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650 rings....

Posted: Tue Apr 22, 2014 5:01 pm
by sparki
well, i suppose this is the same for any motor but... need some advice re replacing rings in the lil 650.

have a set here... no instructions in them. i understand the spacing etc and the oil rings/expander are no issue. the other two have markings on one surface so i'm presuming this is the upper surface?....

but... which of the other two is which. one feels as though its outer edges are a lot sharper than the other so i'm guessing this is the upper compression ring? the other feels a lot more "rounded" if that makes sense so is this the scaper?

any pointers appreciated :)

Re: 650 rings....

Posted: Wed Apr 23, 2014 1:55 pm
by sparki
found a wiseco ring installation guide... rounded one top compression ring... sharper edged one is the second scraper....

Re: 650 rings....

Posted: Thu Apr 24, 2014 4:36 pm
by kiwi k
Sorry Steve busy last night otherwise would off posted answer, yes your now on the right tracks
hrdp_0910_02_z+piston_ring_tech+[1].jpg

Re: 650 rings....

Posted: Thu Apr 24, 2014 4:42 pm
by sparki
cheers m8... got there in the end 'eh ;)

just need to get this thing together and in the bike. taking up space with bits everywhere at the moment it feels :)