My fuel gauge doesnt work, but I think I had about a 1/2 tank. Never thought about fuel temps. I know after running hard the VE pump is too hot to touch, so I'm sure the fuel is hot. My 05' Duramax has a big fuel cooler right in front of the fuel tank, on the return line I believe. Maybe when I do the fuel cell I should look into a fuel cooler?

 

With a typical five gallons of fuel to start, I was typically slowing a full quarter second by the night's end running the 1/8th mile. I've got a bunch of sensors on the engine and trans that helped me become more consistent. But I was consistently getting slower. The night's first run was ALWAYS the quickest.

A sensor for the fuel is on the list but as it stands, I didn't need it to witness what you have: The IP gets hot! It's cooled by the fuel. That hot fuel flows back to the tank and warms that there. > Just like your charge-air, hot fuel is not as dense as cool fuel.

I fixed that . . . .

An AN8 (1/2" ID) fuel return line from the engine compartment flows to a large Bar & Plate type, fan assisted cooler. From there, the fuel returns to the tank's pickup reservoir. (You can see the Walbro fuel-pump mounted on the frame rail to the right). The sheet-aluminum shrouding is fabricated so as to allow only cool air in from under the truck, and wastes the hot air into the driver's-side fender cavity in the bed.





(That black spatter on the left of the cooler is tire rubber. Sorry you had to see that. )

 

Hmm, thats a very good idea. Thanks for the pics and info! I think I have the perfect cooler for it sitting under my work bench.