I bought a LS4 package to install in my 88 Formula. After looking things over and comparing this and that I came to the realization this thing is MASSIVE. Compared to my 2.8. So I decided to try and install the LS4 bearing into the 88 knuckle, this would give me the factory drive-train all the way to the wheels.
I bought a low mileage OEM Delco non-ABS Grand Prix bearing at Morris Rose Salvage to play with. I then measured and compared the hub to flange widths and found them to be about the same.
The shoulder fits between the the bolt holes.
So I started to tear the LS4 bearing apart.
This cover was glued down tight with some green stuff.
I used a piece of 1-1/4" black pipe as a spacer to pull the bearing race off.
I expected the bearing race would come off hard but pulled off relatively easy.
I ground down an old bi-metal sawzall blade and carefully tapped out the grease seal. I wish I could purchase new seals but these are throw-away bearings, so I doubt they are available.
All the parts
This shoulder measured about .375" and centers the bearing on the knuckle.
Here is how deep I would have to bore into the knuckle. I decided to go for it; but if I were to do it over I would face off about .125" from the bearing shoulder to move farther away from the brake flange.
The knuckle is bored to accept the bearing, I allso have the seal sleeve installed with Loctite instant gasket.
I can always turn up a bushing and install the factory wheel bearing if I have to.
This is the wear line left from the balls.
If I spot face for the bolt heads down to the flange face; I am concerned about leaving enough metal for strength.
.082" then becomes the race thickness at this point.
.202" is going to be my minimum
I notched and drilled a 5/16 grade 8 washer and did not spot face as deep. I can live with .208". The spot face on the bearing flange is below the washer.
I didn't want to take any chances with the bolt head clamping down near the bearing race and distorting something.
This sharp edge had to be smoothed off so the seal wouldn't snag on assembly. There was a plug I knocked out of the wheel flange and drille out to 3/4", I still had to use my die grinder to elongate it towards the hub center to get my allen bolts threw.
Some trial fitting and the bearing seal is turned up. The seal is a SKF 19630. This seal will only fit the OEM Delco Bearing, Chinese and other aftermarket wheel bearings wont work with this seal.
I had to trim down the ABS reluctance wheel/clip retainer for seal clearence. I turned up a piece of aluminum with a .050" shoulder to get the depth I needed on assembly.
Going back together
I opened up a old bearing race with my dremel tool to use as a spacer when I pressed the race back together.
Some more Loctite Instant Gasket before I drop in the bearing
There is .045" between the top of the bolt heads and back side of the wheel lugs bolts. If I were to go with thicker washers; so I wouldn't have to spot face as deep, I would cut down the allen bolt heads a touch.
.010" gap between the stub axel and and seal sleeve, if I here any strange noises back there; this will be my "wear indicator"
Finally all together!
A trial fit
Now I will have to waite and see how well this experiment works.I have about another years worth of work, before I am done with the project.
[This message has been edited by Jims88 (edited 03-01-2018).]