131 Engine Upgrade started!
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Seasoned HDF Member
Joined: Jan 2007
Posts: 5,534
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From: Virginia
131 Engine Upgrade started!
My 2017 CVO limited has 22k miles and has been 100% trouble free. The engine is 100% stock with the exception of slip-ons. The biggest thing I did was get rid of the stinky boom audio when the bike was new with a 100% focal upgrade and a Rockford dsp. The spiked olive color scheme in my opinion is one of the best, iconic paint schemes HD has ever done and I want to keep this bike. Since the warranty was over, I have decided to bump the 114 up to 131 with the new SE bolt-on upgrade. Kit includes: CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves, Stage IV Timer Cover, SE8-517 High-Lift Cam, Forged High Compression Pistons, High Performance Cam Bearing and Tappets, 4.31" Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold and High Flow Injectors (5.5 g/sec). My dealer is giving 20% off parts and labor for the winter months so I ordered the kit today, it should arrive around 2/10 and hopefully I'll have the bike done around 2/18. The additional items I had to purchase was the sprocket retention kit, the spacer kit, the street tuner and the newest high capacity oil pump. I'll post the dyno results when the bike is done and I have about 2 weeks to break it in before I take it for a 3k mile trip to bike week.
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Joined: Mar 2009
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From: Niles Canyon Ca.
What the bore & stroke on the 131 now ? Asked this another thread but all they seemed to know is endless banter about dyno torque & HP curves. Getting this big there can't be much piston skirt left.
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From: East TN
Bore is 4.310 x stroke of 4.50 for the 131 kit. The kit taking the 107 to 128 uses the same bore, but has the 107 shorter stroke.
Last edited by FLSTFI Dave; Jan 26, 2020 at 07:14 AM.
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Seasoned HDF Member
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From: Virginia
its on order from Harley, there is a 2 week lead time for them to build it. It should be at the dealer around 2/9 and then 3 days to take off the complete top end, install the new cylinders, cam assembly etc and to Dyno tune it. I'll keep everyone updated as it happens. Just waiting right now.
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Seasoned HDF Member
Joined: Jan 2007
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From: Virginia
Its the same stroke as the 114/117 motors. Bore is what increased, using similar idea as what they did with the 110 to 117 Kits with the cylinder sleeve
Bore is 4.310 x stroke of 4.50 for the 131 kit. The kit taking the 107 to 128 uses the same bore, but has the 107 shorter stroke.
Bore is 4.310 x stroke of 4.50 for the 131 kit. The kit taking the 107 to 128 uses the same bore, but has the 107 shorter stroke.
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