KingGroover Posted March 7, 2004 Share Posted March 7, 2004 Does anybody remember what carburetors are? :roll: I installed new spark plugs last week, then synched the carburetors. I did the carb sync with the airbox installed. While doing so, the only sync screw that I seemed to have access to was the one between carbs 2 and 3. Luckily, that was the only one that needed adjusting as the 1-2 and 3-4 sets were synched well to each other. Lucky me :cool: Anyway, is it possible (or recommended) to sync the carbs with the air box removed? Doing so would give me access to the other screws, I think. In the Haynes manual under carb synchronization they photograph the carbs w/o the air box, yet the text doesn't instruct to remove the air box... Any advice? Thanks Rob ------- '97XX Quote Link to comment Share on other sites More sharing options...
Northman Posted March 7, 2004 Share Posted March 7, 2004 Does anybody remember what carburetors are? :roll: My lawn mower has a carburetor. :poke: Seriously, whatever is easier. Removing the airbox should affect all the carbs equally, so synchronization shouldn't change with it on or off. Just be sure that all vacuum lines are looked after if the box is removed. Quote Link to comment Share on other sites More sharing options...
KingGroover Posted March 7, 2004 Author Share Posted March 7, 2004 hehe, thanks North. :razz: What are the best carb synchronizers, anyway? I used an old JC Whitney w/the dial/spring gages...are the Mercury columns considered more precise? Quote Link to comment Share on other sites More sharing options...
Guest Posted March 7, 2004 Share Posted March 7, 2004 I used a mercury one on my 97 last season. Worked great. I took the air box off, took a few minutes and was definately worth it. Mine were all fubared. Much better now. Quote Link to comment Share on other sites More sharing options...
Pete in PA Posted March 7, 2004 Share Posted March 7, 2004 I've got the cheap $35 mercury one. Works great, always calibrated. Take the airbox off to do it. Won't hurt the process. Even with it off, one of the screws isn't accessible because of one of the air cut-off valves. The only way to get to this screw is to shut off the engine, rotate the throttle, then adjust the screw. I use a foot long phillips screwdriver. In my manual these air cut-off valves are listed as on CA bikes only which mine isn't but they're still there. Has anyone removed them? I've removed all the rest of the "polution devices". Quote Link to comment Share on other sites More sharing options...
blackhawkxx Posted March 7, 2004 Share Posted March 7, 2004 I've removed all the rest of the "polution devices Ahhh-Your going to jail. :grin: Quote Link to comment Share on other sites More sharing options...
2equis Posted March 8, 2004 Share Posted March 8, 2004 I just finished Installing my Akropovic system and replaced the plugs, air filter and re-jetted (I know....jetting? whats that? ) w/ 148's(may be a littie rich but I'd rather keep it a little rich 'til I hit the eddy dyno next month). What RPM are you syncing your carbs at :?: Quote Link to comment Share on other sites More sharing options...
bajjer9 Posted March 8, 2004 Share Posted March 8, 2004 I just had mine done this past weekend. My bud thats a cycle mechanic showed me how and if i remember correctly you adjust it at 2k rpm? is that right? Quote Link to comment Share on other sites More sharing options...
Pete in PA Posted March 8, 2004 Share Posted March 8, 2004 They are synced at idle. 1K rpm. Thouroghly warm engine. You can observe the readings at other rpms just for fun. Quote Link to comment Share on other sites More sharing options...
bajjer9 Posted March 8, 2004 Share Posted March 8, 2004 ahh yes now i remember, thanks pete! Quote Link to comment Share on other sites More sharing options...
2equis Posted March 9, 2004 Share Posted March 9, 2004 Thanks Pete! Quote Link to comment Share on other sites More sharing options...
KingGroover Posted March 9, 2004 Author Share Posted March 9, 2004 I synched at around 3000, hope I didn't screw anything up :???: the middle screw was loose by just under 1/4 turn. Couldn't detect much of a vacuum difference carb to carb at idle. It gave me a smooth idle though and I got about 40mpg this past weekend ...granted I was driving like Grandma :oops: Quote Link to comment Share on other sites More sharing options...
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