103 Engine Mods - How Crazy Can You Get While Using 91 Octane
Road Master
Joined: Apr 2009
Posts: 1,205
Likes: 3
From: Mebane, NC
Like the subject line says, what can I do to the 103 while still using 91 Octane?
Pretty annoyed with the power in 6th gear and want to wake the engine up. Right now everything is stock and I'm likely gonna pick up some Rush slip-ons from a guy selling them on Craigslist to hold me over until I determine what's the best thing to do. My budget is fairly large, but I'm not looking to race this thing or anything. So with that, besides an AC/Exhaust and Tune what recommendations can you good folks make.
Thanks for any help!
Pretty annoyed with the power in 6th gear and want to wake the engine up. Right now everything is stock and I'm likely gonna pick up some Rush slip-ons from a guy selling them on Craigslist to hold me over until I determine what's the best thing to do. My budget is fairly large, but I'm not looking to race this thing or anything. So with that, besides an AC/Exhaust and Tune what recommendations can you good folks make.
Thanks for any help!
Road Master
Joined: Dec 2010
Posts: 1,035
Likes: 14
From: Canadian in Germany
YA didnt catch that....thanks....corrected now.....
Stellar HDF Member
Joined: Feb 2010
Posts: 3,386
Likes: 255
From: Southern California
I really like the build in my signature for my 2010 Heritage. I don't need compression releases and 91 octane is fine. I have more than enough power for the street and am very pleased. Been this way for 20K! Did the work in my garage.
Grand HDF Member
Joined: Mar 2013
Posts: 4,922
Likes: 589
From: Running with the gators
Like the subject line says, what can I do to the 103 while still using 91 Octane?
Pretty annoyed with the power in 6th gear and want to wake the engine up. Right now everything is stock and I'm likely gonna pick up some Rush slip-ons from a guy selling them on Craigslist to hold me over until I determine what's the best thing to do. My budget is fairly large, but I'm not looking to race this thing or anything. So with that, besides an AC/Exhaust and Tune what recommendations can you good folks make.
Thanks for any help!
Pretty annoyed with the power in 6th gear and want to wake the engine up. Right now everything is stock and I'm likely gonna pick up some Rush slip-ons from a guy selling them on Craigslist to hold me over until I determine what's the best thing to do. My budget is fairly large, but I'm not looking to race this thing or anything. So with that, besides an AC/Exhaust and Tune what recommendations can you good folks make.
Thanks for any help!
Advanced
Joined: Jan 2013
Posts: 56
Likes: 0
From: cornwall UK
Interesting thread guys, I have just done stage one and had the first service, its now time to give it the beans. I ride the slim like its a sports bike most of the time and I give the pocket rocket guys a run for their money, its the bloody corners that slow me down but they just join the straight bits up then of I go again.
I may go to cams for the next up in horse power but need advise from you guys first.
A two into one fish tail (old school) would be cool any recommendations ?
I may go to cams for the next up in horse power but need advise from you guys first.
A two into one fish tail (old school) would be cool any recommendations ?
Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
The usual Stg1, A good tuner (I really like SERT I've had for 7ys) and Cams will make U smile while in 6th.
The Stg1 did nothing for 6th but it did run better,, The cams is what will wake her up..
I've used 91 without issues, but we can still get 93 at most stations which I use most of the time. also I don't use Ethanol while we still have a choice
.
The Stg1 did nothing for 6th but it did run better,, The cams is what will wake her up..
I've used 91 without issues, but we can still get 93 at most stations which I use most of the time. also I don't use Ethanol while we still have a choice
.
Last edited by oct1949; Jun 16, 2013 at 04:00 PM. Reason: ADDED more
Cruiser
Joined: May 2013
Posts: 115
Likes: 169
From: San Diego
Interesting thread guys, I have just done stage one and had the first service, its now time to give it the beans. I ride the slim like its a sports bike most of the time and I give the pocket rocket guys a run for their money, its the bloody corners that slow me down but they just join the straight bits up then of I go again.
I may go to cams for the next up in horse power but need advise from you guys first.
A two into one fish tail (old school) would be cool any recommendations ?
I may go to cams for the next up in horse power but need advise from you guys first.
A two into one fish tail (old school) would be cool any recommendations ?
Just a thought.
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
Tourer
Joined: Aug 2012
Posts: 369
Likes: 1
From: New Jersey
I had done stage 1 then put the 255 cams in for stage two. what an improvement. Particularly if you are a guy looking for power through the 4000 rpm range. I do not think this cam was made for high rpm's. I noticed in the chart it's peak performance was around 4000 rpm
Thread
Thread Starter
Forum
Replies
Last Post