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R33 Gearbox Onto A Rb20

R32FOURDOOR
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dangerous_daveo Grand Master

dangerous_daveo

Posted
Posted

You will need a new/ chopped down tailshaft, new clutch slave cyl, and probably be a good idea to get a new cluch and your fly wheel cleaned up etc, and you need to work out the speedo-drive.

Done it, its nice. LOTS of peace of mind.

  • 4 weeks later...
2LV8ETR Mentor

2LV8ETR

Posted
Posted
You will need a new/ chopped down tailshaft, new clutch slave cyl, and probably be a good idea to get a new cluch and your fly wheel cleaned up etc, and you need to work out the speedo-drive.

Done it, its nice.  LOTS of peace of mind.

Okey dokey, does anyone know what to do with the speedo drive? I've done the conversion but the only thing that has me stumped is this last trick.

The R33 uses a pulse sensor and the R32 uses a cable.

The BIG question is, is there a cable sensor that fits the R33 gearbox that can be used in the R32??

Any help would be appreciated

dangerous_daveo Grand Master

dangerous_daveo

Posted
Posted
Ok I've had it done.

Transtunnel is fine. Dont need to touch it.

Obviously clutch, fly wheel etc all the same.

You will need an R33 clutch slave, I got mine new from nissan for $88.00.

Yes you need the R33 yoke, then you need the cef tailshaft, the idea would be to shorten this. However if your center bearing is stuffed like mine, then you might want to look at getting a 1 peice shaft as this is cheaper than replacing the center bearing apparently (lighter also, so you get back some of that extra weight of the gearbox + less rotating mass)

Rb20 cross member is fine, we just moved mine and put some spacers in. You might need an engineer to look at this to make sure its legal. Mine is actually mod plated.

The speedo... You need your red gear off the R33 speedo sender (the one that goes in the gearbox) this then needs to be attached to a navara speedo drive (32702 - 02G17 pinnion assembly), should be about $22-25 new from nissan, this then connects up to your speedo cable like normal. Just test it tho, should be pretty accurate.

Get some of the seals replaced on the box if they need it. You REALLY dont want oil leaking on to your clutch.

Get your fly wheel/pressure plate/clutch all checked out while the box is out. I had to replace mine that was a cost I didnt allow for.

And why does the gear selector matter? Wouldnt your RB25 box come with one? I dont belive we used my RB20 one.

But yeah, once its done your more afraid your crank is going to snap in your poor little rb20 than your gearbox 

Quoting myself is bad :P

Just adding to that you need an S1 gearbox, as the S2s use a different clutch type. Cant remember which way it goes tho.

Hope that helps!

Jolinator Proficient

Jolinator

Posted
Posted (edited)

just to jump in here, can someone tell me what the difference between the boxes ratios are , specificly how much taller is the first gear? , i find first on my box to be useless for sedate driving and whatnot, gives me the shits revving to 80thousand rpm

Edited by Jolinator
dangerous_daveo Grand Master

dangerous_daveo

Posted
Posted

SK did a whole thing up a while ago. I belive the biggest difference might have been 2kmh? Say 1st gear 50kmh rb20 box, 1st gear 52kmh rb25 box. Its seriously bugger all nothing. Dont worry about it. I didnt knotice squat difference.

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