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Thread: piston pics
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06-02-2008, 01:21 PM #1
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- Jan 2008
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piston pics
Hi,
What do you think about these pistons? rich/lean??
these are from a twin carb GP800R
Front piston is the darker of the two and the lighter one is the rear.
Thanks
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06-02-2008, 01:29 PM #2
1st is a little, 2nd is just right
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06-02-2008, 01:55 PM #3
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- Jan 2008
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a little lean?
would you say safe to run or richen one eighth/quarter
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06-02-2008, 02:43 PM #4
Open that screw up a bit
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06-02-2008, 04:33 PM #5
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- Jan 2008
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thanks....i take it you mean the high speed screw
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06-02-2008, 05:14 PM #6
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06-02-2008, 10:01 PM #7
I'd take the highs all the way in first and count how many turns your currently at. If opening them up any more takes you over 2 turns out then it's rejet time...
Is this a stock ski?
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06-02-2008, 10:48 PM #8
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- Jul 2007
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- 134
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gp8r, didn't you have a head gasket problem causing low compression on that cylinder? If so, you can not determine the fuel mixture from piston wash on that piston until it has been running correctly. How many turns out on the high speed needle are you on the PTO piston?
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