I don't know where Ralfross gets his "info" but i can safely say that he's usually so far off the money that it's almost better to do the opposite of any of his advice
As most of you know the CT20 is a boat anchor masquarading as a turbo
As for the CT20B it has a SMALLER a/r turbine housing than the CT26. It has a large compressor wheel inside what effectively amounts to a machined out CT26 front cover.
A great combo turbo using toyota bits is to use the CT26 turbine housing and bearing section and have a CT20B comp wheel bored out to bolt onto the larger CT26 shaft. You also need to machine the CT26 backplate slightly. The CT20B front cover just goes straight on with no mods. This "hybrid" turbo gives you the best of both worlds when it comes to toyota turbos and has been proven to be good for 350+ flywheel HP.
I had a hybrid made up for my GrpA and was happy with the results on 19psi. If i hadn't done the HG at Wakefield Park and gone crazy in the rebuild i would have just stayed with that turbo.
Mon, 02 May 2005 03:55
