Yamaha 1988 2006 YFS 200 Blaster Cylinder Head with Cover | eBay
wghat size bore do you think this is ?
wghat size bore do you think this is ?
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what size bore ?
- Thread starter heatlbj6
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Think your crystal ball has a short circuit in it, that would make it a 238my crystal ball says it's been bored twice @ .20 over each time, making it a 240 cc big bore, LOL
the owner doesn't even know what bore it's on !
lol..or is that 236 :-/ Can't remember N/M. Lol..but if you add rocket fuel its a 300... I:I
it says right in there "dont know what bore it is"
i believe the second one is a 240 big bore that's why i doesn't have a bridge, correct me if im wrong anyone
i believe the second one is a 240 big bore that's why i doesn't have a bridge, correct me if im wrong anyone
Your right it doesn't seem to have one.. i kind of see something in there though. Ask for another pic if you can or ask seller.. even if one is there its super thin, it looks like a turkey reed lol..8-|
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What you see to the left lower of intake is the boysen port. Be aware that is a plated bore, if it's bad it's kinda pricey to replate.
Looking at the cylinder in relationship to the head gasket I would ascertain that the bore is slightly larger than it was originally bored owing to wear by usage.
With all due respect the question is like asking " how long is a length of string".
With all due respect the question is like asking " how long is a length of string".
Its tuff to tell from the picture,but I can tell that the exhaust port snagged a ring really bad. It will most likely need to go at least another .50 mm to clean that up,plus what ever bore its already at.
If you get it cheap enough and its beyond boring,you can always do a
"cut away" cylinder to learn things. Just saying it still has value of some sort one way or another.
If you get it cheap enough and its beyond boring,you can always do a
"cut away" cylinder to learn things. Just saying it still has value of some sort one way or another.
You got that right Blaaster!
I also want to add that PROPER PORT CHAMFERING could have prevented it from happening in the first place.
Think your crystal ball has a short circuit in it, that would make it a 238
the 240cc was in reference to all the craigslist ad whacko's that say a stock cylinder was just "over board" to a 240cc
Ain't none of us gots micrometer eyes, this almost rates as a stupid question
From standard bore to maximum over bore is only 5/64 of an inch, 1/16' heavy.
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