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SU jetting and tuning 140-160

uid 779's pic
posted by  matt b on  Mon Jan 6 11:13 CST 2003
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last visit: Tue Oct 14 16:33 CST 2014
[RELATED]

Yea, that sounds about just like what mine is doing... I too am currently running HS6 carbs off a '65 B18. I'll look into some...thinner, more tapered?.. needles. That would keep it proper at idle I suppose, and only offer up more fuel when it is needed.

My big thing was that it really does run well at 7000+ or so altitude now, but feels...like you said....strangled here in town at about 4500 feet. It used to run strong all the time with that one oversized jet, but it never idled right. Now it idles about as good as I can expect the the R-sport spec cam....

I really do want to stick with the SUs...because I like 'em. And they are fairly easy to work on...

I'll look into needles first.

Thanks,
Matt






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