Fuel consumption at idle

[Mick6186]

Can anyone give an estimate of how long it takes to use a UK gallon of petrol at idle on a 1700 tall block. The engine has L14 cams with 1.625 inlet valves & 1.4 exhausts, running dellortos on big valve chokes & jets.The engine idles smoothly at 900 rpm,
Thanks,
Mick

[RichardHawkins]

Mick,

I don't know the answer to your question, but curiosity has got the better of me. Why do you need to know?


Richard Hawkins

[Chancer]

Between 1/4 and 1/2 of a UK gallon per hour.

The idle mixture and carb balance will have a huge effect on what end of the range your engine is, that said large valve duration and overlap is not conducive to efficient idle combustion.

[AHM]

Disconnect the pipe at the tank
Stick it in a container with the measured amount of fuel
Start engine
Start stopwatch.

You will need to be a little more precise
A. So that you don't set fire to your car and B. So that you get an accurate result

[Chancer]

They look suspiciously like the stainless steel repro ones that I bought recently on E-bay after a posting here alerted me to them, they were very cheap and will do me fine but not for someone wanting originality.

I do hope that I am wrong.

[pharriso]

Wrong thread?

[Chancer]

Yup, I was just wondering what had happened to my posting about the trim rings

I blame the forum software, then my computer, then the keyboard and if none of them will accept the blame then just maybe its me having another senior moment!