Big Bore Kits - 103, 107, 110...
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Tourer
Joined: Jan 2009
Posts: 478
Likes: 40
From: Bay Area - California Land of Libtards
Big Bore Kits - 103, 107, 110...
I'm interested in a big bore upgrade for my 2011 Fat Boy. At this point I'm asking questions and gathering information before spending and digging into it this Winter. I will be doing the work myself.
I watched the Fuel Moto videos on the 107 kit they sell, and well... so far I'm sold on Fuel Moto based on what others say about their customer support, and the video presentation. It looks to be a TOTALLY complete kit.
I have questions on this and the other kits too.
Is there any sort of compromise of "rideability" with a big bore kit? Heat, idle etc.. Of courese cam has a lot to do with this too. My motorcycle is my daily transportation, so I don't want to do something I will regret. However, I do find myself wanting more power and torque.
Do the other manufacturers, SE S&S, offer as complete of a kit as Fuel Moto? Like a start to finish package?
And lastly... the cubic inches. Does SE 110 build require bottom end work? What is the over-all difference between 103 to 110? 107 seems like a good middle of the road displacement. It's a little bigger than the current stocker HDs and requires no bottom end work.
Input of any sort is appreciated. Ride safe!
I watched the Fuel Moto videos on the 107 kit they sell, and well... so far I'm sold on Fuel Moto based on what others say about their customer support, and the video presentation. It looks to be a TOTALLY complete kit.
I have questions on this and the other kits too.
Is there any sort of compromise of "rideability" with a big bore kit? Heat, idle etc.. Of courese cam has a lot to do with this too. My motorcycle is my daily transportation, so I don't want to do something I will regret. However, I do find myself wanting more power and torque.
Do the other manufacturers, SE S&S, offer as complete of a kit as Fuel Moto? Like a start to finish package?
And lastly... the cubic inches. Does SE 110 build require bottom end work? What is the over-all difference between 103 to 110? 107 seems like a good middle of the road displacement. It's a little bigger than the current stocker HDs and requires no bottom end work.
Input of any sort is appreciated. Ride safe!
Road Captain
Joined: May 2011
Posts: 600
Likes: 0
From: Bama
I did the SE Pro Stg 3 kit but if I had it to do over I would strongly consider the Fuel Moto 107 and probably would go with it for the money. My suggestion is talk to other builders as well like Hillside, Big Boyz, etc. There are many options out there and the builders can give you all the correct info you need to do it right the first time. I would highly recommend doing head work since the motor will be torn apart and this will give you a better end result and gains.
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Tourer
Joined: Jan 2009
Posts: 478
Likes: 40
From: Bay Area - California Land of Libtards
Thanks for the input. I agree and will talk to the builders, but I also want the opinions of the guys (like us) who ride them every day.
The 110 needs the cases bored. I went with an S&S 106 kit. New jugs and pistons. Iirc fuel Moto just re-bores old jugs,not that there is anything wrong with that.
Going S&S was far more cost effective for me(Canada).
I wouldn't hesitate for a moment buying from either hillside or fuel Moto. Yes they both sell complete kits.
The power difference over stock is unreal. My bike makes 107hp/115tq. It hits 100 torque at 2300 rpms,6th is no longer a dog gear and all in all worth every penny.
My mileage is 42-45 highway. I did put an oil cooler on. A jagg 10 row and as far as heat goes I didnt notice any difference.
Go 106/107,best bang for the buck
Going S&S was far more cost effective for me(Canada).
I wouldn't hesitate for a moment buying from either hillside or fuel Moto. Yes they both sell complete kits.
The power difference over stock is unreal. My bike makes 107hp/115tq. It hits 100 torque at 2300 rpms,6th is no longer a dog gear and all in all worth every penny.
My mileage is 42-45 highway. I did put an oil cooler on. A jagg 10 row and as far as heat goes I didnt notice any difference.
Go 106/107,best bang for the buck
Outstanding HDF Member
Joined: May 2007
Posts: 2,215
Likes: 3
From: Vancouver, BC Canada
If you can afford to do the bottom end then do it. its not cheap but over the long term good insurance. Stay with the 107. best bang for the buck and you have a lot of choices. Do not forget that the proper exhaust is a must as well as a good tune and possibly a clutch upgrade. Be sure to do the heads from whatever builder you choose as this in combination with the pistons and cams creates the overall package. 107" kits -- TMan, HQ, Fuel Moto, GMR, Hillside, Pro Twin Performance are among the best I believe. SE does have the stage 4 kit with the heads but I do believe the builders can easily out perform that kit and most will say save your money. Whatever you do trust the builder and listen to what they say and recommend. good luck
Outstanding HDF Member
Joined: Oct 2011
Posts: 3,492
Likes: 19
From: Illinois
I have the SE high compression 96 stroker motor. It has a SE 6 speed too. More then enough, rides like a Big bike should. The 1 thing for sure? head work, head work, head work. It's the best performance mod you can do, IMHO!!!
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