DrewII, thanks for the link. Now all have to do is find my math handbook or remember how to compute the octane of E85. 85% of 122.5 octane and 15% of 87 octane is?

Water (water and Alcoho) injection is used commonly on forced air induction systems today. Some forced induction kit manufactures include water injection in place of an inter-cooler and some wih an inter cooler. It depends on the amount of boost they are trying to achieve and other factors I'm probably not aware of.

Speed Pro is a division of Federl Mogul. I have to call Federal Mogul again and ask specifically for LPG pistons. I looked on NAPA and found pistons (the usual) in the delivery spot they said L.P. gas pistons have a longer delivery time or something to that effect. So I emailed them. There response was in as much, we don't carry them any longer go someplace else.

It's plus, plus. These are numbers that have come about in 75 years IC engine development.

The type of fuel only determines your maximum compression ratio.

Larry

Ignorance can be fixed Stupidity is forever