Hi Ian
Thanks very much for the reply. I may get back to you on the adaptor. My bike is a later one with the coil ignition set up and I need to pull it out of the shed to see how much room there is around the carb.
Has anybody tried a Mono bloc on these bikes?
R
John
Hi John, that\\\'s interesting re the concentric float height, would I be right to assume it was too low? Only thinking that on the basis that there isnt much space for it to be too high on a concentric before the float hits the body.
I\\\'ve fitted a new concentric 626 to both my M20\\\'s and on one the tickover isn\\\'t as smooth as I\\\'d like, and there is not as much effect on that from pilot screw adjustment as I\\\'m used to finding with these instruments. Any thoughts on that would be appreciated please.
Another carb issue I\\\'ve been aware of for a long time when comparing original Amal and modern reproductions regards monoblocs -
The originals had no sealing washer of any sort between the float needle housing (under the banjo) and the body. All the replacement carbs I\\\'ve seen have a fibre washer there. Surely that is going to raise the float/fuel height?
Old carb lore says the correct fuel level on a monobloc is indicated by the \\\'pip\\\' near the middle of the float chamber cover. But the only way to see the level of fuel with the lid on is to run a stand-pipe from the main jet cover nut...
Rupert.
There are two versions of monobloc carbs - one with and one without the fiber washer. As I discovered after much tinkering, the needle seats are different and they don't seem to like being mixed up. I also suspect it is possible that the body is machined differently there too. as for float levels, there are a number of tools that can be used to check this. the one I like is this one:
Hi Cas, thanks for clarifying that re monoblocs with or without the fibre washer. I never saw one with the fibre washer before the post-Amal replacements appeared in the '90's?
Concur re not mixing Old and new parts in that area.
Rupert.
