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Rivnuts & Brake Tees
IainL - 13/5/10 at 06:32 AM

I understand from previous posts that using rivnuts to secure brake tees is an issue during IVA, due to no locking device for the bolt.

Therefore would it be ok to use a tab washer to lock the bolt, instead of drilling through the chassis and using a nyloc?

Daddylonglegs - 13/5/10 at 06:50 AM

From the way I read that thread it would be best to go for the bolt/nyloc.

I had the same problem and thought I'd err on the side of caution so drilled right through.

Better safe than sorry, I'd be pretty gutted if I got to the IVA and failed on something so small

JB

blakep82 - 13/5/10 at 06:57 AM

weld a bolt on? thats how id do it... wouldn't want a big hole to weaken the tube and let water in

daviep - 13/5/10 at 07:10 AM

quote:
Originally posted by blakep82
weld a bolt on? thats how id do it... wouldn't want a big hole to weaken the tube and let water in


Good idea.

If you drill right through then you can't get the bolt properly tight as the tube crushhes unless you weld in a spacer.

Ivan - 13/5/10 at 07:26 AM

Maybe a dumb question but why must brake tees be bolted down - on my Cobra the tees had no fascility to bolt down so just held in place with P-clamps on the pipes near the tee.

After 20 odd years of use there is no sign of proplems (touch wood).

There is minimal force on them to cause movement and the flaring is enough to hold the pipes in so don't fully understand the need for bolting them.

Can someone please correct me on this.

Danozeman - 13/5/10 at 07:34 AM

Theres alot of production cars with t's just i mid air and not fixed.

blakep82 - 13/5/10 at 07:47 AM

i haven't got any photos, but going to weld some M5 bolts to some of that perforated steel strips you can get, then the strip is jubilee clipped to the axle (on my car) so the T can be bolted down, and the brake hoses P clipped

franky - 13/5/10 at 08:22 AM

you can use cable tie bases that are riveted on.

britishtrident - 13/5/10 at 10:45 AM

The simplest blatantly visibly solution is a locking tab --- just a strip of aluminium allow sheet with a single 6mm hole. I would however recommend the pipes be clipped close to the Tee.


The inspector failing cars on this is clearly has a bee in his bonnet.

Normally in this situation a spring or star washer or Loctite would be the tradditional locking option ---- tens millions of cars were built that had the brake caliper and master cylinder bolts locked with nothing more than plain nuts and spring washers and I never heard of one one falling off yet.



[Edited on 13/5/10 by britishtrident]

PeteS2k - 13/5/10 at 01:48 PM

IVA passed here. Brake tees secured using rivnuts, no tab, spring or other locking washers.

No questions asked at all.

rusty nuts - 13/5/10 at 07:21 PM

V W Golf has the brake tees held by the brake pipes in the engine bay