MoTeC Global Forum

hey guys, i am considering trying e85 in my race car. i have heard all sorts of stories in regards to power,AF ratio's, ignition timing, injector sizing.

what i am seeking mostly is information in regards to Lambda figures i should be looking for once i we start tuning.my application is an NA twincam multivalve 4cyl toyota engine, high comp, big cams etc

any help would be greatly appreciated.

regards

I've had fantastic results just tuning to the exact same Lambda as I would on normal FIA spec petrol fuel. You'll need approx 21% more in terms of fuel volume in order to achieve this.

Regarding ignition advance no special attention needed just go about setting it in the normal manner.

In terms of power output the results I've experienced are fantastic, in terms of BSFC the results seem OK but in all honesty my jury is still very much out on the issue of piston ring wear rates.

HI, I AM BUILDING AN ALL MOTOR DRAG CAR WITH TOYOTA 3SGE ENGINE ON METHANOL.
I SUGGEST YOU THAT YOU HAVE TO BUY AND READ THE FOLLOWING BOOK. 5000 HORSE POWER ON METHANOL. IT IS GRATE SOURCE OF INFORMATION ABOUT ENGINES ON ALCHOLS FUELS MOSTLY ON METHANOL BUT THERE IS
A LOT OF INFORMATION ABOUT E85 TOO.
ENJOY THE BOOK.

http://racecarbook.com/

GREETINGS

Would it be ok to mix 100oct avgasLL with 50% meth for an NA 4age?
Should I use Flex fuel pumps and injectors for this matter?
cheers,
jose

I think mixing that much methanol and LL Avgas you'd experience fuel mixture seperation. Also Methanol tends to be very corrosive if left in the system for any prolonged period of time. I see this frequently when racers don't purge their fuel systems after racing- it often wrecks the WHOLE fuel delivery assembly, more so if alloy components are fitted without hard anodising.
Stu

skyline_stu wrote:I think mixing that much methanol and LL Avgas you'd experience fuel mixture seperation. Also Methanol tends to be very corrosive if left in the system for any prolonged period of time. I see this frequently when racers don't purge their fuel systems after racing- it often wrecks the WHOLE fuel delivery assembly, more so if alloy components are fitted without hard anodising.
Stu

I was thinking the same thing if it for an aircraft - which the username suggests.
Probably good for a stunt plane or race plane, but I would hate to have it sit for weeks...
Most people flush the engines fuel system out with gasoline.

The amount of lead in LL (low Lead) Av gas is astoundingly high. You would not want to run a CAT behind it.

I always thought it to be low as the name stated. Is it worse than normal leaded fuel?

Martin wrote:I always thought it to be low as the name stated. Is it worse than normal leaded fuel?

Rarely are things as they appear...
It is only low compared to the old school high lead Aviation fuel.

This http://www.ethanolproducer.com/article.jsp?article_id=1647 says:
In fact, avgas has four times more lead than was used in leaded automotive gasoline before it was banned from use in new cars in 1973.

It would kill a CAT faster than glycol.

If the lead content is a problem, switch to a lead-free aviation fuel as we use at work. There a a few out there but the main one i work with at work is F44 but it has a different name in civilian life.

Why not attain some E98 instead of usin AVGas? JPx anything can be forgotten in any car as it is mostly the same properties as Kerosene and Diesel.

The cost of E98/gallon (per 55 gallons DRUM as that is the only way to source in the US) is more inexensive th AVGas/gallon....