right props for Crusader 270 (32' Trojan)

[pflathead]

Cant reach rpm at wot. Can only get 3100 on each engine. Suspect someone has changed props (do not match records). 16x 16 cupped now on boat. Anyone know what works with this combination? Need a place to start. Pflathead

 

[snapperbait]

Re: right props for Crusader 270 (32' Trojan)

What, if any, is the gear reduction on the transmissions?

 

[pflathead]

Re: right props for Crusader 270 (32' Trojan)

Hello Snapperbait<br /><br />Thanks for the reply, the trans are 1.5 to 1.<br />Any help would be much appreciated.<br /><br />Pflathead.

 

[DJ]

Re: right props for Crusader 270 (32' Trojan)

pflathead,<br /><br />The old "general rule" still applies here.<br /><br />1" in pitch is worth about 200 rpm's, up or down.

 

[snapperbait]

Re: right props for Crusader 270 (32' Trojan)

I'm thinking with those props and that gear, you should be pretty close...<br /><br />Engines in tune, or tired out? That's a whole bunch of boat for a pair of 350ci/270hp Crusaders to push.. Bottom clean?<br /><br />Might try here and see if Michigan will spec out a prop size for you.. http://www.miwheel.com/MIWheel/PropAnalysis/InboardAnalysis/InboOne.asp

 

[pflathead]

Re: right props for Crusader 270 (32' Trojan)

Thanks for the help. Checking out engines then will go to props. Pflathead