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Its a head from a gx200 clone. It burned a head gasket so I took it off and was amazed there was no reversion (I did a lot of work to it but it was all "best guess"). It gets my gocart up to about 70 pretty quickly and about an hour of hard running per gallon. Ported and milled head, ported carb, cam, header are about all the mods so far. Am considering advancing the timing about 4 degrees. It was running a little rich but I swapped the jets so it should be close to spot on now.
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