C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Oil Drain stripped...

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Old Oct 13, 2004 | 02:11 AM
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From: Lakeport CA
Default Oil Drain stripped...

I can't believe it... after 11 years of changing oil on my '90 the damn drain plug just stripped out the threads in the pan!!!

I do NOT have time to install a new pan in the near future. As a temp fix, I tapped it to 1/4 pipe & stuck in a brass plug. But I don't like it nor trust it.

Anyone have any better ideas??
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Old Oct 13, 2004 | 02:14 AM
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Well I don't know how bad you screwed it up putting a pipe plug in there but there are oversized, self-tapping plugs available at some parts stores for such a situation. Not the best fix, but they usually work for a time.
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Old Oct 13, 2004 | 02:16 AM
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1/4 pipe is almost exactly the same size as the 1/2 20 of the std drain plug. Just a tiny big bigger & of course tapered thread...


By the way, if/when I replace the pan, what are thoughts on larger pans? I don't drag race so road race style would be where I would lean.


Thanks.

Last edited by Trog; Oct 13, 2004 at 02:20 AM.
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Old Oct 13, 2004 | 08:59 AM
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with the KID, but I don't think you need a bigger pan-unless you are going to the track, on another note, I'd just take the pan in and have it repaired, no big deal.Just a PIA
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Old Oct 13, 2004 | 10:01 AM
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Originally Posted by rick lambert
with the KID, but I don't think you need a bigger pan-unless you are going to the track, on another note, I'd just take the pan in and have it repaired, no big deal.Just a PIA


I've got an aftermarket plug that's been on for years. Works great and no problems. It has a selftapping thread.

Art
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Old Oct 13, 2004 | 10:03 AM
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Had one on my S-10 blazer for 200,000 miles,(self tapping) worked like a champ, it never leaked either.
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Old Oct 13, 2004 | 10:04 AM
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Most parts houses have the repair plugs.If thats the biggest
oops you ever have ...your a lucky guy!!
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Old Oct 14, 2004 | 06:42 AM
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I once used a self tapping plug on a 289 and it lasted unitl I installed a 302, 20 years ago and its probably still good.
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Old Oct 14, 2004 | 10:45 AM
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Thanks guys, picked up the selftaping 1/2-20 +1 OS (Over size). Went right in, torqued to 18Ft lbs w/ out stripping & I'm headed downstairs now to check for leaks before heading to work.

Anyone on west coast going to watch the C5R at Laguna this weekend? We are headed down in the AM.
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