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Stripped Bellhousing Bolt: 4spd Muncie by Jfrost
Started on: 02-18-2015 11:09 PM
Replies: 2 (76 views)
Last post by: tebailey on 02-19-2015 09:38 AM
Jfrost
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Report this Post02-18-2015 11:09 PM Click Here to See the Profile for JfrostSend a Private Message to JfrostEdit/Delete MessageReply w/QuoteDirect Link to This Post
When bolting my L67 to the trans the bottom most bellhousing bolt, near the rear exhaust manifold and passenger side axle shaft (threads are in trans, not engine), kept spinning once fully seated. I removed the bolt and discovered threads from the trans portion were on the bolt, broken loose from inside. I got a 12mm x 1.75 thread tap to see if I could chase the threads but the bolt still spins when fully seated.

I have a couple of ideas on how to fix the situation and wanted to get others input.

1. Drill out the hole and retap to the next larger bolt/thread (not sure what size that would be).

2. Use a heli-coil kit (never used one before

3. Some type of locking washer/nut to allow the stock bolt to tighten up fully.

The threads that came out are the inner most ones, they were on the bottom of the bolt threads when I removed it. Any help would be appreciated!

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Project L67 Fiero

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IXSLR8
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Report this Post02-18-2015 11:27 PM Click Here to See the Profile for IXSLR8Click Here to Email IXSLR8Send a Private Message to IXSLR8Edit/Delete MessageReply w/QuoteDirect Link to This Post
Either of those approaches will work, that is, a Helicoil insert or drill and tap for a larger bolt.

Just make sure you use a bolt that will access all the threads for maximum support.
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tebailey
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Report this Post02-19-2015 09:38 AM Click Here to See the Profile for tebaileyClick Here to Email tebaileySend a Private Message to tebaileyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Helicoils work great, I've had to use them thousands of times. 2 tips on using them, install with red non-removable lock-tite and run a tap into it after the lock-tite has set.
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