F2 tank with K6 carbs, problem

[Trigger]

Just finishing off a little project and came across a problem. The fuel tap on the F2 tank fouls the choke lever once the fuel pipe is on. I know on the F1 the tap had a rear fitting for the pipe but, though I have a F1 tap, it is a different thread. Have tried a reverse outlet tap but, the pipe bends up against the rocker cover.

Anyone come across this problem before and any ideas on how to get round it ?

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[hairygit]

Probably because the F2 had pd carbs. Will the F1 tap accept the securing nut so you could fit the F1 tap into the gland nut from the F2 tap.

[Trigger]

Probably because the F2 had pd carbs. Will the F1 tap accept the securing nut so you could fit the F1 tap into the gland nut from the F2 tap.

Different size gland nut 

[JamesH]

Might have to use a pingel tap Graham..

[hairygit]

Unscrew the gland nut completely from both taps, then see if the thread sizes on the tap bodies are the same, if they are put the F1 body into the F2 nut.

[Trigger]

Different size bodies mate 


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[hairygit]

Oh well, it was just a thought The one in the middle looks like a pattern one.

Sent from my X6pro using Tapatalk

[Trigger]

left one leaks OEM, middle one £2.99 and put new Viton 0 rings in and doesn't leak, one on the right is OEM and cost £60, doesn't fit 

[hairygit]

Depends if you have a lathe, but you could make a sleeve for the tank spigot, as in make an internal thread to suit the tank thread, with an external thread to suit the F1 tap, but you'd need to use ptfe tape when attaching to the tank thread to avoid leaking or weeping. Shouldn't be too difficult with your engineering background!

[K2-K6]

Just had a look at my cbx750 and the tap has a rear exit for fuel plus a rhs (looking face on to the tap) vac switch line.  It's very compact and looks likely would do the job as the vac line just taps into to carb sync port on no2.

The big question is the threads. I've not taken it out but it's 22mm across flats for the collar. Tank spigott looks much smaller but without dismantling I can't give you the thread size.

[Trigger]

Did have a look at a few taps with vac on them and dug some old ones out to find that the vac housing sticks out too far.
The thread I am dealing with is M16 x 1.5.

[K2-K6]

The vac on this one is pretty small and looks well within the outlet stub in your original picture,  so from that aspect looks possible.

I'll keep an eye on here to see if you solve it before I get to look at this one. I'm working on it next week so if more spec's are needed then I'll post them for you.

Nigel.

[neat street]

Could you make a short `elbow` extension? just a thought?

[Trigger]

The vac on this one is pretty small and looks well within the outlet stub in your original picture,  so from that aspect looks possible.

I'll keep an eye on here to see if you solve it before I get to look at this one. I'm working on it next week so if more spec's are needed then I'll post them for you.

Nigel.

Cheers Nigel, did have a look about for a CBX tap, not ready availably on those. Got it sorted just by turning the tap round a quarter so, the tap lever is facing backwards and the outlet is now at the rear. Not perfect but, it will do.

[Green1]

I was going to suggest just turning the tap but thought you would just laugh at my simple but rather crappy solution.