Did I buy the wrong prop?

[steam_mill]

I've got a 2003 90 hp classic two stroke.<br /><br />I bought a prop off ebay. Part number is 48-78122-21. Currently will turn close to 6000 RPMs. (did it once, never again) with a 17" prop.<br /><br />Figure to drop me 800 rpm would be perfect. I'm not by the boat.<br /><br />Is this the wrong prop. It was advertised as a 13X21 prop. Could not find part number on Merc website.<br /><br />If it is the wrong prop, any buyers? I think it may be for the 135 and bigger...<br /><br />Tx.<br /><br />Joe

 

[Mettaree]

Re: Did I buy the wrong prop?

Prop number: 48-78122-21 is a 21" pitch , <br />16 degree rake prop for Black Max 150hp and up.<br />According to site I was able to visit.<br /><br />

 

[steam_mill]

Re: Did I buy the wrong prop?

Yup, I think I bought the wrong prop....<br /><br />Could someone please measure the diamter of the hub and the exterior of the exhaust hub on a recent vintage 90 hp Merc Classic. <br /><br />I've got 4.5 inches on the interior and 4.75 on the exterior. <br /><br />Seems I thought these were the dimensions on the stock prop....<br /><br />Tx.<br /><br />Joe

 

[quantumleap]

Re: Did I buy the wrong prop?

I believe yours should be a 4" diameter.