I have got 9mm (3/8") fuel hose fitted on Time Bandit as this is what has to be fitted for any large E-tec. However I am concerned about the spigots on the fuel filter as they only have an internal diameter of 6 mm. These are the standard fittings that come with a Quicksilver type canister fuel filter and are meant for 3/8" hose.
Surely this defeates the object of having 3/8" fuel hose?
If you run an Etec lean then you will burn a hole in the piston so this is critical.
Any Thoughts?
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Chris Stevens
If you're worried about it take a trip to a hydraulics supplier and try to get a fitting with a wider internal diameter. You might have to warm the hose a bit to fit it though.
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I would use them. Yes the fuel must flow faster through there. But if its meant to have 3/8" hose, then its by default meant to have 3/8" fittings shoved into that hose with their resulting minor restrictions. Its not like its designed for a continuous 3/8" lumen. If that were the case they would be specifying even larger hose to provide a fitting with a minimum 3/8" opening.
I would be more concerned about any restrictions in your filter. Either inadequate design flow or partial clogs.
don't worry about it, the lenth of the hose will be the major restriction,
from my fluid mechanics days i remember the length of an orifice has as much effect on flow as the diameter, so a 1/4 spigot and inch or so long will only restrict as much as a foot of 3/8 orifice(being the hose)
You can get a lot of fuel through a 1/4 hole! more than most engines need, apart from maybe a pair of 3.6v8 2 stroke johnson 250s!!
White Noise
