I think a proper breather set-up may help me with the fuel dilution problem.

 

The "multiple times per event" car is a rally car.

I don't -really- have a "race" car. Just rally and autocross.

The Subaru rally car gets Rotella T6. I'll use the same stuff in my MX-5 powered Mazda Rally truck when it's completed next year.

The autocross car gets Torco. I've been using SR-5 and V-Series-SS. I went in with a friend and bought the remaining stocks from a distributor and still have a few dozen cases.

In the late '80s I used to autocross an F-Prepared Datsun 240Z. It was an extremely loose engine with very high compression. That engine got Mobil-1, which was about as good as it got back then. And it got changed out fairly often too. But I was inside the engine about every fourth event.

 

Anyone know if NB bearings can be repacked?

 

Is this too much?


Writeup on how to repack hubs. Ill probably make a little video when i do mine this weekend.

http://waltermotorsports.com/v/Racing/hub/

 

This is what I took off:







This is what went back on:

 

Wow i probably need to redo those, I just slapped some all purpose grease inside without taking the race out.

 

Run a UOA, you're changing the oil too frequently and blowing money out your ***. I've done 5-hours at 275-290* sustained oil temps, driven 4 hours each way to and from the track, and the oil dropped viscosity but was still within an acceptable range. Food for thought I guess.
They're the same in my experience aside from the rear hubs on a MSM.
Not too much for the outboard side, its too much on the inboard side because if the grease pushes out it will attract lots of brake dust and chew up the innards.
I'd repack them annually if they don't die during the season. I always have 2-spares with me because sooner or later you'll need them.

 

What was different about the rears on the msm? I replaced my rear bearings with standard issue Napa bearings.
I would give mad props to anyone that can get the rears out without breaking the bearing. The outer race stayed on the hub when i pressed mine apart and everything fell to **** in the bearing.

 

The splines are fatter.

The center race coming out with the hub does not mean its damaged. The outboard race usually does not want to come off the hub so I simply clean it off, then bolt it back together. Its good insurance to repack the rear because changing them out SUCKS.