My only thing I have to source is the pressed in studs that need to fit into the output shafts that WCR sells. I could take the ones off my old Diff, but I would rather install new ones. Anybody know a source of said studs.

thanks!

parts should start arriving friday or monday.

You might have to search the threads on Hybridz for that. They were having a tough time coming up with those. I used the ones from my old axles without reservation. Not sure if I have ever read about a failure on one of these bolts.

Edited October 31, 201311 yr by madkaw
because

I have a spare diff in my storage unit, so I may have an extra set already...Thanks! I just wanted new ones... well, just because...

Wonder if the dealer might have them. Looks like they're called out in the R180 diagram, but not the R200. Part #34.

Datsun 240Z/260Z/280Z Differential Gear, Pinion & Cover (R180)

And Courtesy shows availability. $3.11 each.

BOLT-DRIVE :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

I forgot all about courtesy!

Thanks for that research, I am going to get 8 new bolts then!

Looking forward to the pics of the conversion. You will notice a big improvement going to the 3.90! If you like hwy driving I will definetly recommend a 5spd swap with that gear ratio.

Have you looked to see what you will be taching at 60-65mph with a 3.9 diff matched with your current 4 speed?

Mitchell

That's a good question,I was thinking the same thing. I'm going to take a wild guess and say app 4000rpm.

It could be more.

I'm thinking more like 3500 at 60, depending on whether Stephen has the 336 set or the 354 in his car.

Again, read the threads on Hybridz about the bolts for the side axles. Courtesy got it wrong for me and it took two months to get a refund on my credit card.

I read through the thread and, actually, the studs just seem to be difficult to find. Dtsnlvrs reported in Post #242 that the part number, 38228-21000, does work and can be found. In #245 you found 12. So it comes down to luck or, hopefully, Nissan made more. Somebody talked about Nissan having a vendor make more so maybe they've restocked by now. I forgot to note which post and got tired of reading so can't say who said that. Post #257 reports an option using hex heads.

Maybe a design revision would be in order to allow the use of readily available studs. It's Wolf Creek's program now, maybe someone can send a prompt.

By the way, somebody had "whine" in Post #273, although it was just one of several. But, reconsidering everything, the OBX option seems to score a few more points in the viability contest.

Subaru WRX STi R180 Side Axles - Vendor's Forum - HybridZ