Devastator's upgrade

[Sneaks]

Sneaks and I will beat you numb with a wet noodle if we find out about bondo usage...

If you read that quickly it sounds just plain wrong.


What sort of place is this, anyway?

Well, you're here...

[BAJA-IT]

it's a Happy Place!!!

































Now let's keep it that way!!!

[73AZ]

Sneaks and I will beat you numb with a wet noodle if we find out about bondo usage...

If you read that quickly it sounds just plain wrong.


What sort of place is this, anyway?

Well, you're here...

Touche.....

[Devastator]

WOW! That's the most attention my build thread has gotten since I started it.

[Devastator]

Has anyone ever heard of cutting an o-ring groove in a 930 CV joint to keep it from leaking CV grease when it gets hot?

[Rbob]

You have more followers than the "Pied Piper". Are you ready for your annual "Dunes" trip?

[Sneaks]

Ok, my official vote is don't cover them. I like the raw simplicity of it.

[73AZ]

Has anyone ever heard of cutting an o-ring groove in a 930 CV joint to keep it from leaking CV grease when it gets hot?

I have never heard of it.

Is leaking grease that big of an issue with 930s?

[Ol'fogasaurus]

Devastator, if it was done, wouldn't the groove have to be ground in? I know that the outer spacer in an IRS, the one with the tapered end, had a groove in the small area that went against the outer bearing's inner race that accepted an "O-ring" but they stopped doing it. I wonder if an "O-ring" would really work that well. I am sure that the German engineers must have considered it, they are pretty through after all.

Lee

[Devastator]

You have more followers than the "Pied Piper". Are you ready for your annual "Dunes" trip?

Hi Bob!
I'm just happy someeone is looking at those pictures I posted and not blasting me. I'm planning on the dunes trip over the Halloween weekend...if I get my upgrade done. The rear is nearly complete, and I can run with my old school front
end if I have to.

Ok, my official vote is don't cover them. I like the raw simplicity of it.

Thanks for the vote. I am keeping score.

Is leaking grease that big of an issue with 930s?

I see CV grease external of most 930's, from heat I assume.

Devastator, if it was done, wouldn't the groove have to be ground in?

The only area of a CV outer housing that is heat treated is the area that the balls roll in. The outside can be cut with carbide tooling. That's how some cut "cooling fins" into them.

I know that the outer spacer in an IRS, the one with the tapered end, had a groove in the small area that went against the outer bearing's inner race that accepted an "O-ring" but they stopped doing it.

I may be wrong here, but I think that spacer is the same for a swingaxle, and that the oring was needed to keep the oil in.

I wonder if an "O-ring" would really work that well. I am sure that the German engineers must have considered it, they are pretty through after all.

I don't know if them germans suspected the use we offroaders had in mind for their CV's. Now that I have a flange and CV joint in hand, I can see where it would be difficult to put an oring in that, limited, area. I'll research it some more tomorrow, when I'm at work.

[Ol'fogasaurus]

I thought that the outer spacer for the IRS and the spacer for the swing were of different thicknesses. The outer bearings in the two systems are different or so I thought; Oh well, so much for thinking . Thanks for the info about the localized hardening on the CVs, I didn't know that they were like that.

Lee

[Devastator]

I thought that the outer spacer for the IRS and the spacer for the swing were of different thicknesses. The outer bearings in the two systems are different or so I thought

That is probably correct, (I don't remember either). But the o-ring is still used and located in the same place as it would be on the IRS.

[fusername]

I thought that the outer spacer for the IRS and the spacer for the swing were of different thicknesses. The outer bearings in the two systems are different or so I thought; Oh well, so much for thinking . Thanks for the info about the localized hardening on the CVs, I didn't know that they were like that.

Lee

depends on the mfr and era of the cvs. I cut the center star on my cvs to run them on my bus as my axle was too short by 1.4, and it is cheaper to cut a groove for the c clip to slip into than it is to buy new axles. on orignal VW joints you can cut very easily the center of the star, but if as you get close to the grooves you start shooting sparks and getting jitter. I did not try cutting the outer piece, but hte material and colors from the hardening process appear the same.
however on an EMPI joint the cetner star is MUCH harder all around, and no cutter would even touch it. most likely they save money on heat treating by usieng a harder steel to start with, or use a cheaper full surface hardning processs, unike what appears to be a flame hardening process on the og joints.
I also have a second set of CVs, lobro, that I could only cut a very small groove into the star before the cutter stopped, so there was some kind of hardness going into the star there. But if you look at stock cvs you can see the discoloring around the ball 'races' where they were hardned.

[Devastator]

I was only referring to the outer housing of the CV joints. I should have been clearer on that. The ball races on the outer CV joint housings are induction hardened while the rest of the housing is not. I've not messed with the inner star part of the CV's, however. I have Lobro's and am considering lightening them by removing stock from the O.D. of the outer housing, (just like the racers do). I'm also considering counter boring the inner stars, (as you did Fuser), in order to put my axles in a "happier" place, and reduce the amount that the inner star will extend into the axle boots during full droop, thus reducing the likely hood of blowing the CV joint sky high.

Oh, and there is not enough room to put an o-ring in the CV's.

[Devastator]

My shocks arrived today!