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Old 07-31-2011, 06:14 PM   #1
MA70-3.0GT
12psi boost
 
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Join Date: Oct 2009
Location: Crewe, England
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Default Blown turbo (CT26)... oops!!!

Well as the title suggests I've finally killed off the CT26 on my baby, I was expecting it to go sooner or later as I've been running it pretty ragged on the boost front (11psi & using it regularly) but in the end it turned out not to be the death I expected.

Instead of just rapid wear of the bearings & eventual oil burning which I was expecting... what actually happened was the silicone BOV signal pipe ruptured (it's split at the ends before, months ago but thought I'd sorted it) which resulted in one huge compressor surge when lifting off that disintegrated the bearing, caused the impeller to bite into the compressor housing which in turn bent the shaft (and as I found out last night on stripping down, sheared the turbine off the end of it!!!)

All in all one huge turbo death & one very lucky me not to have an engine full of bits of impeller vane. So now I've got the turbo stripped right down to bare bones & the major castings are fine seeing as I didn't run it for long in this state as I knew something was badly wrong by the lack of boost & awful noise. What I'm wondering now is can you get turbocharger parts seperately of can I buy just a refurbished core to keep costs down?

When funds allow I'm obviously going further with the build, better turbo bigger injectors etc, but for now I just could do with the car on the road quickly and cheaply as possible (hopefully just a couple of months, till I get my compensation finally!)
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'89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit...

'89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks...

'83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks

'95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it
I'm not paranoid, they really ARE after me!!!
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