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Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 10801
Experience:  40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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I have a 2001 baja 25 ft with a 502 eng. what pitch should

Customer Question

I have a 2001 baja 25 ft with a 502 eng. what pitch should be on my 4 blade prop ...what Is the top speed.....and how high should the tack read......
Submitted: 11 months ago.
Category: Boat
Expert:  Tan replied 11 months ago.

Hello. My name is Tan.

Do you know your drive gear ratio? The ratio will be stamped on the top port/left side of the drive.

Expert:  Tan replied 11 months ago.

What pitch prop do you have now?

Expert:  Tan replied 11 months ago.

Ok with a gear ratio of 1.5:1 the prop should be a 14.625 X 19. Rpms 4900 at 56.45 MPH. This is a 4 blade stainless prop.

1.65:1 ratio 14.625 X 21 RPMS 4900 at 56.45 MPH. 4 blade SS prop.

1.36:1 ratio 14.625 X 17 RPMS 4900 at 56.45 MPH. 4 blade SS

RPM range for this engine is 4600-5000 rpms.

These are calculated MPH and MPH using the Mercury Marine prop calculator.

Post back with questions.

Please don't forget to positively rate my help as that is the only way I get credit for helping you..Thank you.........Tan

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