Clairify 103 to 110
Cruiser
Joined: Nov 2017
Posts: 146
Likes: 23
From: Leatherstocking Country
Which set of cams did they quote your build on...777"s?
Stellar HDF Member
Joined: Feb 2010
Posts: 3,400
Likes: 268
From: Southern California
Yes, it needs the 110 4" Gaskets. I've had good luck with the Cometic MLS Head Gaskets. Plus they're a bit thinner than stock and that gets you a very slight bump in the Compression Ratio, which is a nice benefit.
Cruiser
Joined: Oct 2019
Posts: 119
Likes: 15
From: Florida
You can turn a 103 into a 110 but you either need to bore the case to accept the larger diameter spigot of the original equipment 110 cylinders that come on the CVO's -OR- you can purchase a drop in 110 piston and cylinder kit from Harley. (Harley Part Number: 92500039) This "kit" uses a steel cylinder liner inside the cast iron cylinder barrel. Using a steel liner allows for a much thinner spigot. The spigot is the part of the cylinder that extends into the case. FWIW, the piston rings and thus the burning fuel mixture never get close to the spigot. Something VW and Porsche did decades ago on their air cooled engines. Anyhow as a result using this kit doesn't require that the cases be machined. I put this 110 piston and cylinder kit on my originally 103 2015 Ultra Limited (along with heads and cams, etc., etc.) and that was close to 20,000 trouble free miles ago.
Cruiser
Joined: Nov 2017
Posts: 146
Likes: 23
From: Leatherstocking Country
I do like the 999-6a's...not looking to go with that kind of duration, but they just really seem to throw good numbers and show a nice curve. They do seem to build early and carry out to 5250 very nicely. Just never seem to see many done with 2-1-2 exhaust and when you do, they're done with disc style cans.
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