Jump to content
SAU Community

Recommended Posts

No doubt SAU has a few threads about this but can't find them and google just finds me 25 box into auto 32 etc etc

Usual thing happened, blew the rb20det gearbox drifting and want the rb25 box for the usual reasons.

This is what I know......

1. 25 yoke welded on the 32 tail shaft

2. Closs member fix (not 100% sure what needs doing)

3. Navara speed sensor (again, not 100% sure what needs doing)

Any info would be good and pics of what needs doing would be even better. Car has a 2530 so not sure if that'd make a difference.

Please no stupid comments or remarks

Thanks in advance.........Fliggy

Yuh, but that wasn't his question.

I had to swap crossmember when I did RB20 manual into auto R32. Then when I did RB25DET manual into the same car, I had to change crossmember again. I don't know for sure, but I strongly suspect I ended up with my original auto crossmember back in the car!

Fliggy, if you want someone to build a Navara sender up for you, contact Fours N More at Pooraka. They have done heaps of them. I suspect that they probably need at least some of either your R32 one or the R33 one. Apparenly it's not particularly hard, but I didn't pay any attention when it was being done to mine as I was either busy on some other part of the car or away overseas (I can't remember now, too long ago).

Otherwise, your list is about all the tricks involved. Take measurements of the lengths from the back of the new gearbox to the centrebearing studs on the car, and take your R32 tailshaft and the front half of the R33 one to Spicers and they'll cut and shut it for you. They do so many of them that if you walk in with the pieces they will recognise them and you won't even have to tell that what you want done.

Make sure you have the correct slave cylinder too, as they are different between R32 and R33.

  • 3 months later...
  • 9 months later...

Sorry to bring up an old thread but don't want to start a new one as I feel this has been answered but I cant find it.

I have an r32 manual with rb20det and box.
I also have just obtained a r34 RB25DET Neo with manual box flywheel everything as it came from the R34.

I want to put the 25 in the R32.... obviously

Is there anything I need to be aware of with the gearbox?
I just want to get all the parts I need before hand to make it as easy as possible.

Thanks

I had Neo and Neo box in my car. No different that fitting a standard RB25 box Into a 32.

RB20 box is 800mm long

RB25 box is 780mm long

RB25 box also had a different yoke to RB20. It's the same as 300ZX/VL turbo box. You need to acquire a yoke and then get it fitted to your RB20 tailshaft. You don't need to extend or shorten the shaft, keep it the same length.

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


  • Similar Content

  • Latest Posts

    • For once a good news  It needed to be adjusted by that one nut and it is ok  At least something was easy But thank you very much for help. But a small issue is now(gearbox) that when the car is stationary you can hear "clinking" from gearbox so some of the bearing is 100% not that happy... It goes away once you push clutch so it is 100% gearbox. Just if you know...what that bearing could be? It sounding like "spun bearing" but it is louder.
    • Yeah, that's fine**. But the numbers you came up with are just wrong. Try it for yourself. Put in any voltage from the possible range and see what result you get. You get nonsense. ** When I say "fine", I mean, it's still shit. The very simple linear formula (slope & intercept) is shit for a sensor with a non-linear response. This is the curve, from your data above. Look at the CURVE! It's only really linear between about 30 and 90 °C. And if you used only that range to define a curve, it would be great. But you would go more and more wrong as you went to higher temps. And that is why the slope & intercept found when you use 50 and 150 as the end points is so bad halfway between those points. The real curve is a long way below the linear curve which just zips straight between the end points, like this one. You could probably use the same slope and a lower intercept, to move that straight line down, and spread the error out. But you would 5-10°C off in a lot of places. You'd need to say what temperature range you really wanted to be most right - say, 100 to 130, and plop the line closest to teh real curve in that region, which would make it quite wrong down at the lower temperatures. Let me just say that HPTuners are not being realistic in only allowing for a simple linear curve. 
    • I feel I should re-iterate. The above picture is the only option available in the software and the blurb from HP Tuners I quoted earlier is the only way to add data to it and that's the description they offer as to how to figure it out. The only fields available is the blank box after (Input/ ) and the box right before = Output. Those are the only numbers that can be entered.
    • No, your formula is arse backwards. Mine is totally different to yours, and is the one I said was bang on at 50 and 150. I'll put your data into Excel (actually it already is, chart it and fit a linear fit to it, aiming to make it evenly wrong across the whole span. But not now. Other things to do first.
    • God damnit. The only option I actually have in the software is the one that is screenshotted. I am glad that I at least got it right... for those two points. Would it actually change anything if I chose/used 80C and 120C as the two points instead? My brain wants to imagine the formula put into HPtuners would be the same equation, otherwise none of this makes sense to me, unless: 1) The formula you put into VCM Scanner/HPTuners is always linear 2) The two points/input pairs are only arbitrary to choose (as the documentation implies) IF the actual scaling of the sensor is linear. then 3) If the scaling is not linear, the two points you choose matter a great deal, because the formula will draw a line between those two points only.
×
×
  • Create New...