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525SC Carb jetting

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Old 03-15-2011 | 09:01 PM
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Default 525SC Carb jetting

Cleaned my carb the other day, and noticed the jets were 102 on all 4 corners. Not real familiar with these motors but that just seemed a tad big. Boat runs real good, and never had a prob, other than it does seem to always be real thirsty. Just was curious what size jets is normal in these motors.
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Old 03-16-2011 | 02:11 AM
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Stock jets are supposed to be 98's in all 4 corners and even those are on the rich side. Unless its modified, I would drop down to 98's or lower to even maybe 96's up front. I have plenty of 98's since I increased the jetting in my old 525SC because of a cam and more boost. $10 for 4 #98 jets to cover my time and postage and they are yours.
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Old 03-16-2011 | 08:39 AM
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the motor is stock other than being .020 over, it was rebuilt 2 years ago and has 72 hours on the motor.
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Old 03-16-2011 | 06:51 PM
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With the new fuel mix out there, it would probably be in your best interest to check the plugs. Mine was experiencing high EGT's at WOT last summer that I atributed to the fuel. I think I don't want any more jet, but might invest in a methanol injection kit. Currently running 98's all around.
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