Gearbox explosion - gripper LSD inside

[poziek]

The gearbox was right after putting everything together. After couple of laps at the track day i did downshift from 3 to 2 gear and kaboom happened.

The mechanic at the shop says that 3 bolts went loose. You can see it at the pic.

Questions:

1. Does anyone of you know what Nm these bolts should be tighten?

2. Should mechanic use any loctite glue with these ?

 

[NorthloopCup]

I don't know the official torque figure, but I've tightened them before with my snap on impact gun and used loctite. I can try and find out if there's a specific torque figure for you.

I've got that section of gearbox available as well btw.

 

[EVOgone]

They have to have loctite or they will come loose if heavy use......And i alway use new bolts when my LSD is rebuilt.

 

[poziek]

I don't know the official torque figure, but I've tightened them before with my snap on impact gun and used loctite. I can try and find out if there's a specific torque figure for you.

I've got that section of gearbox available as well btw.

Thanks Mark, I do have a spare gearbox. I'm in a dilemma right know whether to buy new CW from gripper or use stock CW from my old gearbox - there is some kind of adapter needed afaik ?

They have to have loctite or they will come loose if heavy use......And i alway use new bolts when my LSD is rebuilt.

Do you know if gripper recommends to use loctite ? Becouse if they do it means that the shop which was puting LSD into the gearbox made a huge mistake...

I still don't know if the threads in these loosen bolts are fine...

 

[NorthloopCup]

Thanks Mark, I do have a spare gearbox. I'm in a dilemma right know whether to buy new CW from gripper or use stock CW from my old gearbox - there is some kind of adapter needed afaik ?

Yes mate there's an adapter plate that is welded to the original crownwheel and this converts them to a bolt on item rather than press fit.
I know they currently don't have any of the adapter plates in stock though, but will have some soon. I'm with evogone as well, they need loctite even if gripper don't recommend it. It's just a bit of insurance.

 

[GodSpeed]

Why not use bolts that can be lock wired?