https://www.amazon.com/MG-TCs-Forever-A ... 0731688775

-Bill

Hi Clive, I think we are talking semantics here. One can indeed easily tell the composition & thus difference between carbide, HSS, non HSS steel, cast iron, and other grades of steel. However each will also display different patterns and colors of sparks before and after heat treatment. Useful in d...

Steve, It is easy to determine the hardness of ferrous metals by a simple spark using a grinder to generate spark. See: http://www.machinetoolrecyclers.com/spark-test.html A more definite test would be a Rockwell or Brinell hardness test. https://www.reference.com/article/methods-testing-metal-hardn...

Interesting tutorial on setting valve lash if not supplied by cam maker. https://www.tildentechnologies.com/Cams/Tip_Lash.html and https://www.tildentechnologies.com/about.htm -Bill  

Steve, Personally,  would opt for blasting in isolated areas likely  to be impacted by collision damage. If the f. axle was damaged enough to require severe bodged  straightening, cracking may have ensued leading to attempts to grind cracks to ground zero & fill with some sort of grout. It might be ...

Steve, Looks like a bodged lipstick coverup repair on a damaged axle. Seems to me that if damage was from a wreck that frame would be impacted too. Any sign of repaired frame damage?Doubt that visible patches are a Factory fix as car build date  predates wide spread introduction & evolution of epoxi...

https://www.graemehunt.com/inventory/490/1933-mg-j2

Bill
TC 4926
Odessa, Fl

Jean,  I seem to recall some previous discussion on about the plugging up of the oil discharge holes in rockers. It revolved around the idea that when bushings were badly worm that excess oil escaped around rocker shaft & a bodge attempt to regain oil pressure was to plug up the small oil feed holes...