new memeber with fuel question

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02-01-2009, 11:10 PM

#11

Lynn E. Hanover

Fabricator

Join Date: Jan 2004

Location: Central Ohio (Hebron) Zephyrhills Fla.

Posts: 1,322

Quote:

Originally Posted by swerv_on' post='915840' date='Feb 1 2009, 12:12 AM

I know what octane rating means but I was wondering about issues pertaining to lead fuel regarding damage to a rotary engines components that are not in a conventional engine. Also I said that it was a boosted engine. But thank you for the input.

Also detonation in at least conventional engines is the uneven burning of fuel. Correct me if I'm wrong but that shouldn't be any different in a rotary environment.

-Spencer

The rotary was born in the 50s, when all fuel was leaded. The only current problems would be the reactor and the oxygen sensor.

Detonation is charge temperature dependant, and affects normally aspirated rotaries far less than similar piston engines.

It affects boosted rotaries far more than similar piston engines.

Lynn E. Hanover

02-05-2009, 09:19 PM

#12

CustomEngr

Junior Member

Join Date: Feb 2009

Posts: 10

Quote:

Originally Posted by Lynn E. Hanover' post='915869' date='Feb 1 2009, 09:10 PM

one problem I've run into with people (myself included) running race fuel for fun is remember to drain any unused race fuel, and run normal fuel through it soon after wards. Pump gas has added conditioners for things like rubber and plastic components, to keep them from drying out. Race fuel doesn't. I've seen race fuel destroy fuel pumps, injectors, hoses, carburetors, almost anything it comes in contact with for prolonged periods. I now run no more than 75% race/25% pump. Its cuts the price a little, easier on the components, and you still get the excellent throttle response and added power.

The people race fuel is designed for rebuiled their engines on a weekly (sometimes daily basis)

There are street version race fuels now that are lead free, and oxygenated that you can run straight, but if you think 5$ a gallon was high....

Which brings up another point..there is not just Race fuel and pump. I know VP makes about 15 different 'race' fuels depending on your app. Talk to a rep that knows the biz before choosing.