Rick Fraser Posted October 3, 2017 Author Share Posted October 3, 2017 Thanks Frank, I got the Champion X plugs and put them in. The plugs come at .025" and my manual says 1/32 to 1/16. What gap do you run? I'm running the .025" now. On another topic, Iv'e had the carb apart because the car doesn't run well under load. It's fine for starting and idling and restarts fine when hot and even revs up well, but driving is a different story. As far as I can tell there is only a mixture screw adjustment and I've fiddled with that quite alot.It seems to run best at a little over 1/4 turn from close. Do you have any suggestions? The carb is clean and I can't detect any unusual wear. Thanks, Rick. Link to comment Share on other sites More sharing options...
Frank Cerutti Posted October 4, 2017 Share Posted October 4, 2017 Hello, Rick We are on some Veteran tours at present, and I am away from my photo file. However your photos show that the air inlet valve (the lower cylinder) looks right, but the mixture delivery cylinder (the upper) cylinder is not in the right position for running. The upper cylinder has a square boss which engages with the square hole in the throttle control lever. There are 4 possible positions for engagement, and only 1 is right. So in words: engage the upper cylinder with the throttle arm fully forward against the stop. From the driving position, the forward direction is at 12o'clock, the arm is at about 2:00o'clock. In this position, the mixture delivery cylinder should be just open, and so when the gas pedal is pushed down, the cylinder is pulled open clockwise. The air inlet valve should be more open than the mixture valve and is set by the quadrant and screw on top of the carburettor. There is an excellent technical explanation by Tim Simonsma in the Maxwell-Briscoe Yahoo forum, but this relies on the valves being correctly orientated. good luck Frank Cerutti 1909 LD9024 Townsville, Australia Link to comment Share on other sites More sharing options...
Frank Cerutti Posted October 4, 2017 Share Posted October 4, 2017 Rick I set the Maxwell plug gap to 0.025inch. Regarding the carby setting procedure, look in the Yahoo Maxwell-Briscoe forum for "Files" and then "carburettor adjustment". Frank Cerutti 1900 LD9024 Townsville, Australia Link to comment Share on other sites More sharing options...
Rick Fraser Posted October 4, 2017 Author Share Posted October 4, 2017 Frank thanks for this information. I understand your description of the set up for the mixture delivery cylinder but you lost me at the air inlet valve. How much further should the air inlet be open over the mixture delivery cylinder? Rick. Link to comment Share on other sites More sharing options...
Rick Fraser Posted October 4, 2017 Author Share Posted October 4, 2017 Hi guys. I've been tinkering with the carb and have it running pretty good. Today I checked the plugs and found one was a bit weak. Switched their positions and same. Looking for new ones now. Mine are AC FF. DO you know where to get replacements? Link to comment Share on other sites More sharing options...
Frank Cerutti Posted October 5, 2017 Share Posted October 5, 2017 Rick The latest photo of the carburettor looks better. Regarding spark plugs, we have had the conversation about Champion X. Frank Cerutti 1909 LD9024 Townsville, Australia Link to comment Share on other sites More sharing options...
Mark1912 Posted February 2, 2020 Share Posted February 2, 2020 Is someone still making the New Splitdorf coil box? Like the one posted above. And if so, who? Mark Link to comment Share on other sites More sharing options...
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