R32 Gtst Gearbox Conversion, To R33 Manual

[RB25HR31]

i have HR-31 with a 34 GTT box in it. so i think same story with r32s.

i bought the R32 GTR pinion assambly and cog. found out today i also need some clips and other bits, as i was really interested to know how the assembly is not meant to fall out of the box, and how the cog is not meant to fall in.

the assembly and cog from nissan is $130, and the other bits and pieces to hold it all together is another $10, which i have to wait on.

will post up in couple days how it goes.

[RB25HR31]

here's the story for the HR31 - i'd assume it same for the 32.

you need:

- R32 GTR Pinion Assembly (32707)

- R32 GTR Cog (32703)

- Pin to hold Cog in the assembly (32712)

- Washer thing to hold the assembly to the box (32718)

all up cost me $140 even for everything, but my speedo is SPOT on.

you take out the old one, put the cog throught the housing and hammer in the pin in the side so the cog doesn't fall out, oil up the housing and the gearbox case where it slides in, using a rubber hammer, bash it in till the groove sits flush with the box, (there is also a mark at the top of the pinion housing, have this point dead vertical) put the washer thing in (you'll know what i mean), tighten it all up so it doesn't go anywhere, slap on your speedo cable, and take for a test drive.

Chris.

edit - well scrap that idea. got 160kms out of it and the gear wore away - teeth are cut the wrong way. didn't pay too much attention just slapped it in and bang.

Edited December 26, 2006 by RB25HR31

[5LYDWAY5]

how about rb25 in a silvia with R32 diff. what do I do wit the speedo?

[1400r]

I just bought a Navara speedo drive as per ceffy thread on the same subject .

I think all I need to do is swap the 33 speedo drive cog on to it and my mates Ceffy(Huddy) will have a working speedo again

[BHDave]

how about rb25 in a silvia with R32 diff. what do I do wit the speedo?

plug it in.

s13 is electronic speedo, r33 is the same. You'll probably have to lengthen the wires in the loom to suit as the s13 drive has a flying loom off it and r33 doesn't.

[1400r]

looks to be the right length just gotta order a 33 cog for it anyone got the part number?

[Simon-S14]

what year model navara do you use?

[CEF11E]

erghhhh..

I have a problem much the same.

I was sold an R31 import turbo gearbox and fitted it to my R32. the speedo drive on the r31 looks exactly the same as the R32 except they have different size cogs and the screw thread that holds the speedo on the r31 sender is busted.

the r31 cog is smaller than the r32. a performance place told me i can just put the r32 one in there and it will work. bit the cog is bigger.

also how much oil will i loose if i take the speedo sender out? i just filled the box with $130 oil and i would prefer not to loose it.

Cheers

[Simon-S14]

looks to be the right length just gotta order a 33 cog for it anyone got the part number?

bump thread

i just bought the same speedo drive with the intention of swapping cogs. but how the hell do you get the cog off the navara one???

[BHDave]

cut it off, very carefully

[neo32]

i told u guys its not hard just order the 21 tooth one from nissan thats what i did 2 years ago no problems with the cog falling off etc and 100 % accurate

this is the part number

32702-02G21

Edited July 29, 2007 by neo32

[Simon-S14]

tried ordering 21 tooth from nissan and was told it was going to be quite a wait from japan. and/ord they didnt have it in stock, so i gave up on that idea.

as for getting the cog off... i ended up firing the oxy up at work and melting the bastard off... worked perfectly

[lwboosted]

i did this conversion a while ago for my r32.. i had great succcess with the speedo for about 6 months but yesterday it has failed!!!

i had a navara pinion assembly with the cog off the r33 but when i first put it on the cog cracked and has now fallen off 6 months later!! you need to make sure that you cut a new slot on the oposite side of the other for the locator, otherwise the cog sits too close and will grind away...

i went down to nissan today to try and get a new r33 cog but they dont make them anymore.. not even the whole pinion assembly!! so i have no idea what to do now which is really anoying becuse r32s have speed sensitve steering so now my steering has gone real hard.. anyone know where u could source cogs from??

oh and you cant use gtr cogs because they go inthe oposite direction and will just get hacked up anyway..

Edited June 18, 2007 by lwboosted

[Simon-S14]

hey mate

yeah i got mine all sorted... tad paranoid about the cog falling off as if it does i have no idea how i'll get it out again! or if it will do internal damage to the box.

but anyway the navara drive has a longer internal shaft, if you sit the cog on this shaft it will be longer over all then the R33 drive, so i cut off 5mm of the navara shaft, ground a half moon end on the shaft for the cog to sit on also. and the over all length was exactally the same as the R33 unit. so in theory it does not need the extra cut on the other side for the locater. I ended up using a m6 bolt and a round washed to locate the drive via its slot. its a tight fit in the box anyway so i dont see it falling out.

Only other drama ive had is the cable is doing a tight U turn now to meet up with the sender... so the speedo needle gets the shakes at lower speeds.

[lwboosted]

nah it will definately fail!!! because you are using a 20 tooth cog now rather than the 17 tooth cog the cog is fatter.. if you look at the shaft of the pinion assembly the shaft is slightly off center thats why you have to rotate it 180 degrees otherwise the cog will be sitting too hard agianst the thing that drives it and grind away!!! i bassically have the same thread going that i started ages ago that is the same as this.. it explains it a bit better in there....

http://www.skylinesaustralia.com/forums/in...p;#entry3185872

[Simon-S14]

the shaft is most certainly NOT offcentre. it is dead center of the body... so i have no idea what your on about?

[lwboosted]

ok just wait a couple of months and your speedo will stop working and when u pull the drive out to cheak it you see that all the teeth have ground away...

grab your r33 drive and the navara drive and put them side by side and if u really look hard enough you can see... or get them side by side so they are facing exactly the same way and you will see the locator is on the oposite side of the assembly... i swear i speak the truth.. it happened to me!!!!! and now i cant find a new r33 cog

Edited June 22, 2007 by lwboosted

[Gts-t]

I dont know about you guys but this is the info i have and what im going to try.

remove cog from r33 gtst unit and put on r32 gtst unit. Put r32 unit into r33 gearbox.

Ill let u know how it works out

Edited June 22, 2007 by 2630GTS

[Simon-S14]

wont work as the R32 unit is shorter, and the body of the sender is smaller so wont fit in the hole.

lwboosted: mate i measured both the 33 and the navara drivees with a set of vernier calipers and they are dead center

[1400r]

the one Terry gets from Japan is looking like a better option to me at the moment

$295 but we've never had one come back and the do look different to the navara 33 cog hybrid

locator pin etc