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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Eric Gorr Big Bore Kit
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[QUOTE="endurohero, post: 659158, member: 41277"] When eric did the big bore did he bore it off center to avoid having to modify the power valves? The reason why I ask is a local company offers a big bore and plate job for about 400 bucks canadian and a local moto guy got it done for his son's 02cr and the nightmare began.First, they didnt correct the port timing or change total area of any ports.Second they didnt correct the head for volume or squish clearance they just turned it off center aswell.(The deck of the cylinder was never changed from stock.)When the top end was reassembled and ran up it didnt seem to have much zip.After re jetting(dont ask what they came up with because that day they had almost perfect air/density)pipes reeds ignitions they where not happy so they struggled along until it threw a rod, rebuilt it and threw it again and then again then sold it for parts.Iwas wondering if anybody has heard of this problem with boreing off center. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Eric Gorr Big Bore Kit
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