CV torque setting?
Turbo Mini Forums

My new cv joint has arrived today, it's from eBay brand new and half the price of mini suppliers, with a 2 year warranty I thought id give it a try.
But my question is when I was looking around for one I found on mini spares website it says that cv joints with a single split pin hole need to be tightend to 193 lb ft instead of the 150 of the other twin split pin hole type. Why does the cv type change the torque setting, as I thought the torque setting was relevant to the wheel bearing?
But when I was at college all them years ago I was tought not to torque up taper roller bearings but to tighten them up as tight as possible and then to back off to the split pin hole? I know this completely contradicts all info available but I thought I would just throw it out there for people's opinion.
Thanks for any advice Wez

one day boost will be mine!

The torque setting difference is so that you don't pull the end off the CV joint as with 2 holes drilled thru its tensile strength is reduced.

You do torque the bearings up, this is because they are a matched pair with a precise sized spacer in between the inner races that holds them apart. This controls the overall end float when you tighten up. If there were no spacer there, then torquing the joint up would lock up the bearing due to the axial force applied.

Cheers for that,
So the way I was tought to do them would suit a bearing without the central spacer fitted, I presume.

one day boost will be mine!

This double hole torque thing has worried me for years - and the standard answer (assumed to be correct) is the one given by Tom.

However...

By the time either torque figure is reached, the nut is well past the holes in the end of the CV, so my little brian (after a hard day of solid mechanics and engineering science at college) is struggling to understand how it will pull the end off the CV.

I've always wondered if the two figures are quoted the wrong way round.
With a single hole you potentially have to turn the nut further to get the hole to line up with the castellation - 60° max as opposed to a twelfth of a turn - 30° with a two hole CV.
Torquing to 193 ftlb and then a further 60° is a colossal amount of torque compared to 150 and a tweak.

Metric is for people who can't do fractions.