Ring Gapping?
Outstanding HDF Member
Joined: May 2009
Posts: 2,160
Likes: 62
From: GA.
Depends on who you buy the stuff from. Places like Hillside will fit the rings to the cylinders. If that's the case, the rings will be on the pistons, and they will be marked. The corresponding cylinder will have the same mark. If you buy a kit and the rings aren't already on the pistons, but are still in the box, you'll need to gap them yourself.
Tourer
Joined: Mar 2009
Posts: 409
Likes: 8
From: SE WI
As Cuda said, and as an unsolicited general rule, "Never install new rings without checking the gap." period. It just isn't worth it. I .001" difference in bore is .003" difference in ring gap so it's real easy to get in trouble. For the price of a set of feeler guages and a little time, you'll sleep better and avoid some scored cylinders if the gap is non-existant in actual use.
Advanced
Joined: Jun 2010
Posts: 66
Likes: 0
From: Colorado
After hundreds of bb installations I never seen rings from a HD kit needing any further attention but we check them every single time just 4 conformation. After market I've no experience but a couple of Dave Mackey kits & they were set correctly out of the box as well. I'd check everything anyway just so you know its correct have fun & #ridesafe
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