Jump to content
SAU Community

Recommended Posts

Yeah a proper front diff is amazing in conjunction with a rear one and the transfer.

Brilliant overall package.

Having my "time again", I'd put on -9s turbos ECU/Tune/Exhaust and then do the drivetrain - that's how good the gains are IMO from a driving point of view.

If you just daily drove your car, then maybe not as I did a lot of hillruns and stuff like that making use of it all

i wonder just how much modifying the nissan transfercase needs.

has any1 broken drive chains or stripped drive sprokets? or had the withdrawal lever deform?

ill be using all oem parts for my transfercase rebuild, appart from the N01 clutch pack.

anyone thoughts on other possible mods/improvements to components within the case?

More to it than just a adding in a plate IIRC. The price racepace and other charge is a full rebuild, so that's not just a plate anyway, it's everything being done as new. Certainly worth the money on the performance gain for the dollar scale, in fact i'd go so far as to say i'd do it as a second mod after swapping turbos if I had my time again as it's total car transformation level of improvement.

It's very unlikely there were any modifications other than replacing any worn bearings and seals, and adding one or more additional plates for a quicker response. I'd be interested in specifics if something else was done.

The plate replacement is very similar to reshimming the standard diff in process, and is equally effective; there is nothing wrong with the factory design except they are all a bit worn out after 20 years.

  • 2 months later...
  • 8 months later...

I have been told how good it is to do the modifications to the Trannie and as I will have the car in pieces I am doing it.

As Nismoid said,there must be more to it than adding a couple of plates

Has anyone any experience doing this mod and can explain it, I will need to have the trannie build for Dummies explanation :)

Its not the adding of plates.

Its the arrangement of them.

There are 19 plates in the standard setup, 12 outers and 7 inners to make up the clutch pack,

Outer = O, Inner = I when reading the layout below.....

Stock is IOOIOOIOOIOOIOOIOOI

Full max grip rearrangement would be IOIOIOIOIOIOIOIOIOI

You only need another old tranfer case to rip the plates out of to rearrange your old setup, scavanging the extra inner plates to use, you need to select ones of the right thickness to end up with the correct end clutch pack thickness so some mix and matching is required.

You dont need to go full grip, you can make up your own arrangement of plates like something in the middle like IOIOOIOOIOOIOOIOIOI

Same theory as playing with a Cusco LSD clutch pack arrangement, see page 9 below.......

http://www.cusco.co.jp/en/pdf/LSD%20Guide%20Final.pdf

  • Like 2

Good info GTRPSI - a question:

I have never had a transfer case apart - do the plates in the clutch pack have faces that wear? Is there any point in getting new plates or do you find the old plates generally or always serviceable?

Also another- I have heard that all transfer cases are not the same e.g. there is reliable info that the Stagea has 4 pucks pushing the clutch packs together while the GTR has 6.

But I have also heard tell that the R33 GTR transfer case is stronger than the R34 GTR - anyone able to confirm and say what the difference is?

My Mechanic said he would be putting new plates in the trannie and always does when doing a rebuild and adding extra plates.

Maybe just a business practice but I a happy to have all new plates while he is doing the build , seems the best way to go.

Think of the clutch pack like a motorbike wet clutch or LSD clutch pack, yes they have surfaces that wear on both sides of each plate.

You can pick and chose between 2 transfer case packs, pick different wear clutches to add or reduce the whole pack total thickness.

So if you have one slightly worn and the assebly total is a bit short you could use one or 2 with no wear inside the pack to compensate for the thickness missing on the thin one.

If they are all very worn you could add a extra plate to the mix.

Remember you need to get the snap ring that holds the whole assembly on to the drum so you cant go too thick on the assembly.

Picture of clutch pack plates in the external link below....

http://www.skylineowners.com/forum/30-parts-sale/142604-gtr-transfer-case-clutch-pack.html

Diagram of workshop manual layout, you can see the plates laid out, outer and inner order.....(post 15)

http://www.sau.com.au/forums/topic/149088-cant-get-attessa-to-work-properly-in-r32-gtr-for-track-use/

Edit; Close up of the friction inner...

http://www.gtr.co.uk/forum/165619-attesa-clutch-thickness.html

Obviously if its worn down through the friction base, its bin time....

Edited by GTRPSI
  • Like 1
  • 3 months later...

Although their boxes are smooth as silk, everything I've read and heard point to these AGY being a "circuit" box and not a "drag/hillilmb/dumbshit" box. I'm trying to get their synchro gear to go in my new box but it doesn't look promising :(

Hey ,

how it ended up with AG-Y ? Anyone know how to deal with them ?

Racepace offered us one already done for considerably less than that, id suggest picking up the phone and talking with them......(unsure if it was a one off built one ready to go that they wanted out the door though)

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

    • Thanks for posting, your engine bay looks tops. I'm fairly sure you posted the wrong video though, I think you were supposed to upload the one from your "private test road" where it's banging off the limiter with the gate open?
    • This is something to be careful of. I did a bit of digging on the NM35, as I spend a lot of time on near brand new cars and CANBus related stuff, which uses the same "OBD2" plug for a fair chunk of making my life easy. The NM35, does NOT support OBD2. The data pin is actually on Pin3, which is a manufacturer specific pin, and requires Consult3 to connect to the NM35. Your low voltage, is either because the NM35 doesn't have 12V to the constant power pin on the J1962 (OBD2) connector, OR, it is attempting the standard comms, (CanBus, K Line, etc) and can't see any voltage on those pins. Some people have had success accessing SOME data from the vehicle on OBD2 specification, using a module that supports KPW. My assumption, like Duncan has stated, it will likely actually be JOBD, where there is some cross over with the OBD2 and JOBD standards. Note, lots of "OBD2" dongles, do NOT support KPW, which is what you need for a lot of Japanese vehicles of this era (And even up until recent years!), EG, Subaru, Suzuki, etc.    The end of this thread is probably worth a read, as some people did find a way to get a display up in the NM35 recently, looks like someone implemented all the stuff needed to make it work. (The right protocols).  
    • Depending on the purpose of the car, and how much more fabbing you want to do, and what clearances you have, you could look to raise the motor, which will raise the front diff up. Likely would mean altering the chassis rails etc etc, hence the more fab work you'd need to do. However, this can create issues, not just in clearance with everything fitting under the bonnet, but you've also raised a LOT of weight up in the car, and this will DEFINITELY alter handling characteristics (But, so will how much weight you've already added to the front end). You'll also have to deal with the fact the gearbox to rear diff is now out of alignment too for the tail shaft, and alter the angle of the diff, or deal with a bit of potential vibration. Raising the motor an inch up, is effectively the same as making the whole car sit higher by not lowering it as far. So one inch higher motor, theoretically means you can drop the car an extra inch lower, and maintain the same angles in the CVs. Again, depends on the purpose of the car. If it's a just cruiser on the street car, maybe won't be an issue. If it's meant to be a time attack car, I can see you not wanting to raise the motor. This is just for you to ponder as an idea.
    • Have you not seen geospy.ai? It can now give GPS co ords to within a metre from a photo, even if it's a random photo you take inside. Supposedly at the moment only the government/law enforcement has access to that... Supposedly...
    • I've got the rear ones, they're certainly beefy. I need to take them to my driveshaft guru to check over, he's very fussy about the quality of components so I'll let you know if they are made of cheese by a blind man.   Are you in Australia? A mate just had a set of EN26 shafts made for his K20 Lotus by our fabricator which were quite cheap (compared to Driveshaft Shop) so if you can procure the CV's and draw what you need he'd make them for ~$800 for the pair.
×
×
  • Create New...