Jump to content
SAU Community

How To Tell The Difference Between A Rb20 Non Turbo To A Rb20 Turbo Rwd Manual Gearbox

3L turbo
 Share

Recommended Posts

3L turbo Newbie

3L turbo

Posted
Posted

G'day

I've recently been given what I've been told is a manual transmisson out of a rb20

I'm just wondering how can you tell the difference between the turbo and non turbo box? Or if there is a difference between them?

I've looked everywhere on the net and can't seem to find any information on it.

Thanks in advanced, sorry if this has already been covered in this forum.

GTSBoy Grand Master

GTSBoy

Posted
Posted

And RB25DE box is also the same.

But the ratios are not all the same. When I put RB25DE box into my R32, it was noticeably different gearing in 2nd and 5th. I'm pretty sure that the RB20DE ratios are the lowest of the lot.

3L turbo Newbie

3L turbo

Posted
  • Author
Posted

Ah too easy!

Cheers for the help, been searching all morning and couldn't find nothing lol.

Actually, what kind of power can they handle?

My gearbox I got now behind my rb30 has crapped itself and I got this box just as a quick fix for the time being, I've got about 230 rwkw, how long do you reckon it will survive for before im back To square one?

Cheers again for the replies

The Dan Grand Master

The Dan

Posted
Posted

And RB25DE box is also the same.

But the ratios are not all the same. When I put RB25DE box into my R32, it was noticeably different gearing in 2nd and 5th. I'm pretty sure that the RB20DE ratios are the lowest of the lot.

Unless it's out of an R33 in which case it will have an electric speed sender

GTSBoy Grand Master

GTSBoy

Posted
Posted

No. R33 RB25DE box is the same same as the R32 box (in the speedo hole). The electric sender in the NA box is not the same as the electric sender in the turbo box. No need for Navara hybrid drives. Just pull out original and stick in R32 cable. As far as I can remember, anyway. Was 7 or 8 years ago.

The Dan Grand Master

The Dan

Posted
Posted

No. R33 RB25DE box is the same same as the R32 box (in the speedo hole). The electric sender in the NA box is not the same as the electric sender in the turbo box. No need for Navara hybrid drives. Just pull out original and stick in R32 cable. As far as I can remember, anyway. Was 7 or 8 years ago.

Oh you meant that. I thought you were joking lol.

I've never swapped the N/A 32 vs 33 senders, only turbo/navara mod ones. (I am fully aware the senders turbo vs n/a are different though)

GTSBoy Grand Master

GTSBoy

Posted
Posted

I did it when I killed my RB20 box and couldn't get one at a sensible price.....yet no-one wanted the R33 NA ones....even though they were the same. The R33 one I got was almost completely brand new. Was a good deal.

mungy Experienced

mungy

Posted
Posted

Ah too easy!

Cheers for the help, been searching all morning and couldn't find nothing lol.

Actually, what kind of power can they handle?

My gearbox I got now behind my rb30 has crapped itself and I got this box just as a quick fix for the time being, I've got about 230 rwkw, how long do you reckon it will survive for before im back To square one?

Cheers again for the replies

they can handle a fair bit of power, its the torque that kills them, because your putting whats ment to be for a 2000cc engine onto the back of a 3000cc engine

it wont last very long especially if you have a HD clutch, that bitch will die fast as f**k if you like to put your foot down alot and if you take off in the wrong gear you gonna snap all that shit up in there lol

your best bet is to spend that extra cash, get yourself an RB25DET box and tailshaft, get the tailshafts glued together by a workshop, and V-WALLA!! a box that will handle the

shit you put it through

3L turbo Newbie

3L turbo

Posted
  • Author
Posted

Thanks mungy for the feedback.

I recently found out a couple bearings in the box I'm gonna use have collapsed, drained the old oil out of it and a fair few hunks and chunks came out with it, instead of playing around with that might look into adding some cash and picking up a stronger box, seeing as I'm gonna through more cash into some more horses, I'll end up at square one lol?

mungy Experienced

mungy

Posted
Posted

trust me i ran a RB20 box in my RB30ET and killed it first week i had it, bought a second hand one to get me around while i saved for a 25 box and blew that the next week :dry:

borrowed some cash for a 25 box and shaft, had no troubles with it to the day i sold it

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Dose Pipe Sutututu
      Intercooler Choice

      By Dose Pipe Sutututu · Posted

      Plazmaman 76mm Pro Series, done. Data to back it up, I posted up somewhere here a few years back
    • GTSBoy
      RB26 swapped gtst

      By GTSBoy · Posted

      So.....wire it up appropriately. You can't use the resister pack with those injectors anyway.
    • r33.antwone
      RB26 swapped gtst

      By r33.antwone · Posted

      that’s the thing i’m on ID1050s and haltech not getting power due to the injector resistor 
    • Toilet Goblin
      Intercooler Choice

      By Toilet Goblin · Posted

      ahh okay cheers, i was thinking of just going for the m073, think m079 would be way too overkill considering they are same size. 
    • GTSBoy
      HK Premier with plans for slight mods, but keeping clean and simple

      By GTSBoy · Posted

      My first car was a HG. I'm very familiar with them. A mild cam upgrade is a good idea. The 186 is a very flexible engine - meaning it has good torque from down low. You can give up a little torque down low for quite a lot more excitement in the mid range, and a bit more up top - but they are not exactly a rev monster. You need to upgrade valve springs at the minimum. For a bigger cam, you'd want to make sure it wasn't still running the original fibre cam gear. That would be unlikely, given that most of them shat themselves in the 70s and 80s, but still within the realms of possibility. Metal cam gear required. Carbies are a huge issue. The classic upgrade was always a Holley 350, which works, but is usually pretty bad for fuel consumption. The 186S had a 2 barrel Stromberg on it that was very similar to the one on the 253, and is a reasonable thing if you can find one, and find someone to help you get it set up (which is the same issue with setting up a 350 to work nice). The more classic upgrade was twin sidedraught CD type carbs, or triples of same, or triple Webers. The XU-1 triple Webers being the best example. You can still buy all this stuff new, I think, but it's a lot of coin to drop. And then the people able to set them up are getting fewer and further in between. There's still some, but it used to be everyone's** dad and uncle could do it. **Not everyone's! But a lot. All in all, I wouldn't get too carried away with the engine. Anything you do to it without a full rebuild for power and revs will only make it slightly faster. I am all in favour of a complete teardown rebuild, with nice rods and pistons, 10 or 10.5:1 compression, and a clean port job with at least a big enough cam to run 98 with that compression, if not bigger. And if I did that to a dirty old red motor, I'd want to inject it too, which I'd struggle to fight against the devil on my shoulder that would argue for ITBs and trumpets. But the bills would start to mount up, and it will still never make stupid power. OK, a few people still know how to build absolutely mental red motors, courtesy of the work that went into HQ racing and modern knowledge being applied. But even a 300HP red motor is no match for an RB20 with a TD06. So you have to decide what it's worth to you. I'd just put a set of 6>2>1 extractors, a 2.5" exhaust and an electronic ignition conversion/dizzy on it and just run the old girl like the fairly slow old girl that she really is.
×
×
  • Create New...