Bit of a bugger trying to decide which is the top ring. Finally sorted it by putting them in a vernier caliper, but there's not much in it is there?
You'd think they could stamp t and b on there wouldn't you? _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
Hmm. Snot easy though is it? I even read the workshop section to check, and I'm not sure I understand what you're getting at with the 'keystone' bit.
Maybe it's just the bad light in the workshop, cuz my eyes are perfect.
Or more likely the skinfull I had last night has blurred my brain! _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
Cheers bud. I assume 'keystone' is a Honda description, but I'm not sure why they arrived at it.
I'd call it a chamfer... _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
Having pondered this since the last post... it may be because when building a stone arch bridge, there was a 'key' stone at the centre, shaped as the ring is, which held the whole bridge together. _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
Yeah, I'm rebuilding my engine, but I can do that, reply to forums and think at the same time! _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
What did you do about that cyclinder I lent you? Just gonna slap it all on or what? I dont want you killing it or anything you hear, ive got about 6 dead ones at home now anyway... and i dont need any help. _________________ If I have to take the carbs off once more...
I've cleaned all the gasket crap off, and the corrosion as best I could, and it's now torqued down. i don't want it killing my piston either!
Once we've decided where I should send my barrel to, and I've had it replated, I'll swap them over and send yours back. Unless I sieze it first, in which case I'll fix it then send it back!
Incidentally, What do the L2, L3 and H3 marks on the side of them signify? _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
So I shouldn't have tapped it home with a mallet then?
Only joking. It wouldn't fit so I left it off... _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
The idea of the keystone top ring is for it to expand against the bore to giving better sealing. It's also helps against the ring sticking inthe groove.
It will only fit comfortably in the top groove the correct way up.
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