Jump to content
SAU Community

R33 gtst Gearbox questions

CEF33Y
 Share

Recommended Posts

CEF33Y Experienced

CEF33Y

Posted
Posted

Hey guys, so in the middle of pulling apart my R33 gearbox.

It was noisy in first and second gear, third and forth noise pretty much goes away.

I’m up to pulling speedo drive sleeve off, but have to modify my puller set to fit, so it’s not fully pulled down yet. 

The question I have for now, the input shaft bearing and the bigger bearing in the centre plate are rubber sealed bearings.

Now, from all the googling I’ve done, I’ve not come across any pics of sealed bearings. 

I would have thought the bearings need to be open to ensure adequate lubrication. I mean, the factory Nissan bearing is open...

The input bearing feels ok by hand, keen to see what the one in the center plate feels like.

Any gearbox guru’s have any thoughts on the use of sealed bearings?

 

cheers

Link to comment
https://www.sau.com.au/forums/topic/481738-r33-gtst-gearbox-questions/
Share on other sites
  • 3 weeks later...
  • 3 weeks later...
CEF33Y Experienced

CEF33Y

Posted
  • Author
Posted

Bit late to reply, But yeah, the CBC kit I got came with the sealed bearings, on which I've removed the seals.

Just got it back together last night, hope to have it back in the car tomorrow. Pretty happy with the CBC kit, even came with 1st gear bush (which looked average on mine, burred on the edge where it looks like they've used an ill fitting pipe to drive it on). Someone has had this apart before and did a average job putting it back together.

The needle bearings on 1st and 2nd gear felt terrible as I was pulling it down, and popped the seal off the (old) bearing in the center plate and there was alot of black deposit, and the oil in there was much darker than the oil drained from the Gbox.

 

Anyway, will see if the gbox noise has gone soon enough!

  • Like 1
admS15 Grand Master

admS15

Posted
Posted
  On 12/02/2021 at 3:23 AM, hardsteppa said:

got to say, they are a fairly noisy box IMO . Still hear alot of operating noise from mine even after the full rebuild, but have come to love it 😛

Expand  

Couldn't agree more. After going from a 22 year old box to a brand new one, it wasn't quieter at all to the ear. 

Yes that's right, wasn't (past tense). Said new box went to gearbox heaven prematurely. 

CEF33Y Experienced

CEF33Y

Posted
  • Author
Posted

Hey guys, feel free to add any info to the thread if you feel its relevant, thats the best part about forums.

 

So, updating, as the box is back in the car, and to give the thread some closure.

Much anticipation I started car, and slowly released clutch, aaaand the noise is still there. Bugger. Probably a bit better, but hasn't "fixed" the noise.

So ultimately its got to be the gearset.

I also put a new syncro in 2nd gear, and the shift into second feels better, so along with the experience of actually rebuilding a box, it wasn't a complete waste of time (pretty close though, haha).

 

Plan from here is to keep driving/drifting with this box until it lets go, then probably buy new. I don't think "low km second hand" boxes exist anymore. And I'm not making the power where I think a gearset is warranted.

 

Thanks for the advice/help guys

 

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

    • joshuaho96
      Potential MAP Reference Point

      By joshuaho96 · Posted

      Isn't there a fitting on the back of the balance tube? That's what the OEM boost gauge uses.
    • GTSBoy
      Potential MAP Reference Point

      By GTSBoy · Posted

      Getting a decent signal from all 6 throats is a challenge. I don't know for sure, but I suspect that the stock balance tube is not ideal for it. I have done it on an ALFA 4 cylinder (about 35 years ago, so don't ask for too many details). We drilled 4x holes in the manifold runners, put in some fittings and ran hoses to a decent sized (I think it was about 20mm diameter) pipe that ran the length of the inlet manifold. So, it was quite a decent volume. There is a "tuning" balance to be found between the volume of the common plenum on such a thing and the diameter of the pipes running from it to the runners. You need the volume to be large enough to damp out the sharp spikes in pressure signal you get as each runner gets sucked on by its cylinder, but not so large that it becomes too slow to respond to actual changes in MAP. And you need the hoses to be small enough to transmit the signal quickly, but not so small that they delay the signal. You might have to have more than one go at it, if there isn't any actual success based wisdom to be had here. Hopefully there is. Anyway, I would not do it on only a couple of cylinders. I would also not care about "permanently modifying a part". Just bloody drill holes and make stuff better. There is nothing sacred about any GTR unless it is a genuine museum piece that you shouldn't be modifying at all anyway.
    • MBS206
      NC MX5

      By MBS206 · Posted

      He's still joining you, he's just delayed it and won't have the fulleh sick ITBs...
    • Kinkstaah
      R34 GTT front hood lip

      By Kinkstaah · Posted

      The strange thing is this is a URAS front bumper (or clone of it). The bumper actually does not sit flush with the GTT hood - You need the addon to make the hood 'long' enough to reach the bumper. I have no idea why they didn't incorporate this piece into the bumper itself.. instead of sticking it to the hood instead.
    • AdiR34
      R34 GTT front hood lip

      By AdiR34 · Posted

      Another thought on this OLD topic: When you paint your bonnet lip, leave a small unpainted back lip/line along the back of the lip, where it rests on the bumper. That way, the line in the back is much more prominent than the gaps in the front/under the lip - and it breaks the hood-to-bumper connection at the "correct" place, when comparing to a GTR. I'm gonna do this with mine this week, so stay tuned for pics!
×
×
  • Create New...