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I have a crank pin cavity that is 9.5mm.

I have a screw-driver I'm using as a pin, with shaft that is 6mm in diameter.

I want to be sure that the pin width is sufficient to lock the engine whilst I loosen the crank pulley bolt.

Is there a general rule of thumb to minimize any risk to engine internal parts e.g. crank journals?

For example what if the bolt is a bit stiff? Perhaps a torque wrench would help to guage whether I'm applying too much pressure to loosening the crank bolt.

Jim
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1 Answers1

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My advice is to get a correctly-sized pin and use that instead of your 6mm screw driver.

You asked, "is it possible" and the answer is yes, it is possible, although not likely in my opinion, for the engine to be damaged by using the wrong sized pin.

jwh20
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