103 HO or standard 103?
Road Warrior
Joined: Sep 2016
Posts: 1,887
Likes: 1,059
From: SE Washington
With all respect, the HO 103 was no gimick. Had both. The HO 103 had a small bump in compression and cams that were somewhere between a SE 254 and 255. They were both really good engines, but the HO in stage 1 form, with a good aftermarket stage 1 and a proper tune ran comparably well to my 2011 103 after installing a good aftermarket stage 2 with andrews 54h cams and really good tune.
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Joined: Jan 2019
Posts: 57
Likes: 16
From: Missouri
Thank you for the responses. I am thinking of doing a cam swap.
I had heard a bolt in cam with original heads wasn't worth it on the HO but makes a difference on the standard 103.
Any suggestions? My friend has a SE204 in his and really likes it. Not sure about its performance but it sure sounds good.
I had heard a bolt in cam with original heads wasn't worth it on the HO but makes a difference on the standard 103.
Any suggestions? My friend has a SE204 in his and really likes it. Not sure about its performance but it sure sounds good.
Road Warrior
Joined: Sep 2016
Posts: 1,887
Likes: 1,059
From: SE Washington
Interesting how opinions vary. I owned both, put a lot of miles on both in stock form and after some changes. The 2014 / HO was a stronger motor, especially after a simple stage 1 and a proper tune.
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Road Warrior
Joined: Sep 2016
Posts: 1,887
Likes: 1,059
From: SE Washington
Thank you for the responses. I am thinking of doing a cam swap.
I had heard a bolt in cam with original heads wasn't worth it on the HO but makes a difference on the standard 103.
Any suggestions? My friend has a SE204 in his and really likes it. Not sure about its performance but it sure sounds good.
I had heard a bolt in cam with original heads wasn't worth it on the HO but makes a difference on the standard 103.
Any suggestions? My friend has a SE204 in his and really likes it. Not sure about its performance but it sure sounds good.
On my 2011 103 I installed andrews 54h cams along with fullsac xpipe, cometic .030 head gaskets... tuned with tts mastertune. It frkn ran great and with the mild ramp rates on the cam lobes, valve train noise was no different than stock. Dyno was just shy of 99hp with 106tq.
There are a lot of good offerings for cams for the 103 such as tts, woods, s&s, and andrews. I'd research all, consider your riding style and whether you prefer low rpm grunt or running up the rpm's a bit, and maybe call a few of our sponsors. If it were me, with your bike, I would opt for the andrews 57h.
Last edited by MTBIG G; Feb 6, 2019 at 01:58 AM.
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Road Warrior
Joined: Sep 2008
Posts: 1,873
Likes: 99
From: G-burg, Penna
Like MTB said, great choices in cams and options, just do your research and plan of attack!!!Pay once, cry once...Big fan of Andrews, proven and true....a TW37or 54, with mild head work, polish valves out to 80-82cc, will make that cams combo shine, plus you need a good dynoed....Good luck and have fun on your build.
