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The mkiv Supra Owners Club

UK turbos with ceramic turbine impellers??


Chris Wilson

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I have just examined a pair of UK spec, (4 bolt fastening) turbos that have come off Pete Sharps UK MKIV auto. As far as I know these are factory original, and they have CERAMIC exhaust wheels in them... Anyone else found this? I have little to do with hybrids or modding stock turbos, has anyone actually checked their unmolested UK turbos to see if the exhaust wheels are none magnetic ceramic, or magnetic steel? You can easily tell if the turbo is UK or J-Spec, the UK ones have 4 holes where they go over the exhaust manifolds 4 studs, the J-Spec ones have 3 studs in the manifold, and a corresponding 3 holes in the turbos.

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from many years ago I have this post

 

http://www.mkivsupra.net/vbb/showthread.php?s=&threadid=680&highlight=turbo

 

Shows the internals side by side.

 

I did hear a rumour that some US turbos have a different part number and a further rumour that they were ceramic internals, but never ever heard it from anybody ever again so cant say if its true or not.

 

JB

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Turbo Dynamics have had at least one set of UK spec turbos through their hands with ceramic exhaust wheels. I am sending them a photo of the turbine wheel, they can ID it against a pair they have there, as to metal or ceramic. The magnet test is inconclusive though, as the wheels can be Inconel, which is none magnetic, but obviously, metallic. I scratched the "nut" with a die grinder and it sure seems ceramic to me!

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I go to Berlin for a few days and what do I find upon my return :)

 

Well I never.....I bought the car off a Toyota Dealership in early 2002 and it was bone stock, not even an air freshener. The car was originally sold at this dealership and had been maintained all it's life 81K miles their also.

 

I did not ask if specific parts (bar cam belt) had been replaced but, nothing major turned up when they searched their records in addition to the paperwork I had.

 

Can you see the difference by looking at a photo ?? if so, could you post up a photo Chris ?

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I go to Berlin for a few days and what do I find upon my return :)

 

Well I never.....I bought the car off a Toyota Dealership in early 2002 and it was bone stock, not even an air freshener. The car was originally sold at this dealership and had been maintained all it's life 81K miles their also.

 

I did not ask if specific parts (bar cam belt) had been replaced but, nothing major turned up when they searched their records in addition to the paperwork I had.

 

Can you see the difference by looking at a photo ?? if so, could you post up a photo Chris ?

 

If I haven't sent them for rebuild I'll show you when you pick the car up Pete. Otherwise I'll get you some pics. The new hybrids definitely have metal wheels! Your exhaust gas valve butterfly was semi seized, I've found you a perfect one, and fitted that.

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