Rb25 Gearbox Into R32

[salad]

Well I just did the conversion and yeah, as Simon said, the gearbox crossmember lines straight up to the factory holes. Mine was originally an auto, and I dont know what cross member I'm using... Didn't line up with the RB20 gearbox though. Engine is ~30mm lower and have had no issues with the box fouling on the tunnel or anything like that.

[Simon-S14]

no but you've got leakage worse then jenna jameson after a hard night!

[mr_rbman]

Well I just did the conversion and yeah, as Simon said, the gearbox crossmember lines straight up to the factory holes. Mine was originally an auto, and I dont know what cross member I'm using... Didn't line up with the RB20 gearbox though. Engine is ~30mm lower and have had no issues with the box fouling on the tunnel or anything like that.

bit off topic but i know u have aftermarket sway bars so u may be able to help. i dropped my motor the same amount as what cubes pdf says and i cant fit an aftermarket swaybar (the sump fouls) how'd u go?

[Cubes]

Did you do yours or did shaun lower it?

Looking at yours its definitely sitting lower than mine.

As salad said to me.. Grab a bit of plate cut it to shape and space the swaybar chassis mounts down slightly so the aftermarket bar fits.

using the rb20det sump provides more clearance around the sway bar area.

[1400r]

25 shifters are a lot longer then a 20 shifter... i find it quite annoying acctually and i'll prob fit a 20 shifter back in to my car, Too many mis shifts from 2nd to 3rd while drifting on the track... im not THAT retarded but the shifter makes me feel like a doofus every time! lol

Im very surprised you didnt have to reduce the tailshaft length... mine simply would not fit! oh well its in now lol

cant use a rb20 shifter in a 25 box unfort

the balls on the end of the shifter are much bigger on the 25

20 shifter will just float around in it

[salad]

You sure? Mine sits in there pretty nicely.

I dont think the RB20 sump offers any more clearance for the sump, the swaybar seems to be fouling at the front where the RB30 and RB20 sumps are the same shape.

I will just be spacing the swaybar down to make it fit, shouldn't have to go too much, almost fits (stocker) as it is, and it's pretty low as is!

[kiwi32]

The r33 electronic sender is hall effect so it has 3 wires 12volt, earth and signal. making the factory speedo work should be pretty easy.

[BHDave]

cept it only has 2 wires...and the r32 speedo is mechanical

[Simon-S14]

cant use a rb20 shifter in a 25 box unfort

the balls on the end of the shifter are much bigger on the 25

20 shifter will just float around in it

wanna bet?? they fit no worries.

maybe your balls are too small

[kiwi32]

cept it only has 2 wires...and the r32 speedo is mechanical

I know the 32 speedo is mechanical i was thinking of adapting a 33 speedo into a 32 gauge cluster. Having only 2 wires makes it a magnetic inductance sensor. the 33 clusters only have one signal in which means there is something else between the sensor and cluster, probably a BCM of some sort making it just about impossible to use the sensor and factory speedo.

[Cubes]

If it were possible we could then fit up some of those nice looking 300km/h speedo's.

[=premo=]

How would one go about hooking up the R33 eletric drive to an APEXi RSM?

See my speedo hasnt worked for a while because the plastic attachment into the back of the speedo has shattered after I put too much glue in it and forced it back on too hard. I would need to do the navara speedo drive bit and get a bit made up for the cable to speedo. Wouldnt it just be easier for me to hook up the R33 speedo drive and use the signal from that to operate a Rev/speed meter???

Anyone know how to get the R33 speedo drive to send a signal???

Thanks

[Craved]

would love to know the location of this speed sensor - attached

one day i will have to try and trace the 2 wires from the rb25 box to the cluster to see if the conversion of the signal is done inside the cluster or externally.

[=premo=]

So are you saying its only two wires from the R33 speedo drive that then go into another device and get turned into a single wire that goes to the ecu and speedo?

[Craved]

So are you saying its only two wires from the R33 speedo drive that then go into another device and get turned into a single wire that goes to the ecu and speedo?

thats what i was thinking about finding out

the wire 53 speed wire is the one people cut to remove the 180km limiter

so this external box (in the pic) is either the dash cluster or another box in the loom somewhere.

if anyone could get the entire workshop manual for these cars like the one i have for a 180sx which shows every wire and where it is in the car it would be alot easier to work out

[=premo=]

so will the drive send a signal if its just hooked up to 12v and earth?

If it does then I should be able to use that signal for a aftermarket speedo device (apexi RSM or AVC-R)

[=premo=]

Getting tail shaft made next week but still waiting on gearbox delivery so can anyone tell me the length from diff to gearbox?

Mine was a manual if it makes a difference.

Thanks,

Daniel

[Cubes]

Premo, Who are u getting to do your tailshaft?

There's 2 places here in Adelaide that I'm aware of; one is absolute crap the other is fairly good.

[=premo=]

Through a friend. Should be a bit of a mates rate's special. Not using a second hand yoke, it will be completely new and custom to handle the torque and power. Hardy Spicer.

[Simon-S14]

so will the drive send a signal if its just hooked up to 12v and earth?

If it does then I should be able to use that signal for a aftermarket speedo device (apexi RSM or AVC-R)

i tried doing this with mine and it didnt work so i sold the rsm and got a navara drive