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Everything Dirt Bike
Make / Model Specific
Yamaha
shims or valves?
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<blockquote data-quote="charlieyz" data-source="post: 231970" data-attributes="member: 6530"><p>hi guys, i have an 02' yz250f and i decided to check the valve clearances as it was running poorly what I found wasn't quite what I would've liked, my intake clearances were either 0.01mm or touching and my exhaust clearances were at 0.10mm. i pulled the shims and by my calculations for the intake i would need a 1.55mm and 2x 1.65mm shims and for the exhaust i would need 2x 1.75mm shims. what do you guys think should i pull the head and do valves or just shim them keep on running it but keep checking in on it to make sure the clearances arent changing further</p></blockquote><p></p>
[QUOTE="charlieyz, post: 231970, member: 6530"] hi guys, i have an 02' yz250f and i decided to check the valve clearances as it was running poorly what I found wasn't quite what I would've liked, my intake clearances were either 0.01mm or touching and my exhaust clearances were at 0.10mm. i pulled the shims and by my calculations for the intake i would need a 1.55mm and 2x 1.65mm shims and for the exhaust i would need 2x 1.75mm shims. what do you guys think should i pull the head and do valves or just shim them keep on running it but keep checking in on it to make sure the clearances arent changing further [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
shims or valves?
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