I've been reading up on safe compression. It seems as though most say 145 psi is safe and 150+ is not on pump gas. I checked mine today on a 2005 300 HPDI and it's 125 psi. What are folks running on these 300's safely?
Mike
I've been reading up on safe compression. It seems as though most say 145 psi is safe and 150+ is not on pump gas. I checked mine today on a 2005 300 HPDI and it's 125 psi. What are folks running on these 300's safely?
Mike
I think 135 is good on 89+ and 155 is good on 91+ octane... But I'm not 100% sure.
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
My recreation heads on a 300 are around 140. I was told by H-T to run 89 octane. I ran a tank of 91 real gas, actually think it ran slower. I could probably change heat range on the plugs and gain a little, not enough to really pay for itself.
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