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Vintage Bikes Thread, valve train in Help / Advice, How-To's & Performance; which = broken valve or more quickly to replace well, thank you for your help anything ...
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Old 08-10-2008, 03:03 PM   #11 (permalink)
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which = broken valve or more quickly to replace
well, thank you for your help anything else i need to know?
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Old 08-10-2008, 03:03 PM   #12 (permalink)
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I would port and polish while I had the guides out.
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Old 08-10-2008, 03:12 PM   #13 (permalink)
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well, i don't really know how i need to port it...

and i should only polish the exhaust right?
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Old 08-10-2008, 04:02 PM   #14 (permalink)
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Yes, exhaust should be mirror finish. For the intake, they suggest about the same finish as if it was sanded with 120 grit paper. You do want to make the intake too smooth because fuel and air will not mix properly. You can also remove the casting flaws in the intake port as well.
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Old 08-10-2008, 04:37 PM   #15 (permalink)
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so i don't actually have to change the ports shape? thats the part that makes me nervous
it would be nice if i could get 1 or 2 more hp out of it
running a high compression piston would be bad for the woods wouldn't it?

should i mirror the combustion chamber as well?
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Old 08-10-2008, 04:44 PM   #16 (permalink)
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Maybe swirl it so it still mixes
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Old 08-10-2008, 04:51 PM   #17 (permalink)
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maybe i should make some type of vortex thing lol
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Old 08-10-2008, 04:59 PM   #18 (permalink)
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Yeah with a blower!!
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Old 08-10-2008, 05:06 PM   #19 (permalink)
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... don't get me started... lol
i could run a blower off the timing chain so easy...
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Old 08-10-2008, 05:15 PM   #20 (permalink)
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5,4,3,2,1........Blast off!!!!

I wouldn't mirror the chamber though, just the exhaust like Tig said
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