Hot Rod Forum : Hotrodders Bulletin Board

Hot Rod Forum : Hotrodders Bulletin Board (
-   Transmission - Rearend (
-   -   Over tightened transmission mount bolt (

0trbo4myCHEVUICK 10-09-2012 06:06 PM

Over tightened transmission mount bolt
well i was tightening my TH400 mount to the crossmember and "pop" the bolt falls loose. shreds of metal in the threads. has anyone ever used a tap and die set on a trans case? can i sleeve it? Im trying very hard not to freak out right now ive been dealing with this swap for 3 months now and i just want to drive my friggin truck.
Do i tap it to a bigger size bolt?

poncho62 10-09-2012 06:13 PM

You can put a Heli-coil in it....or, find another tail housing for the trans

adantessr 10-09-2012 06:15 PM

You can buy a thread insert kit for the bolt size that you need from your local parts store. The kit will come with a drill bit, a tap, thread inserts and an insert installer. You will then be able to re-install the original bolt after cleaning the aluminum out of the threads. Be careful not to drill to deep. The bit will want to grab in aluminum. A trick that I use is to grind the leading edge of the drill bit flat so that it scrapes the aluminum off instead of cutting it.

SSedan64 10-10-2012 10:35 AM

The Heli-Coil or Thread-Sert will be much stronger than Tapping to the next larger Bolt size. Either option will work tho'.

0trbo4myCHEVUICK 10-10-2012 01:38 PM

Instead of the heli-coil I ended up threading in a longer bolt with a nut up top. Didnt think there was going to be enough clearance for the nut but what do you know it fits perfectly..

All times are GMT -6. The time now is 03:00 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.