Re: Re: Re: Re: Re: H that keeps running after it

Posted by Dr.EVIL on September 29, 2003 at 11:46:57 from (12.4.181.2):

In Reply to: Re: Re: Re: Re: H that keeps running after it is s posted by the tractor vet on September 29, 2003 at 08:40:16:

MAN..... Someone else who understands Gasoline! Your exactly right, High octane resists the chemical change the gas/air mixture has to go through under high heat and pressure before it actually burns. IF this chemical change happens too soon or too easily the combustion event starts WAY too soon. And that increases the tempurature of the spark plug tips, valves, piston tops, etc. Drastically. Lot's of "Experts" have told Me You don't need Premium Gas in a 6:1 compression engine..... but I still use it... along with a gallon or two of leaded race gas per 5 gal. of no-lead. Your right about plugs too. Any Farmall should run fine with a D-16 or D-15Y plug. If Your pulling Your Farmall hard with a D-21 something is Seriously wrong! I'd expect it would burn valves, detonate, maybe even break pistons from over-heating them.

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