Just picked up this Turbonetics T3/TO4E 57 trim .63 a/r exhaust up for 150 bucks online. Spins freely and was used last winter. Only issue is 1 blade is bend slightly and one is chipped . Do you guys think it needs new wheel and balancing or can I get away with one season on it like it is? I realize that one gram can throw it off balance and destroy motor /turbo.Just wondering what you guys think. How much is it usually for someone to rebuild this? Pics below , Thanks for your time guys
hold on i know common sense might tell you scrape it but i fixed many worse blades on turbine engine. the question is can you fix it and drive with it YES you can. your going to lose performance no doubt. if you plan on buying a new wheel try clipping and blending that one, run it and if it doesnt work you got a new one anyways. if you want to give it a try ill give info on how to clip and blend.
he already knows its damaged. im not telling him its not and im not telling him that this will fix it. im telling him he can make it work (cant tell him how the turbo will flow) until hes ready to buy a new one.
tin snips, neutral (no left or right hand you dont want an angle on it)
metal sanding file, coarse and fine.
ruler, if you can find a lil metal 6 inch ruler that would be great but you need some kinda ruler
step 1: you want to cut as much of the damage area as possible WITHOUT taking to much out. like this
step 2: measure out from the center (along the top of the leading edge) to where you cut. then measure from the root (where the blade meets the wheel or bottom) to where you cut.
step 3: repeat the steps backward (measure then cut) to the blade 180 deg (the one right across from the damaged one).
step 4: you want to file (start coarse the then fine) the cut you just made down so that there is no high metal and so that the pitch of the blade matches the others as best possible.
as for the blades with the leading edge damage follow step 4
If you don't want to replace the wheel you can build the chips up with weld and reprofile it and balance. I've done it many times for rebuilds at work for oddball turbos with no readily available wheels.
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