I hope you know what you're getting into Dave haha.

Dave when I first mounted the 39mm flat slide carbs they were on an A12 with ported GX head and GX cam, it made 73 wheel hp. The motor would have been very streetable.

I would look for carbs in the 36-38mm range (these will be 750-1000cc bikes), if you can get a deal on the Keihin FCR carbs they are very good. There is absolutely nothing wrong with CV style carbs, if you get those see if you can get the air box off the bike as well. The motorcycle air boxes are very well designed and tend to be better than separate pod filters. Note I have no air filters on the race car just plain old velocity stacks.

There is also nothing stopping you from using twin carbs (like GX motor) there are several companies that made motorcycle carb kits for British cars and these used twin carbs. My Beta 520 enduro puts out 48 rear wheel horsepower and it has a 38mm Keihin FCR (mx) carb so a pair of those should easily flow enough for a mild A14.

With all that said I think a set of 38mm CV carbs off a 1000cc bike will be the easiest fit and the most versatile for street use.

Tom

600 cbr ones are good value. I like the cv only as they are like su's a bit.
Look at newer ones or ones with easy spare parts available.
If my diaphragms tear or slides need replacing it's $116 each X 4. All spares are needed in 4 if you need to reco.

Of you find 1000 or 1100 cc bike carbs you might get running easier with only adjustments not new jets and needles etc on a a 14

Thanks tom so what carbie would u suggest?

Ok I will be contrary: keeping in mind I have a bike background I found the flat slide carbs to be no more or less work then any other carb. The deal is you need a custom manifold which I was lucky because my set up included a custom A series manifold. As for tuning CV type carbs will tolerate the jetting being off a little more than slides operated straight off the linkage. Note I have seen people with DCOE carbs that ran horribly. As far as the custom manifold there are enough photos on this site that would allow you to get a very good idea of what you need. Again any carb will need some level of tuning.


Tom

Thanks guys

No offense intended but do you have the patience for them? I'm saying the $$$ in setting them up (getting manifold made and carbs) and tuning the ratios your self it's literally couple months and it's still not 100%.

Stay with weber. Easy simple and proven. I'm just a sucker for punishment

hey mate
Personally,id go twin webers.
From what i've read, tuning bike carbies on car engines takes alot of time,patience and effort.But once done right they are awesome,

cheers

I have just finished building a mild A14 and I was thinking about getting some bike carbides on it rather than just the single down draft that I have.
Can some body suggest some thing that would go well and be reliable.