Bnr34 Gearbox Conversion

[Brocaine]

Hey guys,

Just want to know a little more information on whats involved with this conversion. I'm guessing maybe a different tailshaft, but the part I'm really not sure about is the transfer case. I'm guessing BNR32 transfer case doesnt mate up to BNR34 box. Does the BNR34 transfer case work with the BNR32 Attessa system? Or do you need to change more stuff over?

Cheers,

[Moodles2]

The BNR32 ATTESSA is mechanical (fluid actuated), while the BNR34 ATTESSA is electrical. Otherwise that's all I can help with.

[Brocaine]

Are you talking about Attessa or Hicas?

I don't mean the 4 wheel steering....

[MrStabby]

There's been threads on this before. Think about the gearing - 34s have different diff ratios.

[UWISSH!]

u need

r34 box, transfer case, front and rear shafts and an r34 clutch.

Thats as much as i know

[R31Nismoid]

also R34 Diff's

end of the day, its a pointless conversion really.

[Moodles2]

About the BNR34 transfer case as well, the chain is physically smaller (less surface area) than the ones from the transfer cases of the previous models.

[R31Nismoid]

For the price of the box + conversion, you'd get a OS gearset or similar into your existing box...

Can't go wrong with that!

[bigmikespec]

also R34 Diff's

end of the day, its a pointless conversion really.

Why do you need the diffs? Keep for 4.111's.

It can not be that pointless is guys like "dazmo" believe it is good enough for his race car.

[Deano 1]

much better idea Ash had, Just buy a 1st-3rd OS kit, get your box built with it in it. and if you want to make your car have more low end punch just grab a set of 4.3 ratio diff gears..... sorted and much less hassel.

[bigmikespec]

much better idea Ash had, Just buy a 1st-3rd OS kit, get your box built with it in it. and if you want to make your car have more low end punch just grab a set of 4.3 ratio diff gears..... sorted and much less hassel.

So rebuild gearbox, rebuild two diffs... or... replace gearbox and tailshafts with R34 Getrag?

I think the latter might be less hassle and maybe even cheaper.

[R31Nismoid]

Why do you need the diffs? Keep for 4.111's.

It can not be that pointless is guys like "dazmo" believe it is good enough for his race car.

Depends what you want but the R34 diffs complement the Getrag Ratio's which are nowhere near the same as the R32/R33 box.

If memory serves me correct 1st/2nd become near useless if keeping R32/R33 diff's.

But as i said, depends on what you want. The OP isn't clear at all about why he actually wants to do it/what he hopes to achieve.

[R31Nismoid]

much better idea Ash had, Just buy a 1st-3rd OS kit, get your box built with it in it. and if you want to make your car have more low end punch just grab a set of 4.3 ratio diff gears..... sorted and much less hassel.

The OS set actually slightly alters the ratio's as well which is nice

[bigmikespec]

Depends what you want but the R34 diffs complement the Getrag Ratio's which are nowhere near the same as the R32/R33 box.

If memory serves me correct 1st/2nd become near useless if keeping R32/R33 diff's.

But as i said, depends on what you want. The OP isn't clear at all about why he actually wants to do it/what he hopes to achieve.

Would be good if someone like dazmo could comment or atomicbomber...

I am devasted, no more 4.375 diffs from Nissan anymore

[GTR1993]

Would be good if someone like dazmo could comment or atomicbomber...

I am devasted, no more 4.375 diffs from Nissan anymore

I have a set

Not sure I want to sell them though....

[bigmikespec]

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