R33GTST vs R34GTT gearbox ... any better?

[Torques]

Hello,

As per title.

I'm driving an S2 GTST and the gearbox makes a slight whining noise in all gears - so possibly one of the shaft bearings(?)

Shifting is actually ok, except for 3rd to 4th which doesn't like swift changes.

I'm considering buying a brand new R34GTT gearbox and convert it from pull to push and sell of my old box.

My question:

Are the R34GTT boxes improved compared to the R33 ones?

 

[BK]

No, but yes. Yes improved on synchromesh design, not on geaset.

Not really significantly any better, and definitely not any stronger.

It's like having a series 3 GTR box synchro wise.

Read page 2 of this, I break it down.

 

[BK]

I mean go for it if you feel like starting with a brand new box with the updated and more reliable 3rd/4th synchro setup.

Your wiring noise just sounds like how they become after the gear mesh wears over time, not necessarily any particular worn bearing.

[Torques]

On 10/7/2021 at 2:21 PM, BK said:

I mean go for it if you feel like starting with a brand new box with the updated and more reliable 3rd/4th synchro setup.

Your wiring noise just sounds like how they become after the gear mesh wears over time, not necessarily any particular worn bearing.

Ahh .. OK .. it's a permanent sound, not dependent on gear selection. Sometimes it's almost gone (wishful thinking)

Earlier I found brass shavings in the oil. (actually the oil was slightly laced with brass particles)

I refilled with the OEM Oil which seemed to work fine.

The 3rd->4th reluctance / crunch is annoying. Especially under higher revs.

A gearbox refresh might be expensive and time consuming, that's why I thought of just biting the bullet  and getting a brand new R34 unit.

I think the 'conversion' to push is quite simple ... there are even markings in the cast for the R33 slave I heard.