Jump to content
SAU Community

So, who wants to donate a gearbox...

Squizz

By Squizz,
in Queensland

 Share

Recommended Posts

predator Grand Master

predator

Posted
Posted

actually.. what am I thinking.. I have a free gearbox for you squizz!

an rb20 auto box! yours for absolutely free..

but get in quick, these things sell like hotcakes.. :cheers:

Actually here is one.. see what i mean: http://www.skylinesaustralia.com/forums/sh...ead.php?t=66175

SteveL Mentor

SteveL

Posted
Posted
Here's one I prepared earlier

I think that's ferni's old gb, and if so I've got those actual bits (or what's left of them) in my garage :mad:

squizz: it's good that your not interested in getting new parts....because you can't anyway. Original design 3/4 gears and associated components for R32 GTR's are NLA from Nissan :cheers:

Sydneykid Grand Master

Sydneykid

Posted
Posted

Hmmm,......let's work though the common causes.....

Torque, not enough to cause this sort of failure

RPM, not enough to cause this sort of failure

Traction, not enough to cause this sort of failure

Clutch, not usually associated with 3rd gear failures (that's a first gear, drive shaft and diff problem)

Lubrication, I assume it had good oil in it and it was carrying the right amount

Driver abuse, previous occurances may have caused it to chip or crack a tooth, this occasion was just the last straw

Damaged components following previous repairs. Did you have the gears checked prior to assembly? New bearings?

Faulty assembly, how was the end float? Gear mesh? Input and output shaft alignment? Cleanliness prior to final assembly? All the usual gearbox suspects.

I have yet to see one break for no reason, they handle way more power, rpm and traction than this. So whatever the cause, it has to be eliminated on the next build. Get any used components crack tested and ensure all the tolerances are within specification. That's about the best I can suggest.:rofl:

Squizz Grand Master

Squizz

Posted
  • Author
Posted

Hmmmm. Well every clutch swap (there has been four in the last 12 months) I get new fluids for the box and they have never pulled anything nasty and broken out of it as yet.

So as far as I know this is a 97000klm old unopened box with regular fluid changes.

Next weak is car repayment weak so sometime after that the box will be swapped (I hope if I haven't been devorced) and I'll have the other box taken down to see what's actually left inside it...

I think it was just too weak for my awesomeness and undeniable majesty...

EVO Cam Collaborator

EVO Cam

Posted
Posted

As Bob said I've done two boxes now, the first was to be expected (churping all 4 wheels in 3rd at redline), the second however was a bit unexpected, again changing into 3rd but this time the input shaft let go. This second box was a series 3 R33 GTR box with the strengthened synchro's also. BTW my GTR only has around 320 or so rwhp, so it's not putting out massive power.

I just got the latest box from Sydney for $1200 2nd hand (freighted) to give you an idea on $$$'s.

Good luck with it all...

Cheers Cam

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

    • GTSBoy
      R34 gtt rb25det neo timing belt kit

      By GTSBoy · Posted

      Just don't use ChatGPT or any other artificial stupidity for the equivalent of googling. Their demonstrated inability to discriminate reality from hallucination should be enough to make them totally untrusted. LLMs don't know anything and cannot think to even the smallest extent. They are just predictors of the next word, and that should never be confused with capability.
    • GTSBoy
      Another little story of weird shit happening

      By GTSBoy · Posted

      I think, given the usage model described in the OP, I'd never ever experience the wonders of the 400kW upgrade. What I really need is boost from 2000rpm and probably no more than 260-270rwkW. But I suspect that the highflow is not actually the turbo for that purpose, so I may in fact need to get a G25 or 30 or something right sized and very spooly. We shall see after it is tuned. I've had to back the boost and boost ramp off to stop the thing from pinging since the highflow went on, so I've been almost living the NA life for 9 months now! Injectors are recently in hand. AFM is in hand. Dyno is fixed. Just need to clear a queue of f**king Supras out of the way (and probably fit my new gearbox). So....some time this year? Lol.
    • GTSBoy
      braided lines for the turbos

      By GTSBoy · Posted

      For what I gather is a Sunday/summer car....braided is fine. You're not going to be left without a vehicle and you have plenty of time for inspection/maintenance. Oof. I wouldn't use them that way. They can probably handle the temperature** but the internal corrugations means that their flow characteristics are a bit shit. Lots of extra friction and pressure loss. Makes them flow like the next pipe size down. ** They are stainless, and the stainless can usually be at least something like 304L, which is pretty good at higher temperatures (unlike 316L, which I would use for a wrt/corrosive environment, but not a particularly hot environment). But the welding needs to be top notch. And even then, because you usually need at least one cone-seat end on them (because you can twist the hose and do up both ends at the same time unless one of them is a union) they can be prone to coming loose with heat cycles.
    • sunsetR33
      braided lines for the turbos

      By sunsetR33 · Posted

      I don't have the OEM oil feed lines though and the turbo-wraparound line is torn, only has water. My plan is to get replacements for these and just connect a braided line to there. And make sure it's leak free. Hoses like these are also sometimes used to connect external wastegates, so for an EGR I think you're good using them.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Alright I understand. The most likely case is probably gonna be that I just keep the OEM unit in the car as long as it works.
×
×
  • Create New...