Jump to content
SAU Community

Recommended Posts

I was curious what people used for the transmission support when using the rb25box on the R32. I noticed the rb20 box only 1 of the holes lines up, other than welding a new piece on, Is there a stock support that would do the  trick.  Sorry if its been covered over and over again, I did not see any info that would help.

Link to comment
https://www.sau.com.au/forums/topic/475058-rb25det-box-on-hcr32/
Share on other sites

There are 3 Nissan gearbox crossmembers used on the various Skylines and S chassis cars, used for autos and manuals.  They are stamped A, B and C.  I can't remember which is which, and in the long run, my specific history is probably not helpful, as I first took the RB20's auto out and put in an RB20 manual box, which used a different crossmember to the original.  Then I swapped in an RB25 manual which used either the same one I originally had, or the third of them.

Regardless, look at the stamp on yours, go down to the wreckers and get one of each of the others, and you will have what you need.

There is actually A,B,C and D. And as GTSboy said its almost impossible for us to tell you what will fit as it depends on what box you have and if your car was originally manual or auto as the holes on the chassis are in different spots. It is easier to just modify your existing one.

  • 2 weeks later...

search rbfactory i got my series 2 r33 rb25 box fitted to my hcr32 coupe through him, he fabricates gearbox crossmembers and lots of other skyline parts, super solid and doesn't charge a heap either. from the ipswich area but will post wherever. youd be looking for the 111mm slotted design, fitted my car perfectly. he actually did a run of them when he made mine so he might even have some in stock still.

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

    • Another question sorry, what stainless do u use in the turbo external WG plumb back piping? Is it 321, 316 or 304?
    • Right, its been a while for updating this car, but I made some small but important progress today. In the end I bought an Ecutek dongle from the Australian distributor Tunehouse (for local hardware support) but have gone with a remote tune from Racebox in the US (because they have done millions of these, and I could not find any tuner where I could access the tune anyway as they are all password locked). The App is reasonably easy to work with, but the PC software reminds me of Haltech's ECU Manager that you need to use with the Plat Pro ECUs, it is a nightmare.  Anyway, I sent the details over, got back a tune file and a request for data logs. I finally got a chance to access a private test track today as they want redline logs in 3rd and 4th, and have sent them back for the first round of reviews. The main difference in the tune is going from 1.0 (stock) to 1.3 bar (19psi), although I'm sure is a lot of other stuff in the background. Keeping in mind this is a dead stock car with 125,000klm, this is what the App's performance test claimed: Before After Interesting to note that both 400m tests had the same terminal speed (158klm/h) but different ETs. And no, the speed limiter seems to be higher than that at 186kl/h. Summary of the key logged parameters for the 3rd and 4th gear runs were: Those little turbos were certainly whizzing at 200,000rpm+.  Also I'm really not that excited about oil pressure 55psi at redline so I think I'll go thicker than 5w30 (nissan recommend 0w20....) and see if that improves it. Other than that (and the big boost spike....) everything looks good as a start to me.
    • Just one more post to show the final result and the original "janky" solution for a laugh. Everything feels really tight and no wobbling at all, very pleased 🙂
    • After drying a few days, time to put her back together 
×
×
  • Create New...