Page 1 of 1
Modify fast-flow tap?
Posted: Sat Nov 05, 2011 1:22 pm
by bigmuff
My OMG fast flow tap is only flowing 3/4 pint a minute. I had already removed the mesh filter from the tap inside the tank. has anyone drilled them out to improve flow? If so where did you remove metal?
Re: Modify fast-flow tap?
Posted: Sat Nov 05, 2011 1:37 pm
by coaster
Was that measured on a full tank or was it only partly filled? Also, why do you need more than 3/4 pints per min
Re: Modify fast-flow tap?
Posted: Sat Nov 05, 2011 2:10 pm
by bigmuff
Had fuel starvation problem coming back from exmouth earlier this year. Stickys manual recommends 1 pint a minute so trying to get it flowing better before Warmwell as dont fancy another RAC trip.That was measured with half full tank. Would it make a difference?
Re: Modify fast-flow tap?
Posted: Sat Nov 05, 2011 3:35 pm
by shocky
all the passageways can be drilled out but the limiting factor is the rubber seal holes as ther a git to do properly the reserve normally flows fuel faster than the main
its a misconception that people think when the reserve is on that there getting 2 fuel feeds on, there not on most taps unless the quater moon cut out is modified to half moon
Re: Modify fast-flow tap?
Posted: Sat Nov 05, 2011 4:22 pm
by bigmuff
Didn't drill any of the holes but did open up the quarter moon slot with a dremmel. Didn't make any noticable difference. Did the same to a spare Cam Lam rear exit tap I had in the shed and then tried that. It flows 1 1/4 pints a minute on normal and reserve. Sorted. Not sure if cleaning the slot made any difference as had not measured the rear exit one before.
Re: Modify fast-flow tap?
Posted: Sun Nov 06, 2011 3:01 pm
by djh66
Is not worth £16 to but a decent fast flow?
Re: Modify fast-flow tap?
Posted: Sun Nov 06, 2011 4:38 pm
by coaster
bigmuff wrote:.That was measured with half full tank. Would it make a difference?
In theory yes but probably no noticable difference in practice.
Re: Modify fast-flow tap?
Posted: Sun Nov 06, 2011 6:03 pm
by bigmuff
djh66 wrote:Is not worth £16 to but a decent fast flow?
I thought I was buying decent fast flow taps. Didnt really need the rear exit tap on my S2 as I have more than enough clearance between tap and engine mount. I guess all fast-flow taps are not made equal. They were all bought off reputable dealers, not evil-bay. Happy with the cam-lam rear exit at 1 1/4 pints a minute. No point buying another so called fast flow tap just to get 3/4 pint a minute. The point I'm getting at is i have four fast flow taps either on scooters or as spares, just because they are sold as fast flow doesn't mean they are. I dont really want to spend any more cash on something that is not guaranteed to be any better than what I've already got.
I also like fettling, so if there is a way to improve the flow on a tap I wouldn't mind having a go.