Super E verses stock Mikuni carb

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#11

09-07-2014, 05:03 PM

Max Headflow

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Quote:

Originally Posted by mkguitar

The improvement depends 100% on the skill and knowledge of the tuner- to tune the carb to the potential of the motor.

BOTH the Mikuni and the S&S will need adjustment if you change elevation much.

The stock Keihin CV carb would not, it is self adjusting for air density changes whether altitude or temperature.

Again it depends on the skill of the tuner.
Nightrider.com biketech section has info on modding and tuning the CV carb.

My 80" 1995 FLHTC with CV got 45 MPG at 65 MPH and sailed through emissions.

It also left way behind my Pal's 103/103 twin cam road king with Mikuni once we changed elevation- he was tuned for 1400' Phoenix...much of Northern AZ is 5000' +, Flagstaff is at 7000'

mike

How much is much? I regularly run a G, HSR48 or CV51 from about 1000 feet to over 6500.. None of the hick-up, or studder or do any other mean nasty things... I've run the G and the 51 on a bike (not together ;-) ) with an O2 sniffer on the front pipe and both carbs go rich as the altitude climbs.. Biggest issue with the G is the cross over between the intermediate jet and the main.. It could cause a rich spike that might case a stumble or miss, especially if you had drag pipes.. Since about 2003, the G has had an adjustable air bleed so it's not an issue.. Super Es actually carburate pretty good even without the air bleed.. I've seen 50 mpg out of them, flat ground 70-75 MPH light bike.. I personally like the SnS, CV, and HSR carbs.. Some have interesting tuning issues but none are really bad...

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#12

09-07-2014, 08:09 PM

dochawken

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Quote:

Originally Posted by 0ldhippie

A CV carb is stock. If ya have a Mikuni there is no advantage going to a S&S. Tune it.

Precisely...

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#13

09-07-2014, 09:18 PM

Weavr99FLHT

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Quote:

Originally Posted by mkguitar

BOTH the Mikuni and the S&S will need adjustment if you change elevation much. The stock Keihin CV carb would not, it is self adjusting for air density changes whether altitude or temperature. mike

My stage 2 1999 tc88 w/ 42mm Mikuni went coast to coast twice, totaling 48 states from sea level to 12,000 feet - never hiccuped, stumbled or burped.

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