Originally Posted by Pretendpilot

evo 7-77
wait until you have to replace rings in one of these! horizon doesn't sell the parts. india sells the ring as part of a "cylinder assembly" (piston, ring, cylinder, stuff that attaches cylinder to case) for much more than the price of a ring would cost, but the tool to remove the head from the cylinder will cost you $750 (india) as quoted me from ums. ums DID say that they'd consider a special case for rings only, but I haven't got back with them on that yet (took 3 times- waiting couple days 2 times, to get an answer from horizon hobby). so heare's the dilemma: see if and how much$ rings from india will be; get cylinder assy from india just in case its necessary - BUT I don't have the tool to install it on the head! ... I don't think HH will do just that part, and its ridiculous to think of getting charged for that.
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I have heard of the rings, and maybe a cylinder, being replaced by owners a couple times previously on these engines. can any of you that have done it tell me how (tool?) and where you got the rings/cylinder from?
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thx, andy