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Pistons
Jul 24, 2014 23:02:09 GMT 1
Post by nigel1967 on Jul 24, 2014 23:02:09 GMT 1
Hi got a 1gu engine and cannot tell if it's been rebored or not. With taking dimensions how will I tell? There is arrow pointing toward the ex port(normal) and the letter W meaning what, any help as the bore is good so really just need a kit. Thanks for any help on this one...
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Post by stinkwheel on Jul 25, 2014 7:45:12 GMT 1
Usually if its been re-bored you will have another number stamped into the piston, often on the back half of the crown of the piston (back as if engine was in the bike)
it will say something like 0.25 or .50 indicating your oversize.
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Pistons
Jul 26, 2014 17:50:30 GMT 1
Post by nigel1967 on Jul 26, 2014 17:50:30 GMT 1
Thank, defo a W on it. Indicating standard and un touched bore I guess.xxxx
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Post by Pidz on Jul 29, 2014 4:01:43 GMT 1
I have absolutely no idea what the 'W' is for, unless someone can enlighten me? But the 'W' is not the mark for standard pistons, it is on all RD125 pistons, regardless of size. The only difference is oversized pistons will tell you the plus size from standard. A standard piston will show nothing at 6 o'clock on the crown. HTH.  
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Post by nigel1967 on Aug 1, 2014 18:04:38 GMT 1
T
hank you for your replys off to mark at racoon two strokes in the morning hopefully he will sort.. Happy days
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