Identifying Codes On Gearbox?

[QUIKBLADE]

I have a Cefiro, that has had a 5 Speed manual conversion... Still an RB20DET engine.

I'm trying to figure out what gearbox it has, eg: R32GTS(-T -R), R33 GTS(-T)? My question is there anyway to identify which type of car each specific gearbox came from from the above example? EG: model/part number on the gearbox or similar...???? Clutch may need replacement so, kinda need to know

Kind Regards.

[Duncan]

Well it almost certainly won't be a 4wd gearbox they are a pain to remove the transfer case. I'm not sure how to tell a 32 from 33 gtst box without it being apart

[Bl4cK32]

left is a r33 gtst box, right is rb20det box.

size should tell, but there are numbers on the case as well

[SirRacer]

the box on the right is a r32 gtst/gts25de box (better than normal de box)

you can tell its the turbo box due to the amount of ribbing on the box (others dont have half as much) and the red hose on top

[frigjam]

for r31/r32/a31/z31 rb20 boxes, RP71C is the model and next to that is either #1 or #2 which denote either single or double syncros, generally double syncros are only in the turbo variants... the ribs on the gearbox casings I have found don't always match if its a turbo or not as I've pulled a few ribbed boxes from N/A vl commodores and they look identical to an import turbo box, but they arent the same.

easiest give away with your car quikblade, would be to check the box cross member, pretty sure an a31 manual cross member will bolt straight up to the body of and a31 auto cefiro, if its got a modified crossmember then its likely its a 25 box cos they're longer (just) than the 20 box!

Edited May 21, 2006 by frigjam

[RCEBNR]

the box on the right is a r32 gtst/gts25de box (better than normal de box)

you can tell its the turbo box due to the amount of ribbing on the box (others dont have half as much) and the red hose on top

out of curiosity what is the red hose? :noob:

[Bl4cK32]

see my pic above and the box on the right (20t) has a reddish breather hose hanging off it...

[RCEBNR]

yeh, i ask as the hose has an eyelet for a bolt (which is missing in my case) and is tube is hanging loose in my car... should i worry about it? i have no idea where its spose to bolt to

[ADDICTED2R34s]

so what is a rb71c #1 i have one and have no idea what it out off any1now?

[SirRacer]

in my experience they all have the same code regardless of what they are, correct me if im wrong however. thats what ive seen

the red hose is a breather hose

[frigjam]

refer to my above post about gearbox codes. the RP71C #1 should be out of a non turbo car, aussie or import - found locally in R31, Z31 n/a, VL n/a and most likely in a few imports such as n/a A31 or R32.

[ADDICTED2R34s]

wierd i rang a couple places they say that it comes up as both turbo r34 and non turbo r34???

[kudos.motorsports]

The easies way to tell the difference between an RB20 and RB25 gearboxes (assuming the 25 box is of a turbo origin) is pop your head under the the drivers side and have a look at your clutch slave cylinders.

RB20DE(T) & RB25DE

RB25DET

[QUIKBLADE]

Well Cool.. thanks Big Sully.. I checked and she looks like an RB20DET slave cylinder...

Also, where the hell is the filler plug on an RB20DET box??

[kudos.motorsports]

The filler plug is on the passenger’s side of the box. From memory you will need 17 or a 19mm spanner. Unless you have an oil pump you will have to run a hose and funnel setup from under the bonnet to the hole. You'll need two people, one to hold the hose, the other to pure the oil in.

I hope that makes sense.