Rb25 Box Into Rb20 R32

[flurosil80]

hey guys a mate of mine is wanting to upgrade his20 box to 25 im not sure if its worth it but siad i would do it, so now i need to know what i need to do the conversion?

obvious things are 25 box

but does all the dowls and bolt hols line up or do i need a spacer plate for it?

dose the tail shaft have to be shortened? or yokes changed?

thanks for the help!!!

[battery]

i have done this, i killed 3 rb20 boxes so i had no choice...

you will need to modify the gearbox mounts, very easy if you can weld.

all dowels and bolts line up.

you will need rb25 slave

tailshaft needs the yoke from an r33 welded on, costs about 200 i think.

the biggest hassle is the speedo drive, search for a thread on this.

i got my box for $1100 and i got it done for just under $1500 all up with shockproof oil too.

[bubba]

i have done this, i killed 3 rb20 boxes so i had no choice...

you will need to modify the gearbox mounts, very easy if you can weld.

all dowels and bolts line up.

you will need rb25 slave

tailshaft needs the yoke from an r33 welded on, costs about 200 i think.

the biggest hassle is the speedo drive, search for a thread on this.

i got my box for $1100 and i got it done for just under $1500 all up with shockproof oil too.

+1

I killed two RB20 boxes (one with RB20 one with RB30).

My total conversion cost $2.5k and we did it ourselves. Box cost me $1500, custom 2-piece tailshaft with brand new slipyoke, centre bearing and heavy-duty serviceable uni's cost $700 then some misc. stuff like new slave, braided line etc.

But as to all the above, spot on

[flurosil80]

cool thanks guys