Cylinder take-off for fuel diaphragm

[iDemonix]

Prepping the new engine for the frame.

The absolute LAST thing to do was to take the screw out of the take off, then put the nipple bolt in place so I can later attach the pipe for the vacuum for fuel diaphragm.



Round as a fat bird. Can't get it out at all, plus gas'd it and tried a wee tighten and un-tighten and it's like it's made out of cheese. Just getting rounder. Fucked me off as it's the last thing to do >.<

Anyway, I noticed there's a take off from the other rear cylinder that has a proper bolt head bolt in place, can I unscrew that and instead connect the vacuum pipe to that?

[iDemonix]

Just had a thought, if I can't remove it, won't that stop me from being able to balance the carbs? If so, bollocks >.< Take it the best option is take the entire engine to somewhere that could possibly drill it out without damaging the thread?

[speedy231278]

Is there enough left to cut a slot into it and try to unscrew it? You are right though, if you can't get it out, you won't be able to connect a vac gauge to that cylinder. Maybe a stud extractor would work, but if it's really soft the it might just tear the middle out. Having said that, that's pretty much how drilling works as supposedly it releases some of the stresses built up on the thread and makes it easier to turn. Don't envy you there!!

[iDemonix]

Good, Bad and Good news.

Good - Got it out! Was soft as shite. Managed to saw a slot in, hammer a chisel in and get it out with plus gas.
Bad - Put the brass adaptor in off the old engine, tightened it up, snapped it clean off in the hole.
Good - Managed to jam a screwdriver inside the brass sleeve and twist it out.

So now I've left the hole unplugged and carried on with the project. Does anyone know where I can buy a new adaptor, preferably one that's not made of cheese?

[RandomDan]

You poor bastard xD

Would a brake calliper bleed nipple do the job you think?
Could probably get one of them from anywhere and it may also be made of steel then instead of chocolate

[speedy231278]

You can still get them new, £2.50 plus post from DSS. 16214-MB0-000. They don't need a huge amount of torque on them, as you've found out! Alternatively, you could always use a vacuum gauge adaptor. Carbtune suggest you might want to leave the whole set of adapters in place with a short length of tube for the gauge that's blanked off to save the effort of attaching them next time. Not convinced that's the best idea myself....

[CMSMJ1]

Is that cylinder no 3 in that pic? It should be that one for the take off.

[Neosophist]

Your in luck.

http://www.carbtune.com/

Look at acessories on their website and you will see the brass adapters that are for permanent connection.

You put these into the blanked off holes on the other 3 cylinders when you are balancing carbs.

Since youve knackered the vaccum take off one and the fact youll need a set of them anyway when balacnign carbs makes good sence to get a set, there only 6 quid for 4.

[speedy231278]

IIRC they don't have the kit any more that came with four of those and the appropriate hoses and stoppers to leave them in place, buy I guess you could make your own up fairly easily. I'd be worried about something happening to them. Still waiting for a whole free weekend to sort mine out!

[iDemonix]

You can still get them new, £2.50 plus post from DSS. 16214-MB0-000. They don't need a huge amount of torque on them, as you've found out! Alternatively, you could always use a vacuum gauge adaptor. Carbtune suggest you might want to leave the whole set of adapters in place with a short length of tube for the gauge that's blanked off to save the effort of attaching them next time. Not convinced that's the best idea myself....

Wahoo!

I'll get one ordered. I can't afford carbtune's at the mo, if I had that money spare it'd go on parts for the bike! I'll use the drill bit method for now.