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Carburetors and Carb Tuning.. All info about old school carb set ups.. |
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#9 |
Waffles - hmmm good
Join Date: Aug 2008
Location: Huntersville, NC
Posts: 757
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I put the nikki on tonight. It runs but has a high idle 1500 or so. Other than
that it seems to work pretty well. I will have to test drive it tomorrow. The high idle may be due to the primary fuel jets being drilled out but I didn't touch the primary air jets on top. That may make it overly rich at idle. The idle fuel adjust seemed to have very little affect. When I looked down the primaries during idle I can see fuel dripping fairly constantly in both barrels but it doesn't look very well atomized. Could be just the low air flow or is it a symptom of not drilling those primary air jets to match. I also need to hook up the FBVS as that may be causing me some headaches as well. I don't think I have any vacuum leaks. I put a vacuum guage on the second nipple from the front of the carb base gasket and it read a steady 10 and when I blipped the throttle shot up to 15 or 20 and steadily returned to 10 as it settled back to idling (at 1500 rpm). I expect if I could get it to idle at 750 rpm that initial vacuum signal would be zero since thats the one for the advance on the dizzy ( to my understanding anyway). Of course I want to take this down to the Mitty this weekend and my wife thinks I'm crazy. Maybe I am but its fun ![]()
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1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs Project Fat Nikki Budget 12A rebuild Video setup < $30.00 |
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12a, carb, nikki |
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