Recommend my upgrade...
Thread Starter
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Intermediate
Joined: Apr 2013
Posts: 34
Likes: 1
From: Manteca, Ca
Recommend my upgrade...
I have a 2003, Road King Classic. I LOVE it! No intension of a replacement. So far, it has a Stage 1 kit, true dual exhaust and 203 cams. But it still has the stock 5-speed tranny and 88 cu in. motor.
I don't need to make it a 110 Screamin' Eagle, but I'm ready for a bit more power. I had the bottom end done about 2 years ago (under warranty, since I bought it used 3 years ago). I was told that I could do the top end next without ant problem, but he never really clarified what my options were.
Can I put a 103 cu in displacement top end on it as a bolt-on? Or will I then also need to add a 6-speed tranny at the same time? From what I can piece together, the final drive ratio of both is still 1:1.
I don't need to make it a 110 Screamin' Eagle, but I'm ready for a bit more power. I had the bottom end done about 2 years ago (under warranty, since I bought it used 3 years ago). I was told that I could do the top end next without ant problem, but he never really clarified what my options were.
Can I put a 103 cu in displacement top end on it as a bolt-on? Or will I then also need to add a 6-speed tranny at the same time? From what I can piece together, the final drive ratio of both is still 1:1.
Tourer
Joined: Nov 2012
Posts: 497
Likes: 0
From: PA
I have a 2003, Road King Classic. I LOVE it! No intension of a replacement. So far, it has a Stage 1 kit, true dual exhaust and 203 cams. But it still has the stock 5-speed tranny and 88 cu in. motor.
I don't need to make it a 110 Screamin' Eagle, but I'm ready for a bit more power. I had the bottom end done about 2 years ago (under warranty, since I bought it used 3 years ago). I was told that I could do the top end next without ant problem, but he never really clarified what my options were.
Can I put a 103 cu in displacement top end on it as a bolt-on? Or will I then also need to add a 6-speed tranny at the same time? From what I can piece together, the final drive ratio of both is still 1:1.
I don't need to make it a 110 Screamin' Eagle, but I'm ready for a bit more power. I had the bottom end done about 2 years ago (under warranty, since I bought it used 3 years ago). I was told that I could do the top end next without ant problem, but he never really clarified what my options were.
Can I put a 103 cu in displacement top end on it as a bolt-on? Or will I then also need to add a 6-speed tranny at the same time? From what I can piece together, the final drive ratio of both is still 1:1.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
I agree with all the above, although Scott will probably recommend a 98" big bore. He can also port your heads and recommend and supply a set of cams, so everything works just so. Upgraded suspension will also make your bike quicker! Honest.
Ultimate HDF Member
Joined: Jun 2007
Posts: 9,193
Likes: 494
From: Richmond, VA
You can do a cylinder "bolt on" kit that will get you between 95-98 inches. Any more and you have to do machine work. Raise compression when you go big-bore, and add new cams and you will see a big improvement in power. Add head work and you will be wiping the road with 99% of the bikes you come across. As far as the 6-Speed upgrade??? That's your call. For $150 you can add a transmission pulley and get whatever final drive you want. I don't care if I have 5 or six gears, I prefer to spend money elsewhere.
Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
Likes: 143
From: Santa Cruz
You can do a cylinder "bolt on" kit that will get you between 95-98 inches. Any more and you have to do machine work. Raise compression when you go big-bore, and add new cams and you will see a big improvement in power. Add head work and you will be wiping the road with 99% of the bikes you come across. As far as the 6-Speed upgrade??? That's your call. For $150 you can add a transmission pulley and get whatever final drive you want. I don't care if I have 5 or six gears, I prefer to spend money elsewhere.
Bore your cylinders for 95/98" 10.5 pistons. Get matching cams, headwork and tune. Don't worry about only 5 gears.
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Tourer
Joined: Jan 2010
Posts: 296
Likes: 4
road king 2000 carb
bore my cylinder to 98 ci head work from wfo larry stage 1 + bigger intake valve andrews 57 cam sm adj push rod
107 tq 98 hp show my tail lite to my friend 110
bore my cylinder to 98 ci head work from wfo larry stage 1 + bigger intake valve andrews 57 cam sm adj push rod
107 tq 98 hp show my tail lite to my friend 110
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Elite HDF Member
Joined: Jul 2007
Posts: 4,749
Likes: 16
From: sand mountain Alabama
I would do a 95-98" inch. Don't get crazy trying to get all you can that would be costly.
Stage 3 or 4 heads with a 95/98 inch cams that you like. Do what is needed for a good reliable engine from there.
Stage 3 or 4 heads with a 95/98 inch cams that you like. Do what is needed for a good reliable engine from there.
Thread Starter
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Intermediate
Joined: Apr 2013
Posts: 34
Likes: 1
From: Manteca, Ca
Any clue what the guy was thinking by putting in the 203 cams? I do like the idea of suspension upgrades as well.
Here she is without the Tourpak. Lots of ***** G trim and just put on some nice, black 2-piece rotors that aren't in this photo.
Here she is without the Tourpak. Lots of ***** G trim and just put on some nice, black 2-piece rotors that aren't in this photo.