Buying Used turbo
07-07-2009, 03:14 PM
#3
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which used turbo?
(please OH gawd don't let him say Greddy...)
(please OH gawd don't let him say Greddy...)
07-07-2009, 06:50 PM
#7
U-Stink-But-I-♥-U
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I dont think you can determine shaft play just by feeling it. If it moves so much that you can feel it, it is REALLY gone. (Mine did when I pulled it.) But, it could be out of spec and you might not be able to tell with your fingers.
But to answer the OP, you should look for a turbo that fits your application, in flow characteristics, flange fittings, lubrication, cooling and clearance. I think that covers all the bases?
But to answer the OP, you should look for a turbo that fits your application, in flow characteristics, flange fittings, lubrication, cooling and clearance. I think that covers all the bases?
07-07-2009, 08:34 PM
#9
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Listen to Brettus, he knows what he is talking about here! I would buy a junked GReddy turbo and send that off to Bryan@BNR asap. Inexpensive and great option by all reports.
07-08-2009, 11:35 PM
#17
Turbocharger Guru
A mitsubishi TD05/6 has around .035" up and down movement and .015" in and out movement. With oil in the turbo, you shouldn't feel any in and out (thrust) movement. Up and down you should feel a little bit, but the rotating assembly shouldn't touch the end housings as you are pushing and pulling on it by hand.
A typical garrett has .030" which is a little tighter than the Mitsubishi or Toyota turbos which are a little less tight.
The thing about the greddy units is the CHRA being non water cooled. This causes rear journal bearing coaking which can't be seen unless you take the turbocharger apart. When it coaks up so much, the car will start smoking after 30-45 seconds after you crank the car.
A typical garrett has .030" which is a little tighter than the Mitsubishi or Toyota turbos which are a little less tight.
The thing about the greddy units is the CHRA being non water cooled. This causes rear journal bearing coaking which can't be seen unless you take the turbocharger apart. When it coaks up so much, the car will start smoking after 30-45 seconds after you crank the car.
Last edited by Bryan@BNR; 07-08-2009 at 11:39 PM.
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