I've just started taking the back end off my car for an upgrade and found that the four bolts holding the rear bearing carriers onto the rear hubs were not as tight as they should have been shall we say! These are the only things holding the back wheels on!

Just a word of warning, Torque them up proper and use threadlock!

I've only done ~600 miles since I built it!

Cheers

Check the nuts under the mushroom inserts if you have them as well......we nearly lost our bec engine supplier to that one. he would have been scared to death!

The old "spanner check". Should be on everyone's "to do" list.
It's not just that things can come loose - sometimes you forget to tighten them up! I try to never put a nut on "finger tight" but the odd one always slips through the net!
Cheers
Bob C

When 1st building my car i took some good advice from another builder who marked all the nuts that were torqued up with a permanent red marker,there have been a few of us who have been caught out by this after only a few hundred miles

Luckily i think its mostly down to bushes settling in on wishbones,rear hub carrier must have made you go a bit cold northy.I put longer bolts on my rear hub carriers and locked up the other side with nuts,i thought it might have been an SVA issue but glad i did it now.

I like that Idea - I'll stick a marker in the box with the torque wrench.
Bob C

My 'belt and braces' solution will be to use longer bolts which will enable me to get locknuts onto the inside of the upright.

Mick

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Originally posted by bob
When 1st building my car i took some good advice from another builder who marked all the nuts that were torqued up with a permanent red marker,there have been a few of us who have been caught out by this after only a few hundred miles

Luckily i think its mostly down to bushes settling in on wishbones,rear hub carrier must have made you go a bit cold northy.I put longer bolts on my rear hub carriers and locked up the other side with nuts,i thought it might have been an SVA issue but glad i did it now.

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quote:

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Originally posted by stevebubs

quote:

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Originally posted by bob
When 1st building my car i took some good advice from another builder who marked all the nuts that were torqued up with a permanent red marker,there have been a few of us who have been caught out by this after only a few hundred miles

Luckily i think its mostly down to bushes settling in on wishbones,rear hub carrier must have made you go a bit cold northy.I put longer bolts on my rear hub carriers and locked up the other side with nuts,i thought it might have been an SVA issue but glad i did it now.

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Another common tip is to use paint rather than a marker. Mark a line on the bolt and the component immediately behind it. If the component bolt the starts coming loose, you can see at a glance.

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on all our racecars we have always applied torque seal

due to time constraints on some race weekends ( multiple race format ) it is not always possible to check all fixings so this allows a quick visual inspection

torque seal ( thick gloopy type of paint ) this is placed accross the nyloc and threads of the bolt

when something comes undone it cracks the paint and falls off
available in loads of bright colours quite expensive though

regards

marc