Quote:
Originally Posted by NMs14.5kouki
where did you get a new cartridge replace for ~$400?
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From my Garrett dealer, who, from my understanding is one of the largest in the U.S.
When I scooped my 2871 up from my friend, I pulled it apart and had it sent out to my dealer for inspection. He advised me that all of the blades on the exhaust side were chipped. Apparently, something went through my friend's motor and chipped all of the exhaust blades. My dealer stated that it could have been as little as half of a pencil eraser and given the size of the chips the turbo was probably 50% inefficient. My friend was running a cheap Chinese manifold at the time, so it's possible that a booger weld could have broken off and found its way into the exhaust side of the turbo, causing the chipping. Having discovered that the turbo wasn't in the pristine condition that my friend thought it was, I asked my dealer what should be done. He advised me that, at this point in the game, Garrett dealers are now supplied with complete cartridge replacements, rather than the various pieces that compose the cartridge. This keeps it simple for the dealer and end user and comes at the price of ~$400. The turnaround is 1-2 days tops.
Moral of this tale: be careful of the quality of manifold that you run. If it's low quality, it may have "booger welds" inside of the runners that can potentially break off and go through the exhaust side of the turbo, chipping the shit outta the wheel. ANY chip on the wheel affects efficiency -- it HAS to. By design, no turbo is 100% efficient to begin with and chipped blades only increase inefficiency. To what end/point do you deem that the condition of the blades is worthy of replacing the cartridge is your call. Just don't get it twisted and believe that chipped blades don't increase the turbo's already inefficient design.