best cam for 2015 103 twin cooled
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6th Gear
Joined: Apr 2023
Posts: 10
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From: Island
best cam for 2015 103 twin cooled
Planing upgrade with thundermax, fullsac, and Stage 1 air. EPA cams suck. I did the conversion on my 05 with andrews tw26 cams and wow what a difference. I want to install the Fullsac pipe with my current Khrome Werks slip-ons and would like to upgrade the cams. What you say community?
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,113
Likes: 11,159
From: San Diego, CA
My advice......
Decide what you want in terms of performance, (low end torque, high rpm power, etc, etc,) then contact one of the forum vendors, like FuelMoto.
Let them advise you what cam would get you to your goal, and work well with your other components....
Good luck with your decision and your mods....
Decide what you want in terms of performance, (low end torque, high rpm power, etc, etc,) then contact one of the forum vendors, like FuelMoto.
Let them advise you what cam would get you to your goal, and work well with your other components....
Good luck with your decision and your mods....
Road Master
Joined: Mar 2012
Posts: 1,013
Likes: 976
From: Ohio
If you are after stump pulling and mid range power I'd stick a set of Andrews 48s in there. For a broader power range and better top end Andrews 57's would be my choice. The timing of the 57's are very similar to the Andrews 37 cams used by many in TC 88" and 95" applications.
Road Master
Joined: Jul 2019
Posts: 768
Likes: 430
From: CLT NC
Have a look here: https://university.fuelmotousa.com/a...shaft-shootout
And here: https://www.hdforums.com/forum/touri...l#post18794590
Please keep in mind the 2014-2016 103 HO engines already come with 255-ish cams from the factory. These cams make very good TQ in the low-mid area due to increased cylinder pressure. The cam profile in the older non-HO 103s was very short/small and I think the same as that used in the old 88/96 engines. My 2014 Stage I 103 HO makes quite a bit more power than my wife's 2013 Stage I 103 due to the new cam profile.
For touring bikes I want big TQ in the low/mid area. I would be wary of cam profiles with a lot of lift along with stock heads and springs but that is just my opinion...
And here: https://www.hdforums.com/forum/touri...l#post18794590
Please keep in mind the 2014-2016 103 HO engines already come with 255-ish cams from the factory. These cams make very good TQ in the low-mid area due to increased cylinder pressure. The cam profile in the older non-HO 103s was very short/small and I think the same as that used in the old 88/96 engines. My 2014 Stage I 103 HO makes quite a bit more power than my wife's 2013 Stage I 103 due to the new cam profile.
For touring bikes I want big TQ in the low/mid area. I would be wary of cam profiles with a lot of lift along with stock heads and springs but that is just my opinion...
Last edited by VortecCPI; Apr 9, 2024 at 06:39 PM.
HD EFI Guru
Joined: Jan 2008
Posts: 4,462
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Planing upgrade with thundermax, fullsac, and Stage 1 air. EPA cams suck. I did the conversion on my 05 with andrews tw26 cams and wow what a difference. I want to install the Fullsac pipe with my current Khrome Werks slip-ons and would like to upgrade the cams. What you say community?
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5th Gear
Joined: Apr 2024
Posts: 9
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From: Newport News
Agree with "Define what you want from the bike"
Do you want raw torque off the line, say for drag racing?
Do you want high speed for highway MPH?
For me I want "ride ability" some power to pull on to the highway, a little on the low end for pulling off the line but then ability to pass on the highway. In other words broad curve
I am ending up with:
Big bore 107 (from 103)
Wood Performance TW-777
Jackpot 2/1/2 header pipe
Jackpot Street Outlaw 4" slip-on
AC/DC air cleaner w/ BMF Hi Flow
Thundermax ECU
I have heard of some of the cams being really loud. If you didn't know they were going to be loud it will make you think there was an issue.
Do you want raw torque off the line, say for drag racing?
Do you want high speed for highway MPH?
For me I want "ride ability" some power to pull on to the highway, a little on the low end for pulling off the line but then ability to pass on the highway. In other words broad curve
I am ending up with:
Big bore 107 (from 103)
Wood Performance TW-777
Jackpot 2/1/2 header pipe
Jackpot Street Outlaw 4" slip-on
AC/DC air cleaner w/ BMF Hi Flow
Thundermax ECU
I have heard of some of the cams being really loud. If you didn't know they were going to be loud it will make you think there was an issue.
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