FuelMoto 107 longevity for touring?
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Road Captain
Joined: Jan 2006
Posts: 508
Likes: 14
From: Tallahassee
FuelMoto 107 longevity for touring?
I am seriously considering a 107 kit from FuelMoto for my 08 RoadGlide. I am looking for some input from anyone that has a few miles on one of these builds.
They put out impressive numbers but I am concerned about longevity.
The MoCo (people that design, engineer and build this type of motor for over 100 years) seem to think that anything over a 103 (3.875 bore) must have thicker cylinders with larger spigots that require case boring.
Although I want a "fast" bagger, this is still a touring bike. I like to ride from Florida to Wisconsin each summer to visit my parents (and Harley Davidson, the Packers, and Miller brewery). I also like to ride to Sturgis every other year.
So I am looking for input from anyone that has but some miles on a 107. 5, 10 or even 15 thousand miles, how are things still working? I am concerned about heat (presently have a 103 build) and too thin cylinder walls.
Thanks for your time,
Doug
They put out impressive numbers but I am concerned about longevity.
The MoCo (people that design, engineer and build this type of motor for over 100 years) seem to think that anything over a 103 (3.875 bore) must have thicker cylinders with larger spigots that require case boring.
Although I want a "fast" bagger, this is still a touring bike. I like to ride from Florida to Wisconsin each summer to visit my parents (and Harley Davidson, the Packers, and Miller brewery). I also like to ride to Sturgis every other year.
So I am looking for input from anyone that has but some miles on a 107. 5, 10 or even 15 thousand miles, how are things still working? I am concerned about heat (presently have a 103 build) and too thin cylinder walls.
Thanks for your time,
Doug
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
4 cubic inches will net you 4 hp/tq max, you already have a 103", it's not worth the cost or the uncertainty of reliability that is on your mind already. It's not a magic kit, you can utilize all the other parts on your 103".
Road Master
Joined: Sep 2006
Posts: 1,062
Likes: 4
From: Arizona
I have close to 10K on mine right now. I have had no issues with it at all. I ride a lot of 2up loaded with a heavy T-bag. Travel all over AZ and NM. Mine was built by Steve over at GMR. Totally reliable.
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Road Captain
Joined: Jan 2006
Posts: 508
Likes: 14
From: Tallahassee
Thanks for the responses guys.
I built my 103 about 2 years (and 13000 miles) ago. As an avid gearhead I am going to take it apart this winter to see how things look inside (no problems, just currious). I thought "for a few hundread bucks why not bump up to a 107"? You might think I am wierd, but I enjoy it, and I am a little wierd.
Also when I did the build the Wood 555s were not available yet, I used the 6-6s. Heads hve been done by Big Boyz Head service.
I am getting right at 99hp and 109 tq and the bike runs great. I just like to tinker.
I figure the 107 with 555 cams would put me over the majic 100/110 mark easily, I would get to do another build and to me, thats ALMOST as fun as riding.
I am just a little concerned about thin cylinder walls.
I could just put in some 555s and retune, but whats the fun in that?
Thanks again,
Doug
I built my 103 about 2 years (and 13000 miles) ago. As an avid gearhead I am going to take it apart this winter to see how things look inside (no problems, just currious). I thought "for a few hundread bucks why not bump up to a 107"? You might think I am wierd, but I enjoy it, and I am a little wierd.
Also when I did the build the Wood 555s were not available yet, I used the 6-6s. Heads hve been done by Big Boyz Head service.
I am getting right at 99hp and 109 tq and the bike runs great. I just like to tinker.
I figure the 107 with 555 cams would put me over the majic 100/110 mark easily, I would get to do another build and to me, thats ALMOST as fun as riding.
I am just a little concerned about thin cylinder walls.
I could just put in some 555s and retune, but whats the fun in that?
Thanks again,
Doug
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Road Master
Joined: Jun 2008
Posts: 868
Likes: 1
From: Trenton,N.J.
I am seriously considering a 107 kit from FuelMoto for my 08 RoadGlide. I am looking for some input from anyone that has a few miles on one of these builds.
They put out impressive numbers but I am concerned about longevity.
The MoCo (people that design, engineer and build this type of motor for over 100 years) seem to think that anything over a 103 (3.875 bore) must have thicker cylinders with larger spigots that require case boring.
Although I want a "fast" bagger, this is still a touring bike. I like to ride from Florida to Wisconsin each summer to visit my parents (and Harley Davidson, the Packers, and Miller brewery). I also like to ride to Sturgis every other year.
So I am looking for input from anyone that has but some miles on a 107. 5, 10 or even 15 thousand miles, how are things still working? I am concerned about heat (presently have a 103 build) and too thin cylinder walls.
Thanks for your time,
Doug
They put out impressive numbers but I am concerned about longevity.
The MoCo (people that design, engineer and build this type of motor for over 100 years) seem to think that anything over a 103 (3.875 bore) must have thicker cylinders with larger spigots that require case boring.
Although I want a "fast" bagger, this is still a touring bike. I like to ride from Florida to Wisconsin each summer to visit my parents (and Harley Davidson, the Packers, and Miller brewery). I also like to ride to Sturgis every other year.
So I am looking for input from anyone that has but some miles on a 107. 5, 10 or even 15 thousand miles, how are things still working? I am concerned about heat (presently have a 103 build) and too thin cylinder walls.
Thanks for your time,
Doug
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Road Master
Joined: Sep 2006
Posts: 1,062
Likes: 4
From: Arizona
Since you are tearing into it anyway. Might as well go to 107", not a lot of coin at that point. Since the heads are done, cam choice is your only issue. Keep the compression at 10-1 and pick your cam and your good. Cylinder thickness is a non issue.
The factory 103 works well but you will see pretty significant gains with the 107 especially on the torque side. The factory 103 uses a low compression cast piston, the FM 107 uses a higher compression 10.25:1 forged piston. Having tested and tuned hundreds of factory 103's and FM 107" builds, a TW-555 equipped 107 will generally make +7-8Hp and as much as +10-12Tq more than a TW-555 equipped factory 103 with the same setup, and the lower end and part throttle performance may show even bigger gains.
Absolutely no issues with the cylinder wall thickness.
Absolutely no issues with the cylinder wall thickness.
__________________
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com