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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Piston rings Specialloid
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<blockquote data-quote="passenger0_0" data-source="post: 18320" data-attributes="member: 208"><p>Hi Pete,</p><p></p><p>I've also got specialloid pistons in my race engine albeit E7/11 but from the look of your pistons you are using 9:1 CR pistons which share the same size rings.</p><p>I searched internationally but could not get any rings and ended up using a manufacturer here in New Zealand who made me 6 piston sets for NZ$120. They were parallel compression rings and one piece oil control rings, all in cast iron, but after lapping them in into the bore with Brasso the engine goes great and has good compression (well it would with my CR) and doesn't smoke (only when throttling down from over 6,000 rpm and then wacking open the throttle). I know they are not fashionable anymore but cast iron rings will be a cost effective way to keep using these pistons.</p><p>Cheers David</p></blockquote><p></p>
[QUOTE="passenger0_0, post: 18320, member: 208"] Hi Pete, I've also got specialloid pistons in my race engine albeit E7/11 but from the look of your pistons you are using 9:1 CR pistons which share the same size rings. I searched internationally but could not get any rings and ended up using a manufacturer here in New Zealand who made me 6 piston sets for NZ$120. They were parallel compression rings and one piece oil control rings, all in cast iron, but after lapping them in into the bore with Brasso the engine goes great and has good compression (well it would with my CR) and doesn't smoke (only when throttling down from over 6,000 rpm and then wacking open the throttle). I know they are not fashionable anymore but cast iron rings will be a cost effective way to keep using these pistons. Cheers David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Piston rings Specialloid
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