vashonz Posted December 31, 2006 Share Posted December 31, 2006 Instead of doing the MM swap I decided to go with parts I had sitting around. I'm using the 240z (25 spline) stub axels, along with the 280zxt companion flange. I have the 240z dust shield ready to weld onto the zx companion flange. But I want to solve the problem of inner grease seal. I looked for an R200 front pinion grease seal, but couldn't find one (although I didn't try nissan). I did get a generic grease seal with a 40mm ID, 74MM OD. The seal was metal and I could not shave it down to the required 73mm to press into the S30 strut assembly. The outer wheel bearings are sealed and so do not use a grease seal. I simply ordered 4 new outer wheel bearings and will install them so that it seals the bearings properly. As far as I can tell the inner and outer bearings are identical except for the grease seal. Can anyone think of a problem with this solution? I'll throw some photos up later. Thanks to Pete Paraska and Terry Oxandale for the writeups. Quote Link to comment Share on other sites More sharing options...
viperredls1z Posted December 31, 2006 Share Posted December 31, 2006 That all sounds too simple. are you sure you wont have to shorten the flange or the halfshafts, or both? I assume you are talking about useing the 6 bolt half shafts, Quote Link to comment Share on other sites More sharing options...
Z-Gad Posted December 31, 2006 Share Posted December 31, 2006 If you get 2 of the R200 front diff seals, you can remove the outer rubber coating (otherwise they are too wide), and they will work as your dust shield. I had to "massage" them in place, but they worked just fine with the 280zx companion flanges. It is what i used a while ago on my 77 280zt when I had a funky VLSD setup with AMC Eagle CV shafts. Quote Link to comment Share on other sites More sharing options...
zcarnut Posted December 31, 2006 Share Posted December 31, 2006 ....As far as I can tell the inner and outer bearings are identical except for the grease seal. Can anyone think of a problem with this solution?... In addition to the seal, the other difference between the inner and outer rear wheel bearings (on the S30's) is that the outer bearing has an extra “lip” on one side. This lip is on the outside of the bearing. It’s function is to position the outer wheel bearing correctly on the stub axle. The stub axle has an inside radius where the axle meets the flange piece that holds the lug nut studs for the wheel. The inside radius does not allow the bearing a definite “stop” location when it is being pressed on the axle shaft. The lip on the bearing makes contact with the axle flange piece and thus the bearing is positioned in the correct location. This lip changes the overall thickness dimension of the bearing so I would not reccomend using it in the inner bearing location. The inner rear wheel bearing is a standard bearing, available at any good bearing supply company. Quote Link to comment Share on other sites More sharing options...
zcarnut Posted December 31, 2006 Share Posted December 31, 2006 ....I looked for an R200 front pinion grease seal, but couldn't find one (although I didn't try nissan). I did get a generic grease seal with a 40mm ID, 74MM OD. The seal was metal and I could not shave it down to the required 73mm to press into the S30 strut assembly..... The OD of the inner seal is 72mm, not 73mm. What you need is a 40 x 72 x 7 seal (again, a standard generic size): Quote Link to comment Share on other sites More sharing options...
Cal Poly Zmanaustin Posted December 31, 2006 Share Posted December 31, 2006 Steve, love these kinds of submissions. Even though I am not doing this swap it is great info and easy to follow. Quote Link to comment Share on other sites More sharing options...
vashonz Posted December 31, 2006 Author Share Posted December 31, 2006 I thought it was 73mm, I guess thats what I get for measuring with cheap plastic calpiers. I didn't find any 73mm OD grease seals, if its 72mm that makes it easy. I'll grab a couple of those and see how it works. Quote Link to comment Share on other sites More sharing options...
blueovalz Posted January 1, 2007 Share Posted January 1, 2007 This alternate seal Zcarnut shows does work. I used it during the last bearing change before changing to the 930 joints. Quote Link to comment Share on other sites More sharing options...
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