450F Meet Elise

2strokesteve89

2strokesteve89

snowflake:
tomorrow evening I will pull the cam and see what size valve shim is in the right intake, I can't get any of my feeler gauges through.
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I'd say from the experience of my buddies who still own 4 skins (I'm working on their conversion) if you can shim them this time you'll need valves next time.
 
snowflake

snowflake

2strokesteve89:
I'd say from the experience of my buddies who still own 4 skins (I'm working on their conversion) if you can shim them this time you'll need valves next time.
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Yeah, part of me wants to pull the head and see what kind of shape that valve in particular is in, if its started to mushroom or if it can just be shimmed
 
snowflake

snowflake

Sorry, I lied, this is why Snowflake is a bad forum member kids.
But I did adjust all of them, they were still above 2.00 on the shim sizes (intakes both took 2.10 to be correct for example)

all this at exactly 66.6 hours.
 
O

ossagp

we used to set loose for more low to mid, and tight (on some bikes way tight) to get some top end. bucket overs' have made that safer. you can over do loose to the point you can find chatter marks like you are getting bucket and shim float
 
snowflake

snowflake

ossagp:
we used to set loose for more low to mid, and tight (on some bikes way tight) to get some top end. bucket overs' have made that safer. you can over do loose to the point you can find chatter marks like you are getting bucket and shim float
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I set them to the loosest end of the spec, left exhaust is .23 (should be .22) it has a little bit of noise but I'm not worried
 
O

ossagp

on the older push rod engines like a jawa or british bike .011 thousandths on the exhaust was not at all uncommon, especially for ones that were going to run long and hot. ohc air cooled engines were .008 to 009. lots of times, the cam companies always seemed to have different ideas than the motor companies.
 
Redordead89

Redordead89

ossagp:
on the older push rod engines like a jawa or british bike .011 thousandths on the exhaust was not at all uncommon, especially for ones that were going to run long and hot. ohc air cooled engines were .008 to 009. lots of times, the cam companies always seemed to have different ideas than the motor companies.
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Collaboration is a wonderful thing in hindsight but we didn't have google back in the day so as you well know an awful lot was trial and error for the field bike gang like me running worn out xl125's and the likes in the late 80's and early 90's over here:ride::crash: :mad:
 
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