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Amal 626 concentric settings

I ve been advised by Burlen that if I go for a concentric, a 26mm Concentric carburetter is a good replacement with a 200 Main Jet, 106" Needle Jet and a No 4 Throttle Slide. Any experience by anyone with these settings? What are your thoughts?

Re: Amal 626 concentric settings

Assuming you are taking about M20 fitment follow the settings and jet sizes for the Monobloc carb used on later M20s as a baseline set up...It should run OK on those settings with only minor adjustments at most...Ian

email (option): ian@wright52.plus.com

Re: Amal 626 concentric settings

Hi, my experience with the 626 concentric is that, with the no 5 slide, the engine is jerking at low speed. Alsof the bike is not "picking up". The no.3 is working Just fine. Maybe I try the no.4 as adviced by Burlen.
Main jet is 230 (with airfilter).
John 🏍️

email (option): john.kater@chello.nl

Re: Amal 626 concentric settings

I am using a 3 or 3.5 currently.
The trick to smoothing it out is a long induction tube the longer the better.
The spacer off a WD B40 works really well
even better with a 1/2" wide tufnol gasket

Re: Amal 626 concentric settings


Trevor, I have a 40 mm. tube because you adviced me that a few years back. Also I have a no.3,5 and a no. 4 slide that I can use.

John

email (option): john.kater@chello.nl

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