Monobloc codes

[Jam23a30]

Afternoon all, a bit of a general enquiry. Is there anyone out there who could shed some light on the "differences" in Monobloc carbs.

I have a 389/241 fitted to my G5 and the original handbook suggests a 389/42 was fitted when new. All jets etc are correct and since many other parts seem generic can anyone explain the difference in the stampings or point me to where I can find out?

Many thanks

Andy

[SPRIDDLER]

389 is the carb type and the / suffix is the ref to how it's set up (jets, needle and slide).
To confirm settings look at your Owners Manual:

http://archives.jampot.dk/book/Owners_m ... n_Book.pdf

[Rob Harknett]

389 is the carb type and the / suffix is the ref to how it's set up (jets, needle and slide).
To confirm settings look at your Owners Manual:

http://archives.jampot.dk/book/Owners_m ... n_Book.pdf

Dont forget the bore size dia also.

[dave16mct]

389/241 was originally fitted to Norton Atlas and Matchless G15, both 750cc twin carbed.
Dave.