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Free Door Removal
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Discussion Starter · #1 ·
I got a quick question? Is there a reason that the threaded washer for the drainplug in the oil pan is welded on the inside of the pan instead of the outside? Wouldn't this leave a 1/4 inch of oil in the bottom and the potential timing chain parts, other metal?? Doesnt seem like the best design to me so I went ahead and fixed by welding a nut on the outside, cutting the old one out with a mill and welding a plate in place, looks damn near like a factory job. Just wondering if I am going to run in to some issues, and why the oil pan was done up like this.


Joe
 

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Planned obsolescence.
You just realized why GM did that all those years ago.
Smart man..........and people thought they were getting their oil changed. :rolleyes:
That thing was welded in or soldered in?
 

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Free Door Removal
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Discussion Starter · #3 ·
I believe it was spot welded using a spot welding machine as I could find no real evidence of welding, soldering, or anything haha. My big chisel wouldnt move it when persuaded with a small sledge. Threw it on an end mill and cut the sheet metal it was attached too and it fell free. Just gotta test it for leaks now and I should be good to go. I will post pics when I get my camera back.

Joe
 

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87bigcut said:
I believe it was spot welded using a spot welding machine as I could find no real evidence of welding, soldering, or anything haha. My big chisel wouldnt move it when persuaded with a small sledge. Threw it on an end mill and cut the sheet metal it was attached too and it fell free. Just gotta test it for leaks now and I should be good to go. I will post pics when I get my camera back.

Joe
I'll be doing one in the next while.
I'll have to check on the spot weld thing.
I don't remember seeing any evidence of spot welding on the bottom of the pan,that's why I figured it was silver soldered like the rads. :dunno:
 

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Turbocharged BrunoStachel
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Turbo Bill and I noticed that the nut has a horizontal hole drilled through it to help drain the last few drops of oil from the bottom of the pan. This was on an old 14 bolt pan I had. I'm assuming the 20 bolts use the same nut. When I get a chance I'll have to check the 20 bolts I have and see if the nuts are all welded with the hole pointing in a certian direction. I used to jack up the car more on one side so I could drain all that was possible from the pan.
 

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Resident Idiot
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Like Eric said there is a hole in the bottom side of the nut inside the pan allowing the oil to drain out as if the nut wasn't there. It was most likely put inside the pan like that for ground clearance reasons. If you bottomed out with the nut on the outside of the pan, it could tear it clean off the pan.
 

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Iheartporn
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I just looked at my GN pan and no hole. (except the one I drilled a while back :) )
 

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Free Door Removal
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Discussion Starter · #8 ·
If the RJC racing deep pan fits good, I should be just fine.

Can a piece of nylon gear fit through the hole??

I find it hard to believe that all of the crap in the pan would find its way to that hole but its all good I guess. My drainplug is 5/8 too so I get the uber-fast drain haha.

:yup:

Joe
 

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Free Door Removal
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Discussion Starter · #9 ·
Also just checked my stock nut and there was no hole. So all you cats with your pans off either weld a nut on the outside or drill some holes around it. :cheers:

Joe
 
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