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Rb26Awd Gearbox To Rwd Only, For Rb25-S13 Help

nismorb25neo
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nismorb25neo Enthusiast

nismorb25neo

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G'day

i dont want you fellas to hate me if this has been discussed before,but i have a Rb25-S13 with a RB20 gearbox now i live in the states, unfortunatelly rb parts are very hard and spennnsive to find here, my buddys got a.RB26 gearbox laying around and i would really like.your imput and advise on HOW and IF i can use that gearbox in my car seeing that the RB25's go for.over $1200 i know you guys are.experts on this matters and i.can probably pick up the 26GBx off my mate for a fraction of the price.

in advance i thank you sooo much and I appreciate the help...

GTSBoy Grand Master

GTSBoy

Posted
Posted

Yeah....but......there is work involved. The "fraction of the price" that you pay for the gearbox is just the start. By the time you get it in the car you'd probably be happier with the easy option of just buying a 25 box. It's not as though RB25 turbo boxes are any cheaper here in AU. You want to be paying about that mush $$ for a good one here as well.

If you are still interested/determined and you were to search, you would find the work involved has been discussed on here before.

cheers

nismorb25neo Enthusiast

nismorb25neo

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yes i know theres work to be done but i dont know exactly what to do

the gtr gearbox is from a R32GTR if that makes a difference ,sorry i havent found where the info is

nismorb25neo Enthusiast

nismorb25neo

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And actually the gtr gearboxes here go for $150-300 that's a good price if you ask me , and if they're as strong as the rb25t gbox , I'm willing to go that route I mean not allot of people know that here .

Cheers

turboedsloth Grand Master

turboedsloth

Posted
Posted

26 boxes are essentially RB25 boxes dolled up into 4wd format. To change one back to RWD you need to find yourself a RWD mainshaft, extension housing, speedo setup, i'd probably throw a bearing and synchro kit through it aswell. Including labour you'd be looking at around 2k mark plus.

I'd get a 25 box personally, or you could get a 300zx box or one of the big pathfinder boxes over there.

nismorb25neo Enthusiast

nismorb25neo

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S@ turboed: hmmm i see , my buddy has a rb25 but 3rd gear was literraly shaved off by him in his RB26 mx5 when he was making over 650hp , would i be able to use 3rd gear from the gtr box? on the 300zx do i just change the front housing from my rb box on there?

turboedsloth Grand Master

turboedsloth

Posted
Posted

yeah you could use the guts out of his yours and into his, and you could swap the bellhousings over. Again, if you aren't mechanically minded and will be paying someone to do the job for you, the cost of the exercise will blow out to more than the price of a 25 box

nismorb25neo Enthusiast

nismorb25neo

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ok so 3rd gear is the same in both gboxes ? and i can swap them? i am mechanically inclined i rebuilt my RB but i learned it from my buddy thats got both gboxes if i can do that then ill tell him ill buy the 25 and put the gear in from the GTR gbox .......

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