LCGB Forums

I've recently gone back to a solid mounted jetex. And I understand that frothing could be an issue. But a rubber mounted carb, never felt secure despite trying different rubbers.
When my PWK fell off again, I thought f*** it and put the jetex back on, not expecting the same performance than the more modern carbs. But, it works a treat now it's got the proper slide and jets (all).

Opinions on rubber mounts???

Cheers

(You've invited opinions, & this is mine, should anybody feel like doing a bit of sniping....)

If you can conveniently, reliably rubber mount a carburettor, it must surely be best to do so.

Unfortunately, as can be judged from the many experiences on this Forum, there can be problems & my belief is that you should be very selective as to what mount is chosen, the rubber shouldn't be too hard, the location ribs/groove(s) must match the carburettor/manifold & the hose clips should be of the correct width & not over tightened.

Personally, although the thought had crossed my mind, I wouldn’t go to the trouble of converting a solid mount (an Amal Mk 1 or VHB, say) if there could be a sprung float needle tip fitted, as in the case of the VHB which can take the type fitted to SH2/22’s.

On the other hand, rubber mounting of the exhaust can reap many benefits, Clubman type included.....

If you're happy I should leave it at that. Keep things simple and easy to maintain. That's my view.

Rubber mounts always sound like a bit of a lottery to me. Some swear by them, and others swear at them. Although, I remember someone giving some very good advice not to over tighten them. Because that will effectively squeeze them off the mounting.

A bit of Quality Silicon gives some extra adhesion and confidence on rubber mounts, the Loctite stuff you get in Halfords is very good

Thanks for the replies. I really liked my PWK, but it along with the Delorto, never seemed to sit right and the 28 Delly was just a big lump.
I will probably swap again, you know how it goes ,but at the minute, the Jetex and Italian cylinder seem to give you confidence of belt n braces, if going on a run.

the big problem people have with rubber mounted carbs is over tightening the jubilee clips which will cause the rubber to pop off the carb or the manifold this is not helped if the manifold hasn't got a ridge in the bit the rubber pushes over also an ill fitting rubber won't help. I've been using rubber mounted carbs since the early 80's and not had one come off yet