www.iFourWinns.com

on a volvo dual prop, how should the props be arranged upon re-assembly? i would think they should go so that the blades are not on top of each other, but staggered. there is no keyway that allows them to be installed only one way. Thanks - Ryan

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republicans, working hard so you dont have to.

Just put the prop in on the splines and that will do it.

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Walter

2003 248 Vista - VP 5.0 GXi
2009 Toyota Tundra SR5 5.7L 4x4

Don't forget to grease the prop shaft, OMC/Bombardier triple guard grease works great for shaft splines (waterproof marine grease). I have heard that Volvo DPs can be tough to remove if you don't grease em.

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II

so they dont need to be in any particular orentiation to each other?

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republicans, working hard so you dont have to.

Technically, they should be "timed," but not many people see any performance difference by doing so. On the other hand, if you already have them off, it doesn't take any more work to time them. It just means that you put the front prop on with two blades pointing to 10:00 & 2:00, and then put the rear on with one blade pointing to 12:00. The theory behind it is that you don't want the blades on both props passing each other right behind the drive, since that's an area of lower water pressure and so you'd have two blades (of the 6) not getting a full "bite" in the water.

Dittos on greasing the shaft before installing them. They can become darn near impossible to remove if you don't. In addition to the products mentioned, Volvo makes a prop shaft grease (#1141644) that is more environmentally friendly than most greases. A "lifetime supply tub" runs around $20 IIRC.

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Mike
2005 Four Winns 230/240
VP 5.7GXi/DP
1998 F-150 XLT
Boat Pic

I always make a mark on each prop before I take them off to change the oil, that way there is no question of how they should go back on.

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One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

Man!!! You guys are way over thinking this. There is NO way to time. Nor does it matter, they are counter rotating! No matter how you place/time them, both props will be Inline with each other at some point!

Yes, but they need not pass each other at the same time they're passing the drive. Some folks have done A/B testing with this and found significant improvements with them timed. Most IMO do not.

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Mike
2005 Four Winns 230/240
VP 5.7GXi/DP
1998 F-150 XLT
Boat Pic