04-25-2010, 05:35 AM #1
mikuni 38mm carb. pop off pressure
Specs. say 10-18 p.s.i. pop off, I have 2 carbs that pop @ 12# & one that pops @ 14 p.s.i. Will that be o.k. or do they all need to be same pop off psi? I was changing springs to acheive desired pop off 2 carbs easy peasy japanesey, 1 carb I couldnt get to pop at any pressure. after goung through needle and seat 3-4 times, I finally found that the spring must have the dimple lined up w/spring. After that I was able to get it to pop @ 14, as shaky as I am tiny springs,& small parts make it challenging, enjoyable yes difficult at times.
04-25-2010, 08:19 AM #2
- Join Date
- Oct 2006
- Cleveland OH
That'll be fine. 12 across the board would be better, but it will work.
You can also try to compress the 14 spring a bit to see if that will lower the #. OR you can also cut a tiny bit of the spring off to lower the tension. (I would only try this option if you have a spare spring)
04-25-2010, 10:23 AM #3
04-25-2010, 10:41 AM #4
You say you were a bit nervous and shaky.... is it possible you may have tweaked the arm that holds the spring? That would change the popoff as well.
04-25-2010, 10:55 AM #5
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