Any alloy that has any metal parts is classified as dirty alloy and paid at a much lower rate, for eg alloy heads can't have any guides or seats etc.
Personally I would not waste my time even unbolting the alloy head off a briggs,I wish I got 50 cents a kg for a motor, around here they only pay .076 cents a kg for motors and 36 cents a kg for alloy including magnesium .
So if I go to where Norm goes instead of $87. I would have got $366.
Hmm I've thrown out a few trailer loads of motors and didn't get much but at 50 cents a kg I'll probably be scrapping good running motors.
I filled a 200 litre bin full of wiring once but got virtually nothing for it considering the time to fill the bin so never did that again.
If you are spending time dismantling motors you may as well drive around with a trailer picking up washing machines ,fridges , dryers for scrap steel as I see a few people that do that and it would make more money time wise in my opinion.
The only time if I was taking alloy off a mower engine is to smash it off with an axe or hammer and chisel.
Even mag wheels you need to punch the steel wheel nut inserts out otherwise the scrap price drops dramatically.
