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Mongo01tj 07-15-2020 03:02 PM

Missing bolt
 
I just bought my 01 tj and I'm missing the bolt on the transmission directly across from the oil drain plug. I'm admittedly terminology deficient. I would load a picture but I haven't figured that out yet.

Can someone tell me what size it is and where to get a replacement please?

Thank you!

BlueFl.Wrangler 07-15-2020 04:17 PM

pretty much need more info / photo of where it goes

mukluk 07-15-2020 07:36 PM

It'd also help if you would fill out your vehicle profile so we knew what transmission we're talking about.

Mongo01tj 07-15-2020 09:23 PM

I can't post pics yet. I added a pic to my gallery of the bolt. I don't know which transmission I've got. Think it's a n nv3550.

Pic is not my jeep.

mukluk 07-15-2020 09:54 PM

The bolt shown in your gallery is one of the clutch dust cover plate to bellhousing bolts. Those come in two sizes, so it'll either be an M8x2.12x16 or an M12x1.75x50. If the one missing is the very bottom one circled in the picture, that's the M8 bolt.

Mongo01tj 07-16-2020 07:37 AM

Thank you!!

Mongo01tj 07-16-2020 07:59 AM

Of course, it's a discontinued part. Any idea where to find one? Google is pretty empty...

Dr. Internet 07-16-2020 08:14 AM

For all of your fastener needs:


McMaster-Carr


https://www.mcmaster.com/screws/hex-...hread-size~m8/

mukluk 07-16-2020 08:25 AM

A quick internet search turned up this bolt which seems to match the size and thread pitch: https://www.gmpartsgiant.com/parts/g...-11508154.html

BlueFl.Wrangler 07-16-2020 08:31 AM

your local hardware store should have them

mukluk 07-16-2020 08:42 AM

M8x2.12 is not a common thread pitch that you're likely to find in a hardware store. Normally you'll only find M8x1.0 or M8x1.25 bolts.

Mongo01tj 07-16-2020 11:49 AM

It's a discontinued part from Chrysler. After further research, the GM part is self tapping. Next call will be to a salvage yard. Do I even need it? Uhg?

2jhanna 07-16-2020 12:07 PM

Maybe I'm off-base here, but since there's nothing life/death about this bolt, plus the bell housing being aluminum, and the hole is a through-hole, how bout running the closest tap though there and appropriate size bolt.

Sure beats running all over town, mail order, and junk yard.

Edit, I just realized I typed mail order, I guess I'm old.

mukluk 07-16-2020 12:29 PM

Quote:

Originally Posted by 2jhanna (Post 41022465)
Maybe I'm off-base here, but since there's nothing life/death about this bolt, plus the bell housing being aluminum, and the hole is a through-hole, how bout running the closest tap though there and appropriate size bolt.

Sure beats running all over town, mail order, and junk yard.

Edit, I just realized I typed mail order, I guess I'm old.

How many box tops are needed plus postage and handling? >:)

Mongo01tj 07-16-2020 01:23 PM

Quote:

Originally Posted by 2jhanna (Post 41022465)
Maybe I'm off-base here, but since there's nothing life/death about this bolt, plus the bell housing being aluminum, and the hole is a through-hole, how bout running the closest tap though there and appropriate size bolt.

Sure beats running all over town, mail order, and junk yard.

Edit, I just realized I typed mail order, I guess I'm old.

It's not a through-hole. The two on either side are, but the lower one isn't. Threads into the housing. I agree, not sure how important it is, but I am seeing a seep of fluid from that spot. I've cleaned everything I can reach to determine if it's the rear main seal, which is my suspicion.

2jhanna 07-16-2020 03:00 PM

Quote:

Originally Posted by Mongo01tj (Post 41022525)
It's not a through-hole. The two on either side are, but the lower one isn't. Threads into the housing. I agree, not sure how important it is, but I am seeing a seep of fluid from that spot. I've cleaned everything I can reach to determine if it's the rear main seal, which is my suspicion.

Sorry, you are correct, not a through hole. I just finished my rear main seal and "have been" it that area very recently. Either way, I don't think it's real picky if you did want to try a tap, even if you did have to make a trough hole.

Good luck on your leak correcting. For the past several months I've been all around and under mine fixing leaks.

2jhanna 07-16-2020 03:42 PM

1 Attachment(s)
Mongo, I find it hard to believe that it's a "special", and like I said above, I've been in this area a lot lately. I just took my screw out, it's not Machine threads, rather, more like a lag bolt, or large sheet metal bolt.

I compared it to a 5/16 lag bolt in my hardware bin. Almost identical, my lag bolt threads were just a little coarser.

Dale M. 07-17-2020 08:31 AM

Generally metric bolts and nuts are pretty much standard and available in most auto parts and hardware stores..... IF needed to get online.

http://belmetric.com

Dale

Mongo01tj 07-19-2020 08:18 AM

2j, thank you. My leak appears to be coming from inside the cover...I have a feeling this is going to exceed my abilities.


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