Fuel Use at Track?

[Dave B]

Has anyone taken note of how much fuel use you use at the track>? I know almost anyone says " a lot" but recently I was caught out at a track day at Canadian Tire Motorsport Park (Mosport). This is a very fast track with a lot of time spent at full throttle and I had about 2 hours of track time. Arrived with a full tank and 2 jerry cans of about 18 litres (about 5 gallons US). Car ran into fuel starvation in right handers with about 3 US gallons left in the tank after about 45-50 minutes of track time. Had to buy track gas (which was very expensive) but was ok for the rest of the day with the fuel I brought. Might have made it through the day with the 2 jerry cans but wanted to be able to drive home. Please note that I am on stock tune and no bolt ons. Interested in how much more fuel is needed with, for example, an off the shelf Hondata tune.

Should I arrive with more jerry cans? Not all tracks I attend have fuel for sale.

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[NapalmEnema]

45 minutes of straight hooning sounds about right for a tank of gas. Are you tuned or stock?

 

[Rmbrady]

I can get 2 sessions (20-30 mins each) at a HPDE with a full tank. Car is stock. My biggest gripe is that the fuel gauge doesn't read correct when burning through fuel, and it seems like it takes a while before it gets back to normal after a track day.

 

[Dave B]

I agree, the gauge is pretty useless. There is obviously some issue with fuel pickup as well as when my engine started missing (in a long right hander), I still had about 3 US gallons left as judging by how much fresh gas I could put in.

My motor is stock for now, but I am guessing that increased fuel requirements are about directly proportional to increased power.

 

[.grimace]

28mpg on the streets and 8mpg on the track. Sounds about right. Never go out on track with less than 50% fuel just asking for problems

 

[Tonycivicboi]

With gas prices so high, I can barely afford my car payments so I stopped tracking. Got like $400 in the bank

 

[keller]

I used to have fuel starvation in right handers before when close to 30% of tank. Now I never go out below 50%. The gauge is fine after a short rest. I'm doing an average of 2.5km/l (6mpg), so I take 80l with me.

 

[MadMage]

I get about 6mpg on the track. Sometimes as low as 5.5mpg. Will always get fuel starvation in the corners (never noticed it was right or left) at 1/4 tank. Gauge is not reliable on the track, and I don't start a 20 minute session with less than 1/2 tank. I basically add 5 gallons after session 2, and then again after 3 or at end of day before going home (depending).

Considering one of those Holly fuel mats, but... easy enough to just keep enough fue in the car (if I was doing endurance, that would be different).

 

[Dave B]

Seems that gasoline is about 6lb per US gallon so the extra weight is really not that much.

 

[Eugene_Fk8]

1 and 2/3 tank over 4 session. I used E35 blend and its like keep refilling it to make it at least half tank full.

 

[AlphaDigital]

Ill do 2 20 minute sessions and go fill back up usually.

 

[m6ic]

I find that after a few turns on track my fuel gauge would become completely useless - it would stay at the "full" position until the next time I fill the tank completely. Eventually I just measured the distance I travelled and the fuel used for the distance, and found that it was around 25 L/100 km. Now I simply look at the odometer and refill after driving 80 to 100 km on the track.

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