Classic cars forum & vehicle restoration.

[Ray White]

This was my first venture into crack testing.

I have read numerous reports of spindle failure on MG TCs so with the hubs removed to replace the king pins and bushes I took the opportunity of crack testing them.




The kit consists of three cans. 1) a cleaner; 2) penetrant; 3) developer.

Following the instructions: (Wearing rubber gloves; a face mask and goggles.)

First I cleaned the part with particular attention to the underside radius area where the pin joins the upright.

Secondly I sprayed on the penetrant and left for at least 10 minutes.



Finally, I cleaned off the dye and applied the developer. Having left this to dry I inspected the suspect area.

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In this case I found no sign of cracking - so that was a relief.

[JohnDale]

Hi Ray, didn't realise this stuff was still available. We used to use the same(or similar) on crankshafts in the late '50s. Brought back some memories, cheers,JD.
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1958 Ford Zephyr Mk2 Convertible
1976 Ford Granada Ghia.

[Mog]

If you are checking for cracks on a cylinder head or block , you can fill it up with kerosene or paraffin . I am assuming that you have it dismantled . It will find its way out of a crack , maybe cheaper than getting an " expert " to do it !

[Brent29]

That looks like a great stuff! Good relief indeed it was cleared for cracks.

[Ray White]

[Brent29]

[Ray White]

Thanks. I will post more about how I get on when I do the other side.

So I can be sure how things go back together I am restoring one side of the car at a time.