Starting a new project...Subaru STI Differential swap into my Z

[Zedyone_kenobi]

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.

[madkaw]

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, 2013 by madkaw
because

[Zedyone_kenobi]

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...

[Zed Head]

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

[Zedyone_kenobi]

I forgot all about courtesy!

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

[AlexS13]

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.

[Travel'n Man]

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

[Hunter260Z]

Mitchell

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

[Travel'n Man]

It could be more.

[madkaw]

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

[John Coffey]

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.

[Zed Head]

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