Thread: HIF6 vs HS6
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Old 11-22-2020, 10:00 PM   #12
spock345
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Join Date: Nov 2016
Location: Santa Cruz, CA
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Well I have been looking at the specs. A 100HP B18D, which is what I've got should have either SM or KG needles.

I found a site that rather nicely plots the taper of each needle. https://classicminidiy.com/technical/needles

Comparing the BBB, KG, and SM needles shows the SM and BBB to be pretty close with the BBB slightly richer. The KG is quite a bit leaner than either the BBB or SM. I bet I could get away with it given I am running a better exhaust. Maybe.

At this point I would like to run the HS6 carbs but I am trying to figure out if it is feasible to run the HIF6s until I can sort out the throttle shafts.
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