Another Mercruiser Prop question

[bcbogart]

I have a new '09 Caravelle 206BR, 5.0L 220HP, Mercruiser outdrive. Came fitted with aluminum 14.25 P21 prop. Runs fine, but want to save that prop as an emergency prop and put a stainless steel prop on. Could someone recommend a brand and diameter/pitch combo for me. Do I need to change diameter/pitch when swapping to stainless? Sorry, didn't get the RPM and now not in the same location as the boat. Thanks.

 

[usskydvr]

Re: Another Mercruiser Prop question

14 1/4 x 19 for heavier loads/water skiing. 14 1/4 x 21 for cruising/speed
Look for a prop that uses an XHS hub. This will allow for a bit less expense if you want to change again, also eliminates any spun hub issues. I have had Mercury, Michigan Wheel , and Turning Point stainless props , all were fine.
Look for the best deal.

 

[QC]

Re: Another Mercruiser Prop question

Really need the RPM to help here . . . if you are already near the low end of the range then going same pitch with a stainless would be bad . . . Really need to verify everything to make good recommendations. Your plan is perfect, but need the 411 . . .

 

[bcbogart]

Re: Another Mercruiser Prop question

My brother in law is going to launch the boat and check RPM at FOT. Getting wife to find the recommended max in the owner's manual is another matter.

 

[bcbogart]

Re: Another Mercruiser Prop question

Also had a tech at propmd recommend either a Silverado 13.75X21 or Power TechRAS 14.25X19. Any comments on his recommendations?

 

[usskydvr]

Re: Another Mercruiser Prop question

The recommended max RPM for that 5.0L is 4400-4800. Both are good props although I'll bet you can find the Quicksilver for less $$'s

 

[bcbogart]

Re: Another Mercruiser Prop question

The nephew and wife ran it this evening. Full down trim FOT 4250 RPM. Trimmed 4400 so I ordered the American made Power Tech RAS 14.25P19.
Thanks everyone for your advice. I think this should work well.