Stripped clutch slave bell housing threads.
#1
Junior Member
Thread Starter
Join Date: Mar 2013
Location: Flower Mound, TX
Posts: 241
Total Cats: 27
Stripped clutch slave bell housing threads.
[amateur mechanic alert on]
I stripped my clutch slave threads in the aluminum bell housing.
What are the options to fix it:
1. Helicoil - drill, tap and insert the helicoil.
+ permanent solution
+ reversible
2. Loctite thread repair kit
- is it strong enough
3. Epoxy
+ permanent
- irreversible
What fastener to use:
1. New Bolts -
- still uses soft aluminum every time the clutch slave comes off.
2. Stud/nut - using red Loctite or epoxy to permanently set the stud.
+ doesn't disturb the aluminum
+ if 1 nut comes off, the clutch slave stays in place.
I'm torn between:
1. Helicoil and stud w/ red loctite,
- this requires removing the transmission, on jack stands, to drill and tap.
2. Epoxy and studs.
+ this doesn't require removing the transmission
- will it be strong enough for a track only car. (ACT HD clutch)
[amateur mechanic alert off]
The real question:
Will epoxy and stud work?
Transmission removal and re-install is a big job alone on jack stands for an old guy.
I stripped my clutch slave threads in the aluminum bell housing.
What are the options to fix it:
1. Helicoil - drill, tap and insert the helicoil.
+ permanent solution
+ reversible
2. Loctite thread repair kit
- is it strong enough
3. Epoxy
+ permanent
- irreversible
What fastener to use:
1. New Bolts -
- still uses soft aluminum every time the clutch slave comes off.
2. Stud/nut - using red Loctite or epoxy to permanently set the stud.
+ doesn't disturb the aluminum
+ if 1 nut comes off, the clutch slave stays in place.
I'm torn between:
1. Helicoil and stud w/ red loctite,
- this requires removing the transmission, on jack stands, to drill and tap.
2. Epoxy and studs.
+ this doesn't require removing the transmission
- will it be strong enough for a track only car. (ACT HD clutch)
[amateur mechanic alert off]
The real question:
Will epoxy and stud work?
Transmission removal and re-install is a big job alone on jack stands for an old guy.
#6
Former Vendor
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Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
I've dealt with a transmission where some junkyard "mechanic" stripped one of the holes. The holes are tapped deeper than what is needed. You may be able to drill out damaged threads, then thread a longer bolt (like a 25 or 30mm) into the hole and catch enough good thread to make it work.
#7
Junior Member
Thread Starter
Join Date: Mar 2013
Location: Flower Mound, TX
Posts: 241
Total Cats: 27
I got studs and found the holes are already longer than the stock bolts used. So there are still good threads a little deeper. I gently screwed the studs in. I used the epoxy, but I probably could have gotten by with Red Loctite.
#8
Thread necro with helpful information for other future hamfisted modders. There is an exhaust stud replacement kit for Nissan vehicles in the correct size to correct this failure. Studs are M8-1.25 x 38mm, which gives good engagement to the extra thread depth in the house, and enough additional protruding for a flange nut.
Part number is Dorman 03109, and cost me $5 at O'Reilly.
https://www.oreillyauto.com/detail/c...kit/mtm0/03109
It also shows up under a different part number at Rock Auto for a bit cheaper if you're able to plan ahead for your fail.
https://www.rockauto.com/en/moreinfo...sn=723&jsn=723
Part number is Dorman 03109, and cost me $5 at O'Reilly.
https://www.oreillyauto.com/detail/c...kit/mtm0/03109
It also shows up under a different part number at Rock Auto for a bit cheaper if you're able to plan ahead for your fail.
https://www.rockauto.com/en/moreinfo...sn=723&jsn=723
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