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Old 12-26-2012, 10:22 AM   #28
Bored Of The Rings
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Joined: Jun 2011
Location: Auckland,New Zealand
Oddometer: 1,678
I've been reading this thread as my R90 racebike has a copy of the 336 cam made by a local reputable cam company.
It goes well for a bike with a motor that cost $250 that although has been pulled apart, new rings/bearings fitted, guides relined and a few minor mods is still running the original 1973 pistons and valves..... had a good season on it, 20 odd races and only one DNF.
I don't know what power it turns out or what the compression ratio is .....hey SS is there any room under your rock.....

I did a build thread on it .....
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