110" CVO vs. 103" build ?
110" CVO vs. 103" build ?
As it gets closer to my build time in a few weeks, I'm getting kind of anxious to see how it will run come spring here in WI. I've ridden a few stock 110" CVO's on decent demos and know how they run. I know they have 255's in them but don't they also have large chambered heads to keep the compression down? Just wondering how my planned build would compare? It's going to be a 103" flat top/54H cam/.030 top end, some head work done, primarily concentrating on valve work (1.9 and 1.6), intake bowl clean up, CC equalization, squish grooves and a custom tune when broken in. Thanks for input for those in the know..
Last edited by troop; Dec 25, 2010 at 03:34 PM.
Road Master
Joined: Jun 2008
Posts: 868
Likes: 1
From: Trenton,N.J.
As it gets closer to my build time in a few weeks, I'm getting kind of anxious to see how it will run come spring here in WI. I've ridden a few stock 110" CVO's on decent demos and know how they run. I know they have 255's in them but don't they also have large chambered heads to keep the compression down? Just wondering how my planned build would compare? It's going to be a 103" flat top/54H cam/.030 top end, some head work done, primarily concentrating on valve work (1.9 and 1.6), intake bowl clean up, CC equalization, squish grooves and a custom tune when broken in. Thanks for input for those in the know..
10.15:1, Stock head pipes with Jackpot slip-ons, SEPST and local H-D dealership
Road Master
Joined: Jun 2008
Posts: 868
Likes: 1
From: Trenton,N.J.
You might want to consider a better exhaust to help the build.Is the dealership fluent with the SEST??I don't know if i would let them tune it!! I would call Doc at HDMD Tuning Center to see if he has trained anyone in your area on the SEST.He might tell you to go with TTS Mastertuner!!! Before you get bike tuned call him!!! You have nothing to loose;His advice might help you get a more competent tuner!!! Ask me how i know???
You might want to consider a better exhaust to help the build.Is the dealership fluent with the SEST??I don't know if i would let them tune it!! I would call Doc at HDMD Tuning Center to see if he has trained anyone in your area on the SEST.He might tell you to go with TTS Mastertuner!!! Before you get bike tuned call him!!! You have nothing to loose;His advice might help you get a more competent tuner!!! Ask me how i know???
Can anyone guide me to a 110" CVO dyno chart?
Last edited by troop; Dec 25, 2010 at 09:15 PM.
Trending Topics
Ultimate HDF Member
Joined: Aug 2008
Posts: 5,413
Likes: 17
From: eastern oklahoma
hey troop, the difference between the 103 and 110 which was important to me was that the cases have to be bored in order to accept the 110 cylinders. there's quite a bit of material removed during the boring process, leaving the cases a bit thin in the cylinder base area. there are a lot of 110's running around, but the added cost of splitting the cases to accomplish the 110 caused me to go with the 103 instead. there are a lot of 106's and 107's also, they've become quite popular lately and they don't require the machining or opening up the bottom end of the motor cases either. consider the 106 or 107 if you feel the 103 wouldn't be enough. we're splitting hairs here though, as a few cubic inches, 103 vs 106/107, not a big deal. i know i'm very happy with my 103.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
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
I am very happy to be able to go to my 103" project. In some bodies opinion, theirs always a weak link in any bodies project whether it be CID,cams, exhaust, head work, etc. My question was really simply meant to ask how does a 103" build (with cams/compression/etc) compare to a stock 110" CVO, key word being stock? My H-D riding experience has been stock 96", 103", 110" CVO and my buddy's wild 133". I have never ridden a built 103/106/107 build to compare or feel the difference. I'm thinking I need 103" build owners who've ridden a stock 110" CVO to chime in...
Last edited by troop; Dec 26, 2010 at 09:56 AM.
Road Captain
Joined: Jan 2006
Posts: 508
Likes: 14
From: Tallahassee
I did a 103 build on my 08 Road Glide last winter. I have just over 6000 miles on the 103 now.
I went with SE forged flat top pistons, Wood TW6-6 cams, Head work and cylinders bored by Big Boyz Head Porting, cc'd the heads and have a 10.2-1 compression ratio with manual compression releases. Running Bassani RoadRage 2 into 1, and SE heavy breather. Had it tuned at my local dealer with a SERT. I put it together myself.
It makes 102 hp, and 110 torque. It runs great, gets better milage then it did as a 96 (if riding easy) and halls butt pretty good.
A riding buddy has a 2010 "convertable" softale 110 CVO bike. He has a V&H 2 into 2 exhaust, V&H fuel management, but not dyno tuned.
I can walk him pretty easy (I still have stock 08 gearing) from a deadstop, a roll on, or top end.
I am sure that with a SERT, and proper tune he would run better, but I think he still wont keep up.
I think those stock 110s need more compression and different cams.
Although I love CVO bikes, I certanly do not fear them.
Hope that helps,
Doug
I went with SE forged flat top pistons, Wood TW6-6 cams, Head work and cylinders bored by Big Boyz Head Porting, cc'd the heads and have a 10.2-1 compression ratio with manual compression releases. Running Bassani RoadRage 2 into 1, and SE heavy breather. Had it tuned at my local dealer with a SERT. I put it together myself.
It makes 102 hp, and 110 torque. It runs great, gets better milage then it did as a 96 (if riding easy) and halls butt pretty good.
A riding buddy has a 2010 "convertable" softale 110 CVO bike. He has a V&H 2 into 2 exhaust, V&H fuel management, but not dyno tuned.
I can walk him pretty easy (I still have stock 08 gearing) from a deadstop, a roll on, or top end.
I am sure that with a SERT, and proper tune he would run better, but I think he still wont keep up.
I think those stock 110s need more compression and different cams.
Although I love CVO bikes, I certanly do not fear them.
Hope that helps,
Doug