Original Message:
I'm at a loss with the fuel line setup of the new HS6s. There are 2
tubes on the float chamber lid, obviously one is for the fuel line but
what is the use of the second tube.
Ken Nuelle replied:
SU H6 (TR3) carbs are as you describe. The second tube is, I believe, an
overflow which is normally directed toward the air cleaner. There is
normally a short (1-1/2" or so) length of rubber tube and then a short
length of steel tube bent about 80 degrees or so.
-------------------
I agree, but I've never been sure about the practicality of this
overflow! It seems to me that if one of my carbs overflow, this fuel is
not going to be somehow sucked into the air intake, but instead is going
to drip straight down onto the exhaust manifold and create one hell of a
fire!
On my TR3 I took two lengths of fuel line and routed this overflow down
next to the frame rail and below the exhaust to try to get the extra
fuel as far as possible below and away from the exhaust. (Somehow I
always like inline engines where the fuel is on one side of the engine
and the fire is on the other.)
Comments would be appreciated.
Frank
'59 TR3
(and 71 BMW 2002, fuel & fire on opposite sides.)
|