Can I buy larger R180 diff flange?

[GregTas]

So my 240 is almost a goer. Last real mechanical job is sorting the tail shaft.

I have an RB25 in it and I have a Skyline tail shaft, but the diff flange on the tailshaft is too large to fit my R180 diff.

Is it possible to by a larger flange that could go on the front of my R180? i.e. R200 bolt pattern? or a large blank undrilled flange?

Does anyone have any experience in doing this i.e connecting the RB up to an R180?

 

[Cozza]

What about subaru?

i think I’ve got one lying around somewhere 

[GregTas]

Thanks I did some checking and it looks promising. I didn't realise they might bolt straight. The flange is a good size.

I found a pic of a Sti diff that could be suitable

Do you know what model Subby would work?

Edited September 1, 2018 by GregTas

[1600dave]

Take skyline tailshaft and stock tailshaft to driveshaft manufacturer / repairer, tell them what finished length you need, hand over what will probably be a surprisingly small amount of money, come back a week later and you're set to go.

 

Edited September 1, 2018 by 1600dave

[GregTas]

I didn't want to go with my stock datsun one because I wanted to go with a stronger uni joint. That tail shaft uni is also a stacked one and so not repairable if the uni breaks.

I have a place that can modify my skyline tailshaft, I just need the larger diff flange to bolt it up.

 

[Cozza]

I think all sti’s had R180’s so any sti one should work.

Yes they use the same spline, I currently run an sti LSD diff  I just swapped the input flange and use some output shafts from the states to suit the Subaru spline count and circlip hold in method.

Ill check out the shed/tip and see if I can find my one.

You’re welcome to it. 

[GregTas]

Thanks Cozza

[TOO60Z]

There is the possibility of the larger flange fouling on the sway bar if you are going to run one.