TT carb on 18cs

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Jam2
Posts: 8
Joined: Fri Mar 19, 2010 9:47 am
Location: DUNEDIN NEW ZEALAND

TT carb on 18cs

Post by Jam2 »

After getting my dating certificate with my bikes build info. I found that my bike was originally fitted with an Amal TT carb
Now I've just managed to find one of these, a 10TT9. Its been around a bit & came fitted with jets for alcohol, not quite what I have in mind.
I'd like to fit it but I'm confused about jet sizes. My bike is a 1953 long stroke with the standard HL cams. I can only find jetting for the short stoke motor from 1955 -> (Bacon)which lists a 340 main. This seems a long way from standard 180 I have my monoblock.
I know I will have to tune the carb to my bike but I'd like to get the jet close to start with rather than buy a whole box full & then only use 1.
Has anyone got TT carb settings you could share please?

Thanks
Colin.
Marty
Member
Posts: 243
Joined: Sat Jan 01, 1994 12:00 am
Location: Newzealand NEW ZEALAND

TT carb on 18cs

Post by Marty »

Main 350 or 360, needle pos4, pilot .109, Throttle cutaway 6. This would be close with a 1 5/32" TT
Marty
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