ct26 turbine wheels, JDM ceramic versus USDM steel, differences? Are they noticeable or negligible? Options

[Darkchylde]

Soooooooo, I have had to send my 26 out to be rebuilt and in the process have found that the turbine wheels need to be changed. The shop that has the turbo says that they can't get the JDM ceramic wheels so they will have to use steel ones.

1) how will this affect my spool time/ Lag? (new to forced induction, understand the basics but am still a little fuzzy on the intricacies)

2) anyone know where to get the ceramic wheels?

3) any one have a JDM importers # or a 26 or 20b they can spare?

Thanks for your input and assistance all.

[delusionz]

thanks presure2, the exhaust side on a 26 is slightly larger than a 20b, i was told there was no point doing any machining or changing the wheel though so what's the secret?

and also our ct20b and ct26 turbos already started with a jdm ceramic turbine wheels which should have less lag to begin with

This post has been edited by delusionz: May 9, 2011 - 6:13 AM

[brenton1919]

[quote name='delusionz' date='May 9, 2011 - 5:53 AM' post='915482']
here some info from one of the guys who make the ats ct27 turbo.......................The CT27 at 20 psi on e85 will get you right about 300whp. However the E85 is going to require some larger injectors and a way to run them. A rom tune could be setup to run E85 using 75-80lb injectors, but the car would be too rich to run on gasoline. A "dual tune" for injectors that size is not really an option either.

The biggest injectors I can tune the rom tune for are 550's plus about 10% more using the ATS FPR. That's only enough fuel to support about 260whp at sea level (or 300whp at your altitude), that's only enough fuel for about 17 psi on a CT27 and high octane pump gas would also support that power level, so the E85 becomes redundant.

If you are planning on a stand-alone ECU, or 100% e85 usage I can come up with a solution.

Aaron
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606rwhp ATS 2.2 MR2

here's some more info..Owners with well maintained cars are getting 80k+ miles out of CT27's. The Toyota turbos do not have the large bearings that you are used to with your diesel applications, plus I think the turbo gets accelerated and decelerated more with a gas motor, hence the shorter lifespan.

......just a little bit not really on the spec side tho nobody really knows how they make there turbo's as far as all spec go just some of the key parts the main thing is that a ct27 was made to get up a mr2 up around 300hp to 350hp stock. are engines come with a little more power than the sw20. well yalls 3rd gen and my 4th gen. so just think of the ct27 as a upgraded stock turbo, nothin serious. because the sw20 motor comes with around 225hp 230hp if i am right maybe less and that car is lighter than our celica. so the ct27 is a nice STOCK! upgrade but yes if u want more power better flow upgrading to gt35r turbo would be better.

This post has been edited by brenton1919: May 9, 2011 - 7:00 AM