Rb25 Gearbox Into R32

[SirRacer]

Hey Joel,

I think i read under the cefiros section that its simply just a chop and weld job, with no additional length cut off?

Thanks

Byron

[Cubes]

Yeah that was the case for mine and Salads.

Premo's being a single piece, different story.

[SirRacer]

Classic length on a skyline regardless of 4dr or 2dr is the same and i think the cefiros and laurels are quite similar also so thats positive.

Ive got both a skyline and cefiro driveshaft downstairs so will compare them and post up for everyones reference.

Cheers

[bubba]

25 box going in soon and am trying to get my head around this whole speedo drive deal..

Question I have is: what final drive ratios does the Navara 17T gear suit?

Question 2: anyone know how many teeth are on the worm drive in the gearbox?

[1400r]

^ dont worry about it

just do it as stated Navara with R33 Red cog

[bubba]

I have 3.9 gears in my diff so was trying to figure out if there's a speedo cog more suited to those gears so I can kill two birds with one stone so to speak

[avrahan]

i have an r33 box in mine...speedo is fair wack out, but you can get em callibrated?? right?

[bubba]

Apparently. My mates auto-eleccy said bring it down and he'll fix it up for me. Now that I need to throw a 25 box in (current box has started making some not-very-nice input shaft bearing noises after boxing day burnouts) I figure I'll either try to solve it with a correct toothed speedo cog, or just do what everyone else has done and get the auto-eleccy to fix it.

Cya in an hour or two avrahan

[1400r]

well the 33 cogs 21 tooth (think) so if you can work it out from there go ahead

[bubba]

Be handy if I know what the ratio was.. hence asking if anyone knows the worm gear side. If not I'll measure in on the weekend.

[=premo=]

info in here

http://www.skylinesaustralia.com/forums/Me...er-t186140.html

[bubba]

Cheers, read that earlier in between work stuff but must have missed the bit at the top.. so 4.3 is 21T, 4.1 is 20T and 3.5 is 17T. Logic dictates that I would need 19T for 3.9s.. anyone know if a 19T cog is available?

[bubba]

Spoke to the parts guy at my local Nissan when I picked up my waterpump on the weekend.

Apparently you used to be able to get a whole Navara sender with a 19T cog, can no longer get the whole assembly though so he's ordered me a Navara housing and a separate 19T cog, will find out next week if the cog is the right length and cut the right way. Fingers crossed

[=premo=]

Can anyone tell me if I need to modify (beat the crap out of) the gearbox tunnel?

thanks

[mr_rbman]

Can anyone tell me if I need to modify (beat the crap out of) the gearbox tunnel?

thanks

nope!

[=premo=]

Awsome

[bubba]

OK well my hopes for the 19T cog were in vain, it's too short to work so I'm just going to run with the 17T for now.

[=premo=]

What crown wheel should I run for the new rb30det?

Anyone know how much there worth?

[Simon-S14]

acctually it helps getting the box in if you "massage" part of the trans tunnel around the starter motor. i did this and it gave a bit more room to work with.

[bubba]

What crown wheel should I run for the new rb30det?

Anyone know how much there worth?

Are you asking what diff ratio to run?

I run 3.9s and really like them, acceleration isn't as brutal as the 4.3s but it's much more usable and all round a lot nicer to drive.

If you change crown wheels, you need to change the pinion gear aswell, best way I found to do this is get an S13 diff with good pinion bearings and swap that into your 32 (only thing we kept was the 32 backing plate).