David Vizard routinely builds motors with 190 psi of cranking pressure and runs them on 93 octane fuel without issue, this is with Aluminum heads used , not iron.
He also clearly states that for every 1 point loss in fuel octane from a 93 rated fuel used he needs to drop 5 psi of cranking pressure out of the cylinders to not have a issue.
In light of this info I would have to say without question that a motor showing only 160 psi of hot cranking cylinder pressure should have no issue running without knock or ping on 93 octane fuel if the tune is right , the Intake air temps and coolant temps are within reason and the Cam of course is in right!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
|