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- #41
The T3 variants are the only used turbos you'll find in a suitable size. The garrett GT2560 is a suitable turbo but I can't think of any donors in your parts of the world for a secondhand one. A new one would be similar cost or more than one of Graeme's turbos.
Here are your options as I see them:
Used T3 or Holset.
New Gturbo from Graeme.
I'd wait a few weeks for Graeme to get back from his summer camping trip and see what options he can provide.
I also think if you are on a budget, I wouldn't be pushing the 1HZ too high for boost. In factory form these aren't suited to high pressure turbocharging.
I won't go the ball bearing turbo route because I cannot justify the added cost. I might as well go the gturbo. But I cannot find a cheap 1hd-t exhaust manifold in north america to cut down on costs.
Lshobie has informed me that he is currently using a precision 3231 with an internal wastegate set up running a .48 turbine housing.
Apparently he gets boost right from idle all the way to about 3000rpm. Before he had the .63 turbine housing and it started roughly at 1800rpm.
I cannot find any maps for this turbo.
So far I know that the stock ct-26 for the 1hd-t runs .48 turbine housing. Hense why it spools down low. Now I know that adding a supra compressor increases the boost. Another fellow on the forum had a few shots of the gturbo and he mentioned that it had a 65mm compressor wheel (inducer most likely).
Graeme also mentioned somewhere that he has custom turbines made and it still utilizes the stock ct26 turbine housing and a bored out compressor housing.