diff housing gaskets or silicon ??
Turbo Mini Forums

Just wondering whats best to use as when I pulled my s/c box apart it was clear siliconed together but I'm sure I have some gaskets somewhere

Metro turbo weekend driver,Mini turbo in the making again!

Some boxes use gaskets, some use silicone.
DO NOT fit gaskets a a housing that uses silicone as the extra clearence will cause the diff output bearings to spin in the housing.

If your unsure what was there originaly, then measurement with an internal mic is the only way to be 100% certain. Other wise just replace like with like.

you can measure with feelers too iirc


Alex

AlexF

hmm yeah, i been looking into this recently



there seems no definative date.

anyone know that the bearing 'preload' is supposed to be?

if bearing is same as bolted up hole it will spin. so holes gotta be smaller than bearing, question is, how much?

Sooperdooperturbocooperexpertengineering!

hmmmm, i never knew that. Learn something everyday u know....

I believe that if it's held on with bolts, it's RTV / Silicon sealer. If it's studs and nuts, it's almost always gaskets - but there was an overlap I'm sure!

If unsure - do the internal measurements with it clamped up tight with no gasket.

Edited by TurboDave16V on 5th Jul, 2005.

Anyone know what the measurements should be?

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985

It should be round. If you fit gaskets and dont need them it will measure oval.

Assuming thats what you mean!

As above, just compare vertical to horizontal readings with it bolted up without the diff in.

If you want an actual measurement, read the code on a bearing and google it. SKF etc. all have bearing catalogues online which will give you the bearing outside diameter and the housing should be the same, maybe a thou less to give a bit of nip, but certainly not bigger.

The early stud/gasket vs. later bolt/RTV mentioned by TD isn't foolproof because some people (like me) don't like bolts tightened in aluminium so use studs/nuts on the later RTV type casings anyway.

Schrödinger's cat - so which one am I ???

Cheers chaps

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985