Drilled into the block - Team Camaro Tech
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post #1 of 9 (permalink) Old Jan 18th, 16, 04:24 PM Thread Starter
 
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Drilled into the block

I'm on the process of replacing the oil pan gasket on a 350 in a 1980 z28. One of the pan bolts broke. I was drilling out the bolt and all the sudden I was getting an antifreeze shower. Ya, I drilled too far. Is the engine toast? Can I put a new bolt in with some sealant and be ok? Any help/advice would be great.


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post #2 of 9 (permalink) Old Jan 18th, 16, 04:51 PM
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Mark
 
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Re: Drilled into the block

I would get the JB Weld out and jam it in to match the depth of the other holes and use Permatex 2 on those bolt threads. Clean the area with brake clean and air compress it dry before using JB Weld.

Or

You could tap the complete hole then cut the head off an extra pan bolt, shorten it and carve a slot in it to fit a straight blade screw driver then using Permatex 2 on the threads, thread that baby in to take up the extra space.

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post #3 of 9 (permalink) Old Jan 18th, 16, 06:24 PM
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Al
 
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Re: Drilled into the block

I'd drill and tap for the next bigger bolt and use thread sealant on it as you suggested. It will be fine. The engine is literally full of holes into the water jacket where sealant is used - 34 head bolts, water pump bolts, rocker studs etc - one more won't hurt a thing.


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post #4 of 9 (permalink) Old Jan 18th, 16, 06:36 PM
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Re: Drilled into the block

Tap it and stud that hole using Permatex high tack or a Loc-tite thread sealant on the threads. This way it doesn't get disturbed every time the pan has to come off, you just remove the nut on that stud.

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post #5 of 9 (permalink) Old Jan 18th, 16, 07:42 PM
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Re: Drilled into the block

Call Shafiroff and order a 434/700 Big Dawg and be done with it
http://www.shafiroff.com/chevy-crate...34-bigdawg.php

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post #6 of 9 (permalink) Old Jan 19th, 16, 06:21 AM
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Re: Drilled into the block

Quote:
Originally Posted by copter View Post
Call Shafiroff and order a 434/700 Big Dawg and be done with it
http://www.shafiroff.com/chevy-crate...34-bigdawg.php
What a great solution. Either fix it for .50 or spend $14,500. Hmm, that's a tough one.

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post #7 of 9 (permalink) Old Jan 19th, 16, 07:03 AM
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Re: Drilled into the block

Quote:
Originally Posted by COPO View Post
What a great solution. Either fix it for .50 or spend $14,500. Hmm, that's a tough one.
Nah. It's LS swap time!

...maybe I should break a bolt or something...

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post #8 of 9 (permalink) Old Jan 19th, 16, 09:00 PM Thread Starter
 
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Re: Drilled into the block

Thanks for the help! I would like to swap the stock engine for an LS, 383 stroker, or even a Big Dawg although 700 hp seems like a bit too much. But I have three teenage boys to feed and two mortgages to pay so it's not in the budget, yet.
Thanks, again.


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post #9 of 9 (permalink) Old Jan 19th, 16, 11:06 PM
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Re: Drilled into the block

Just put some blue loctite on it, clean out the hole and put it back together. Give it 24 hours to cure and you're good to go. I had the same thing on a bolt hole drilled into a water jacket. I tried all the sealers, tapes etc, but pressure made it leak. With the loctite it's perfect.
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