Question about the NZ GT4 turbo

[RunningRich]

Confirmed info on mine. First registered April 94. Not unsual for it to take a while to register them given the $96000 ticket price. Mine was actually purchased by Albany Toyota's Manager and sold after a bit of use.

I have scanned the letter from toyota (with specific vehicle info deleted) so if you want a copy PM.

[subdo]

Do you other GT4 owners ever meet up?
I supose you're all over Nz eh.

Speaking of GT4SUM........his GT4 was in at the same Toyota Service place as mine 2day.

Hey , about the ct20 -I got told on the alltrac.net site that they rebuild the ceramic turbos (replacing the ceramic parts with steel) in the states. Yet when I tried to get it done here they told me you cant!

Whats the deal on that?

[RunningRich]

Do you other GT4 owners ever meet up?
I supose you're all over Nz eh.

We have had a few meetings, had 10 or so cars together at One Tree Hill a couple of years back.

[RunningRich]

Hey , about the ct20 -I got told on the alltrac.net site that they rebuild the ceramic turbos (replacing the ceramic parts with steel) in the states. Yet when I tried to get it done here they told me you cant!

Whats the deal on that?

Here's what Cully at Alltech has already written on the subject previously:
---
Basically the answer is this: CT20B's are rebuildable, but unless there's something specifically wrong with them it's not advised to do so. Ceramic turbine turbos are highly susceptible to failing after rebuild - the bonding between the ceramic wheel and the steel shaft often isn't strong enough to survive the disassembly-reassembly process. Usually any turbo that leaves here which is a rebuilt ceramic will have no warranty on it.

Replacement all-steel shafts aren't available for the 20B - Toyota don't sell the WRC ones separately, and no other third party manufacturer make them. That leaves the option of retrofitting another shaft from a different turbo, however this is harder than it looks. Toyota use a shaft profile that is different to just about every other turbo in existence, and at very least you'd be looking at a large machining cost on top of an expensive new shaft, IF you could find a suitable shaft to start with.

We've just recently retro'd our first steel shafts into a 2.5L TT (1JZ) Supra with good success, and potentially the same could happen for the 20B in the future, but I wouldn't be holding your breath that parts will become available.
---

Otherwise if they need a recon then they can be done - no different to any other turbo, you just run the risk of the turbine snapping.

Talk to Cully at Alltech for more info.