Tach lead/ pilot adjustment


Technical information and Q&A applicable to all years and models of Goldwings
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cobraguy
Posts: 10
Joined: Mon Nov 23, 2009 12:26 pm
Location: El Cajon Ca
Motorcycle: 81 GL1100 Interstate
85 VT500 Shadow
07 250 Rebel

Tach lead/ pilot adjustment

Postby cobraguy » Mon Dec 28, 2009 7:48 pm



I've rebuilt my carbs on my 81 interstate and need to adjust the pilots. I have an automotive tach that reads up to 2000 rpm in 25 rpm incriments I normally hook it up to the coil neg on a car with a distributor. Can I hook it up to one of the coil primary wires, if so which one, (color please)and have it work. I do realize I will probably have to multiply my reading by 2 or 4. Also should I adjust pilots then sync or sync then adjust pilots.



cobraguy
Posts: 10
Joined: Mon Nov 23, 2009 12:26 pm
Location: El Cajon Ca
Motorcycle: 81 GL1100 Interstate
85 VT500 Shadow
07 250 Rebel

Re: Tach lead/ pilot adjustment

Postby cobraguy » Wed Dec 30, 2009 11:58 am

OK so I got it done. I ended up getting an inductive pickup type tach at harbor freight $36.99. Not quite perfect for the job but it worked. At 1000rpm on the bike tach it was raeding 500 no biggie. For anyone out there doing the same, I found you must sync the carbs first. What a difference it makes. On the initial assembly I adjusted all the butterflies to close at the same time and amount visually. Needless to say it ran like cr@p but it ran. I used a carb tune and sync kit from sabrecycle on ebay came with kits, cutoff valves, accelerator pump, intake O rings, and a mercury monometer (carb sticks). $144 buy it now, quite the deal. Setting the pilot jets is a serious PITA because they're hard to get at and the engine has to be hot and running.


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