Piston Weight - Yamaha Raptor Forum
 
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post #1 of 5 (permalink) Old 11-30-2009, 08:18 PM Thread Starter
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Piston Weight

Weights stated below include piston, rings, clips, and wrist pin.

Stock piston setup is 535-540 grams

JE 12.5:1 102mm = 487.7 grams
JE 10.75:1 105.5mm = 490 grams
JE 12:1 105.5mm = 506.8 grams
Venom 14.25:1 105mm = 521 grams
CP 11:1 102mm = 524.9 grams
CP 12:1 105mm = 533 grams
Wiseco 11:1 103mm = 535.4 grams
CP 11:1 102mm (corrected deck height) = 545 grams
RE 14:1 102mm Lightweight = 545 grams
CP 13:1 105mm = 554-559 grams
RE 14:1 105mm Lightweight = 575-579 grams
Barkers Diamond 14:1 105mm = 596 grams

Last edited by wobble; 07-30-2010 at 09:55 PM.
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post #2 of 5 (permalink) Old 12-02-2009, 09:43 PM
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Good info... Can you run a CP 11:1 102mm on pump gas and with a HC3

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post #3 of 5 (permalink) Old 12-02-2009, 10:45 PM
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Quote:
Originally Posted by theidbreder View Post
Good info... Can you run a CP 11:1 102mm on pump gas and with a HC3
yes, we do it all the time..
the cp 11:1-11.5 are both a good base for building a nice stock bore pump gas bike

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post #4 of 5 (permalink) Old 12-04-2009, 11:03 PM
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Quote:
Originally Posted by dl700 View Post
yes, we do it all the time..
the cp 11:1-11.5 are both a good base for building a nice stock bore pump gas bike
I'll soon be tearing into mine during the winter. Mine gets mx duty. I'm looking to build this thing to keep up with those pesky 450s, so would a stock bore build be best for me or should I move up in size some? I need most of my power in the 3rd-4th gear range.



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post #5 of 5 (permalink) Old 10-08-2018, 12:50 AM
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Good and informative post, thanks for sharing
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