G5 - Monobloc setup

Information relating to the Matchless G5 or AJS Model 8 350cc Lightweight
Locked
User avatar
Ian5913
Posts: 225
Joined: Mon Jan 01, 1990 12:00 am
Location: BERKSHIRE UK

G5 - Monobloc setup

Post by Ian5913 »

Chris you need to get a manual for lightweights from the club it will cover all you need to know on Mono blocs

If not drop me a line and I will write a reply

User avatar
Ian5913
Posts: 225
Joined: Mon Jan 01, 1990 12:00 am
Location: BERKSHIRE UK

G5 - Monobloc setup

Post by Ian5913 »

If you're having carb problems, look at it on a bench and check for wear, sloppy parts, poor jets. Double check with an air line if available (Wearing suitable safety glasses etc) that all holes and jet ways are clear. Check the two manifold nuts haven't been over tightened as this can warp the carb body causing air leaks & so poor running
The standard set up was a 389/42 with an 1" 1/8th
bore size..
Main Jet is a 220, The slide was booked as a 3
The pilot jet was a 25
The needle jet was a .106
The needle was in the central position

To check correct idle mixture, run the engine until warm (Not Hot) With the throttle nearly closed and the air slide fullly open it should run evenly & slowly

(Check plug & Points for clean & Gap)
Should you want to adjust to get a good tickover

Adjust the air screw which is not that sensitive until a clean tick over is obtained, once done set throttle stop screw to get desired tick over speed


Locked