Offshoreonly.com - Fuel Additives ????

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Quote:

Originally Posted by MANITIE (Post 2723954)

I had a long conversation with the guy from SUNOCO Race fuels a couple of times.....and he said they could do something with a additive that would incress the profermance in the 525..I did not go into what they would do other then he said they could make a race fuel for the 525's...one of my issues was would it effect the 525 in any bad ways....I think he even said he called Mercury on this....he called me a few times to discuss it...but with us running at 93.5....I seen no reason to try to get anymore out of my engines....

GINO,,,,,,,,,,,,,,,,,you broke out ! 92 is the #. LOL

Quote:

Originally Posted by RichardClarke1969 (Post 2723663)

Higher octane fuel alone will not necessarily increase hp. The engine compression ratio has to be high and the timing adjusted to maximize the increased octane.

That is exactly correct. I used to race smaller engines, Watercraft, and the fuel ratios and octane ratings had to be exact or we blew up. We drained the tank if it sat more than a few days. I used to store my race jugs in a cooler with ice on it, so it didnt loose octane. Race fuel is basically a way to cool the motor, unless you are running something like tolene or oxygen. We also use to add phenyl oxide, which is similiar to nitrous. There are a lot of folks who can blend fuel to your specific set- up. If the compression ratio is not there, and the timing is not there-more octane and some times oxygen will burn to slow and you will detonate. I know it doesn't make a whole lot of sense. Think of it as burning cleaner and smoother- slower and longer. A lot of race fuels have a lot of lead, therefore lubricate. That will save the motor. I know the ratios we are running, and I dont see any benefit of running race fuel. That is a very elementary explanation. Hope it helps.

Cowboy
Crazy Chicken Crew

Quote:

Originally Posted by daredevil (Post 2724006)

GINO,,,,,,,,,,,,,,,,,you broke out ! 92 is the #. LOL

I know it puts me 1 1/2 mph below OPA and 1 1/2 mph above SBI.....but we have a easy fix with SBI.....if its humid and hot....she will only do 91.5 to 92....if not, we just add a extra 30 gallons of fuel.....

See ya next week.....

Quote:

Originally Posted by TYPHOON (Post 2723493)

Has anyone ever done a dyno pull on a merc. motor running an additive in the fuel? I keep hearing people talking about extra HP. but is it true? Is there proof?
MD

Randy, there are certain different additives you can put in the fuel to add more hp but they are definently not legal in our race boats. You got something up your sleeve for next year??:eek:
Jen

Yeh my fist if I catch someone using them in SVL.:drink:
MD

Quote:

Originally Posted by TYPHOON (Post 2724645)

Yeh my fist if I catch someone using them in SVL.:drink:
MD

:angry-smiley-038:

:mad::angry-smiley-038::angry-smiley-038::angry-smiley-038:

THE DIFFERENCE BETWEEN 92oct and 87oct is 7hp in a 525. more oct=less btu.

oxy fuel is about 30-40hp...on a 525...no joke! but have at it 15-20 bucks a gallon.

PO propylene oxide, Bad stuff cant be found in fuel after the race it evaporates.