Dommie carb

I'd suggest a 928. My 88 Dommie has a pair of them. 220 main and 3+1/2 slide -for what it's worth. I think the cam is 'standard' although the bike is an SS. I first fitted a smaller number slide and filed it bit by bit until I was happy - and then bought a chrome plated one.

Sometime I've run it with one. Runs nearly as well but not so quick -especially uphill as it's only a 500 - so I'm back to the pair. Same jets+slide.

It arrived with a single 626 and was completely gutless. Probably more economical but then so is my pushbike.

Monoblocks are allegedly better - better support for the slide so less wear - and of course correct. And more expensive. I wish I'd bought them but one 928 came as a spare with the bike.

Easier to fit the standard air filter with a monoblock if you want to since although they are wider they are shorter.

I have run my 99 with a single and then twin 928s quite happily - the only real difference between that and a monobloc was that the monobloc gave better fuel consumption. I found no difference in performance between single and twin carbs, just it was more of a guddle to keep twin carbs properly in synch.

Hello has anyone tryed out a SU HS2 As they give the best MPG of all Carburettors There the same Carb fitted to My Morris Minor Traveler . But you may need to change the main jets to get top end power, Yours Anna J

For Ease of use on the road I prefer the Monoblock, Float much easier to get to, pilot jet accessable even possible to get the slide out without removing tank, Getting to the Concentric screws most awkward. Its a well known fact that the Conc was introduced because it was cheap to make. The much published benefits were hype and smoke in my opinion.