MS123 5 stud conversion tips!

[wilbo666]

Hey guys, just thought that I would let everyone know that is planning to swap MS123 hubs into their RA65, MA61 or RT142 rear IRS swing arms (and etc) that they need to use the existing (RA65, MA61, RT142) driveshaft flange, as it is different to the MS123 unit!


If you look at a RA65,MA61,RT142 driveshafts (by that I mean the shafts that go from the diff to the hubs), you will notice that the outer bearing race face is not flat. The shafts have a section the protrudes into the hub driveshaft connection flange/face (and the hubs are recessed to accommodate this). The RA65 recess in the drive axle flange is LARGER than the MS123 (~85mm vs ~81mm from memory).


If you try to bolt up RA65, MA61, RT142 drive shaft to the MS123 drive shaft flange the drive shaft will not seat inside the flange and there will be a gap!

I believe that you maybe able to swap the outer bearing race segment from the MS123 driveshafts onto the shorter RA65, MA61, RT142 driveshafts (have not checked), but I think the easier option is just to use the right parts to start with.

Just thought I would let people know, as some might just get the MS123 hubs setup in the rear arms without thinking

Cheers
Wilbo

[mrshin]

Handy to know, as I was going to be doing this sometime soon!