the plug in snug.

This is one case where I'd probably consider cleaning the area as clean as possible, and seal the area with regular JBWeld. Not the JBKwik or whatever they want to call it, but the 24hr set variety. It's not a structural joint, the goal is to end the seepage. It'd be a lot faster than changing the pan, and doesn't cost much. Worst case you might still have to change the pan later.
That's my plan just to clean it and seal it up, it's actually barely leaking but want it sealed all the way. I was just curious as I had never seen these level sensors before.
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