hi, i have an A15 in my morris minor and was looking at getting twin webers, but i herd that it was hard to keep them in tune.

any information on this would be greatly appreciated

~n87

i have twin 45mm webers on my a15, I get it tuned up by a professional shop as i have heard it is really hard 2 do by yourself, i get it dyno tuned. i get it tuned around every 6 months

I dont think they are any harder to tune than any other carb. An understanding on how weber's work will be the big advantage. Personnaly I think 45's on a street A15 is an overkill. 40's would be better suited or even a single sidedraught.

Saying that however, it is a black art to extract every last bit of power out of an engine on a pair of twins.

well its for my play around weekend car so i would like it to have a fair amount of power (its fun seeing the face of the people in the doof doof cars when i go speeding past them off the line

but i guess what im trying to ask is that if you have one carbie and it gets slightly out, its not that notacable, but with two and they get slightly out does it make that much of a difference?

thanks for the quick response

If you buying weber's and ther not tuned for your size motor then the first tune witch includes jet's and venturies and what not then it's quite expensive. But once tuned correctly probly once a year would surfice on a road car..

Seems to be a common misconception that sidedrafts somehow go out of tune over time.

Once they're set up properly (Dyno to ensure correct jets etc) there's not much to go out of tune unless the idle mixture or balance is fiddled with or engine spec is changed.

A Dyno is not necessary to re-set idle mixture and balance - just need someone who knows what they're doing.

Carby doctor off lewis rd in knox victoria is a ledgend with pretty much any carby. Just ask grail3.

put up where you live mate, so people can recommend a good place to go to

NSW central coast, about an hour out of sydney

That's right. They are tuned the same way the stock Hitachi is: with jet changes and adjustment screws.

So
- Yes it is difficult
- No, not any more difficult than any other carburetor

Synchronizing twin carbs gives an additional step -- but this is needed wether it is factory Twin hitachis, Twin Webers or any other brand of duals...