Mikuni HSR42
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Road Captain
Joined: Jun 2014
Posts: 598
Likes: 376
From: Sweden
Mikuni HSR42
I have a possibility to buy a brand new HSR42 Easy kit at a descent price.
And yes it's a genuine one.
Question for You guys that are experinced in them carbs, is it worth changing the CV for an HSR42?
Bike got Sreami'n Eagle slipons, and airfilter with backplate.
And yes it's a genuine one.
Question for You guys that are experinced in them carbs, is it worth changing the CV for an HSR42?
Bike got Sreami'n Eagle slipons, and airfilter with backplate.
Road Warrior
Joined: Dec 2012
Posts: 1,539
Likes: 692
From: magnolia tx
The HSR42 is more of a performance carb than a CV, HSR42 is a great carb as long as you don't mind a touchy throttle "cable connects directly to the slide" unlike a CV, depends on how your ride, if your a cruiser stick with the CV, if you like to ride hard the HSR42
Road Captain
Joined: Jul 2020
Posts: 592
Likes: 481
From: SE PA
I went from a CV to an HSR42 several years back. I've got nothing against a properly setup CV carb but I recommend the Mikuni primarily for the noticeably better throttle response. I have ridden two completely identical bikes with the same modifications back to back with the only difference being one had a CV, the other an HSR42. That sold me on the HSR, I just like the feel of it more.
The Mikuni Tuning manual available online is an excellent resource if you end up grabbing the carb. One thing to note is that the idle mixture screw direction works the opposite of the CV. With the Mikuni you screw it in (clockwise) to richen the mixture, screw it out (counter-clockwise) to lean it out where with the CV you screw it out to richen the mixture, screw it in to lean it out.
The Mikuni Tuning manual available online is an excellent resource if you end up grabbing the carb. One thing to note is that the idle mixture screw direction works the opposite of the CV. With the Mikuni you screw it in (clockwise) to richen the mixture, screw it out (counter-clockwise) to lean it out where with the CV you screw it out to richen the mixture, screw it in to lean it out.
Last edited by MattLS6; Feb 11, 2021 at 03:03 PM.
Seasoned HDF Member
Joined: Jan 2009
Posts: 5,144
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From: WACO
Just my 2 cents which means nothing here. Have not had the pleasure of running a CV carb. Have run Linkerts, Bendex's , Keihins, SU's, S&S B, S&S E. The best hand's down, for me, was the Mikuni HSR42 flat side carb. A tuner's dream come true. I recommend to buy it. But. As I have not had experience with a CV carb. That is just my opinion. Which doesn't mean much here.
Last edited by OLD 96; Feb 11, 2021 at 08:58 PM. Reason: spelling
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,681
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From: OH
[QUOTE=OLD 96;19731054]Just my 2 cents which means nothing here. Have not had the pleasure of running a CV carb. Have run SU's,
Had SU s on Brit cars
there was no pleasure
Top off the dashpots Nigel
Had SU s on Brit cars
there was no pleasure
Top off the dashpots Nigel
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Road Warrior
Joined: Dec 2012
Posts: 1,539
Likes: 692
From: magnolia tx
[QUOTE=eighteight;19731457]I've been there to with the SU"s, finicky buggers!