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tlguil66

1993 2520 Max HP

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Does anyone have a 2520 with twin 250's 2 strokes on the back of there boat? looking for some Info to repower my boat.

Thanks,

 Ted

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Well I went a head and put twin 250's on it going to finish it up this week and test it out.  

Boatmotors.jpg

Boatmotors1.jpg

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Jack plates, too...interesting!  Let us know how it runs.

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Took the boat out last Friday to test run it had to remove the jack plates because the motors were to high and I couldn't lower the motors with the jack plates because the steering ram was going to hit the transom  when I trim up. So I removed the jack plates reset the motors and went test run it again last Sunday ran a lot better top out at 53 mph but was only turning 5100 rpms so now I am going to get the props rework to get it to turn up to about 6000 rpms  

boatrunning.jpg

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Those numbers sound good, but you may want to consider buying different props instead of re-working the current ones.  It takes a 1 inch reduction in pitch to gain 200 rpms, so you are looking at knocking out 4 inches of pitch.

Before messing with props, how is the cavitation plate in relation to the bottom?  It should be 1 - 1.5 inches above the bottom directly in front of the motor.  Too deep could be causing too much drag and holding down rpms.  It is a lot cheaper to raise the motors, if needed, than mess with props.

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