Mikuni jetting for V-111?
Thread Starter
|
Stage II
Joined: Feb 2020
Posts: 2
Likes: 0
From: Philadelphia
Mikuni jetting for V-111?
Hello all! New to the forum so I'll start with an intro, my name is Scott and I'm a mechanic in Philadelphia. I work at a motorcycle shop and with some trading came into a S&S V111 with a HSR42. Now I'm in the process of tuning and I'm a bit leaner than I would like to be, especially with a high performance motor. I was curious if anyone here has already tuned a set up close to this? It would save me some time, money, and aggravation. Any info is greatly appreciated. Thanks!
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
Hello all! New to the forum so I'll start with an intro, my name is Scott and I'm a mechanic in Philadelphia. I work at a motorcycle shop and with some trading came into a S&S V111 with a HSR42. Now I'm in the process of tuning and I'm a bit leaner than I would like to be, especially with a high performance motor. I was curious if anyone here has already tuned a set up close to this? It would save me some time, money, and aggravation. Any info is greatly appreciated. Thanks!
it doesnt take much time and money to follow the mikuni hsr tuning manual and dial in the crab. Id guess 180 main and go from there. The manual literally walks you step by step for each circuit to tune.
Thread Starter
|
Stage II
Joined: Feb 2020
Posts: 2
Likes: 0
From: Philadelphia
Thanks guys. I understand I should just go and tune it by the tuning manual, I was just trying to get a baseline. Brand spanking new motor, didn't want to get anything too hotby running too lean or anything. I'm at a 25 slow jet, 160 main, needle is on the second notch from the bottom, accelerator pump nozzle is a 70. I'm a hair rich, which I don't mind, just having a hiccup on start up now. Doesn't want to fire without some throttle. I'll figure it out though. Thanks again for your input guys!
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
I figured that many cubes would take more. Guess not, my 48 hsr runs 195-215 depending on DA haha
guess Im used to that and over guess main jetting on bigger cubes
Grand HDF Member
Joined: May 2014
Posts: 3,822
Likes: 1,170
From: florida
how many more cubes??? it would have to be a monster engine and or a very poor exhaust system on that set up. i'vve tuned lots of 100hp plus and 100 inch plus engines on my dyno and RARELY had to go larger than 177 main jet.
what do you have?
m
what do you have?
m
Sponsor
Joined: Dec 2007
Posts: 12,084
Likes: 829
Bump the pilot to a 27.5 and the main to a 165....see how it reacts.
Shy of a dyno tune, trial and error until you find a combo that you want/like.
Scott
Shy of a dyno tune, trial and error until you find a combo that you want/like.
Scott
Trending Topics
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
I was ball parking the 111ci and was way off according to you and hillside. Im used to My 76-77 CI Xls. Both 48 miks 185-195 on the street one and up to 215 on race one. U4.4 fuel in the race on.
77 CI, when I ran a Kevin benson racing super D main was 92-96. Also ran a SA RACING super D with custom jets from Steve. Yuuge jets running c45
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,062
Likes: 7,591
From: Poolville
There used to be a time where nobody in their right mind would put an S&S E carburetor on anything smaller than 100". But truth be to the fact that it's not about cubic inches it's about air flow and what your heads can do and how much your pump can displace. Now on these v111s that S&S is putting out they're sending them out with E-Series carbs, yes.. BUT...
Don't you think they're doing that just to meet EPA standards? I mean let's be realistic here, unless the heads on those motors suck and they're not moving enough CFM then yeah an E-Series carb will suffice.. I don't deal much with mikuni's or CV carbs and I know a lot of people swear by them, yes they're not bad but a HSR 42 on 111 cubic inch motor? Not sure it's going to be a good match.. I could be wrong but that's just my opinion..
Don't you think they're doing that just to meet EPA standards? I mean let's be realistic here, unless the heads on those motors suck and they're not moving enough CFM then yeah an E-Series carb will suffice.. I don't deal much with mikuni's or CV carbs and I know a lot of people swear by them, yes they're not bad but a HSR 42 on 111 cubic inch motor? Not sure it's going to be a good match.. I could be wrong but that's just my opinion..
