Anthony_Demol58;46570 wroteThanks for the compliments on the bellhousing. Huge job though to get it right.
The new generation of oils have less zinc content, though I have noticed that the tenth racing full synthetic oil from Penrite has a very high zinc content, so I am thinking of using that on my next oil change. Not cheap though.
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Just on the steel timing gears issue, aren't they more noisy in operation than the fibre/steel gear combination?
I'd ask Penrite thru their advice line but... Unless your motor is a full rebuild and completely clean changing from "natural to synthetics" is not advisable because of the differing solubilities of the old grudge adhered to the interior of your engines...
The basic rule with buying an old car is run it on the same stuff as the previous owner and drive it as he did till you rebuild it totally...
re steel
yes they are noisy - er than composite but ... it is a 1970 engine so.. it is noisy...