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914World.com _ 914World Garage _ Fuel milage for a 2.5 L 914-6

Posted by: FourBlades Nov 20 2011, 05:17 PM

I have a 10 gallon fuel cell for my IMSA car and I am starting to wonder if that is
large enough.

How far will 10 gallons take me at 75% racing speed with a 2.5 L six with 40 IDAs?

Before I weld up the framework for holding the cell I need to decide if this is big
enough.

Any experience and insight would be great.

Thanks,

John

Posted by: brant Nov 20 2011, 05:47 PM

my builder has put about 20 914 race cars together
his advice to me for track use:

4cylinder = 10 gallon cell
6cylinder = 15 gallon cell

you can always run a cell less than full (to cut weight)
and more capacity gives you the ability to do enduro events

that said, we go through about 5-6 gallons every 20 minutes with a 2.0/6 on the track. We use a tiny bit more when we visit sea level as we normally run small jets at 5500 ft of elevation.
brant

Posted by: a914dude Nov 20 2011, 05:49 PM

You should consider 8-10mpg.

Posted by: FourBlades Nov 20 2011, 06:49 PM

I am thinking of doing some road rally type events where you drive 250 miles every
day. This would be time/distance type events where you can't push much because
the road ahead is unknown except for pace notes.

I am thinking I need at least 150 miles of range between refueling.

It does not sound like 10 gallons is going to cut it.

John