Carb syncing fuel question.

Originally Posted by Serdna

I just added a bit of fuel line about 10 or 20cm long to the front vacum take off and blanked it off with a bolt. Works a treat. it pokes out by the radiator/coolant resevoir. I put bit of tube on the tank vacum and just give it a suck occasionally to fill the float bowls. You wont get fuel in your mouth because its just vacum working a diapragm. Obviously if you suck that pipe and get fuel in your mouth your diaphragm is faulty, but you would probably have running issues already if thats the case.

Any chance i could come around and use your gauges sometime next month? Im only in oxford.

What do you screw in the take off point on the front, I know there is a blanking plug but what do you replace it with to put the tube on, also what dimensions are the tube.

I gather I could do same with the vacuum hose, put a 'T' in with a pipe coming off and blank it off with a bolt.

[Dipper]

If they were around when I did mine I'd have bought a set of extensions from Bibio http://www.svbits.co.uk/

Originally Posted by daveyrach

What do you screw in the take off point on the front, I know there is a blanking plug but what do you replace it with to put the tube on, also what dimensions are the tube.

I gather I could do same with the vacuum hose, put a 'T' in with a pipe coming off and blank it off with a bolt.

I think it was 4mm fuel hose from halfords but its been a while. Just a short bolt that is fat enough that it bites into the rubber hose and seals the hole.
So at the moment i think there is a rubber grommet covering the front take off. You are going to pull that off add a bit of pipe and then blank off the end of that pipe. I really wouldnt bother adding a T on the rear as access is so easy but obv its up to you.

If you want a hand either bring the bike up to oxford or if you can wait ill have mine MOTed by the middle of april and can come to you. Obv i have a vested interest because i want to use you r gauges

Originally Posted by Serdna

I think it was 4mm fuel hose from halfords but its been a while. Just a short bolt that is fat enough that it bites into the rubber hose and seals the hole.
So at the moment i think there is a rubber grommet covering the front take off. You are going to pull that off add a bit of pipe and then blank off the end of that pipe. I really wouldnt bother adding a T on the rear as access is so easy but obv its up to you.

So the hose just pushes into the hole in the intake?

[Sir Trev]

I used to get mine running and clamp off to maintain the vacuum before removing the tube to plug in the rear gauge. My front extension was made up of the CarbTune tubing which I left in place with a self tapper in the end. Chap who bought my bike was well please to get the rest of the tubing so all the legths matched (basically I could not be faffed to take the extension off and the remaining tubes were therefore no use to me).

well it goes around the outside of the little vacum lug that pokes out of the carb. If you get the tank up follow the short, smaller diameter rubber hose from the petrol tap to the carb. You will have the same fitting on the front carb but instead of a hose to the tank tap its blanked off.

Cheers guys

[aesmith]

What vacuum gauges do you guys use? Last time I had a twin I used to reckon you could balance it pretty well by ear, but that was a parallel twin with even firing intervals. It was also a long time ago when I was more of a cheapskate. Then when I had a four it was always done by a dealer.

[yorkie_chris]

I like carbtunes