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The mkiv Supra Owners Club

broken bolt on crankshaft


jza800

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ok, is it posible to reuse the bearings on the engine.. if i take it out and get it fixed on the machine shop???

The new crank will have to be measured (plastigauge), to make sure that your bearing sizes are suitable. It's also advisable to have a crank checked for straightness, and also you might have to have the rotating assembly re balanced.

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If you are pulling the engine out and removing the crank fit new bearings, a new oil pump, new seals and fit a good crank, don't mess with that thing. Given the time and labour to strip the engine the price of a good used crank is neither here nor there. Put a new water pump and cam belt on it, replace all the core plugs whilst the engine is out.

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Did you take the crank out? I assume from the heat discolouration they MIG welded the hole up and drilled and re tapped the hole? Are you in the UK?

 

Hi Chris..

 

no thay said that the crank could be in the engine with no problem, so took the engine out off the car at delivered it to the machineshop, they took the rear main seal out with the 6 bolts, so they could put something behind the broken hole, and they TIG welded it, Little at the time, so it dident got to hot, and as the polot bearing dident melt, it wasent too hot,as they could touch on flancen with your fingers without burning them, so refuse to believe it has been too warm for that something could be damaged by that.. and i can now tighten it too full torque with no problem.. no i am not locatet in the uk..

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