NEW M8 124 & 128 Fuel Moto Big Bore kits - Road Glide Forums
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post #1 of 15 (permalink) Old 11-12-2018, 03:09 PM Thread Starter
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NEW M8 124 & 128 Fuel Moto Big Bore kits

Our big bore kits have just got bigger. We are now offering a FM 124 kit for 107" M8 engines as well as a FM 128 kit for 114" & 117" engines.

Our Fuel Moto 124" and 128" M8 bore kits are true bolt on combinations (no case boring required) and are sold as complete kits with the absolute highest quality components, all of which have been extensively tested in house both on the dynamometer as well as in real world conditions to deliver top level performance. The 124" kit works on 2017-2019 H-D Milwaukee-Eight 107" engines (air cooled & twin cooled) and the 128" kit works on 2017-2019 114 & 117 engines. When combined with the appropriate performance modifications offers output in excess of 140+ horsepower.

These kits are complete with pistons/cylinders, cam, pushrods, lifters, & all necessary gaskets. MSRP is $1699.00
For more info visit https://www.fuelmotousa.com/p-33976



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Last edited by fuelmoto; 11-12-2018 at 06:16 PM.
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post #2 of 15 (permalink) Old 12-17-2018, 12:37 PM Thread Starter
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2018 CVO Road Glide: Fuel Moto M8 128 big bore kit, FM Level A CNC heads, Wood WM8-408 cam, SE ported 64mm TB, AIM SDR clutch, Jackpot XXX head pipe & Hi Roller mufflers, and tuned it with Dynojet Power Vision.



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post #3 of 15 (permalink) Old 12-18-2018, 01:27 PM
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So, why does the 124 actually make slightly higher numbers than the 128?

This coming from someone who knows jack s*&t about motors and am looking to at least understand why. Can it be contributed just to the slight variation in weather, compression of the motor, stroke? Are there any variations in the regular motor vs. the CVO motors that would lend itself to these results?


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post #4 of 15 (permalink) Old 12-19-2018, 01:24 PM Thread Starter
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Quote:
Originally Posted by RoadglideinMO View Post
So, why does the 124 actually make slightly higher numbers than the 128?

This coming from someone who knows jack s*&t about motors and am looking to at least understand why. Can it be contributed just to the slight variation in weather, compression of the motor, stroke? Are there any variations in the regular motor vs. the CVO motors that would lend itself to these results?
While the overall build's are nearly identical (the only difference is stroke) there are however relative differences between them; the biggest being they are different bikes on different days, in different conditions. Other considerations are the specific fuel in the tank, they each had different style air cleaners, and the tire/wheel size is different between both bikes. The CVO also had quite a few less miles on the bike.

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post #5 of 15 (permalink) Old 12-19-2018, 08:21 PM
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Nice numbers and graphs for sure. My questions are how is fuel pump being addressed, and what the bottom end? are there any issues with the crank? I feel like you would have some type of issues with the bottom end and that much power. No sumping?

Last edited by fuelmoto; 01-09-2019 at 11:32 AM.
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post #6 of 15 (permalink) Old 01-09-2019, 11:33 AM Thread Starter
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Originally Posted by 08poglide View Post
Nice numbers and graphs for sure. My questions are how is fuel pump being addressed, and what the bottom end? are there any issues with the crank? I feel like you would have some type of issues with the bottom end and that much power. No sumping?
We've built over 100 M8 engines over 135Hp with zero lower end issues. Pump fuel friendly, and no sumping.

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post #7 of 15 (permalink) Old 01-09-2019, 11:34 AM Thread Starter
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2019 Street Glide, FM M8 124" big bore kit, FM Level A CNC heads, Wood WM8-408 cam, SE 64mm TB with Ward manifold, AIM SDR clutch, Jackpot XXX head pipe & Outlaw mufflers, and we tuned it with Dynojet Power Vision


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post #8 of 15 (permalink) Old 01-10-2019, 09:35 AM
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Isn’t there, anything bigger for the 2018 M8 107?
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post #9 of 15 (permalink) Old 01-10-2019, 12:27 PM Thread Starter
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Isn’t there, anything bigger for the 2018 M8 107?
Not without boring the engine cases or changing the crankshaft to a longer stroke.

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post #10 of 15 (permalink) Old 01-10-2019, 12:39 PM
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Can you / Do you offer any kind of preloaded tuner for the 124" package? Something that would be close and at least rideable until you could get the bike chassis dyno'd?

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