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triple HS6 SU - needles ? 140-160

posted by  vvpete on  Thu Jun 11 12:35 CST 2009
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last visit: Thu Jul 10 14:10 CST 2014
[RELATED]

OK, sorry I mis-understood.
But everything I said still applies. A stock B30 with two SU carbs runs fantastic with RR needles which are about high range rich for a stock B20 (two ranges above the KN), but work very well for a built B20 also. I have done this on a 164 B30 that orig had twin Strombergs.

I still think you'll need either much leaner needles or a much higher flow head and exhaust to make three carbs work well.

Since you've already got it running, do the test as I describe and see how high the pistons lift. If the're only 2/3 of total height on acceleration, lean the needles out.






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