What's the advantage of using a 2.5 Sportmaster on a 3.0 engine?

[beer30]

Is the 2.5 Sportmaster housing smaller? Does the 2.5 Sportmaster leak like the 3.0's?? Do you need some kind of adapter to mount it up? Thanks for the help.:) Chuck

[Simon]

There is no advantage and they have a small water pump.

[stvhelm]

2.5 is a racheting case. if the motor stops the prop will still turn. with the 3.0 if the the motor quits the prop stops and acts like a rudder:eek:. i dont think one is faster than the other

[beer30]

2.5 is a racheting case. if the motor stops the prop will still turn. with the 3.0 if the the motor quits the prop stops and acts like a rudder:eek:. i dont think one is faster than the other

Is the 2.5 case smaller?? Wouldn't that be less drag in the water?:confused: Chuck

[bigtis]

Is the 2.5 case smaller?? Wouldn't that be less drag in the water?:confused: Chuck
Chuck, I run 1.75's in my sporty. 1.75's and 1.62's are 3.0 gears. I have em in a 2.5 case!!! purty sure the have almost the same dimensions.

[hotbeek]

Is the 2.5 Sportmaster housing smaller? Does the 2.5 Sportmaster leak like the 3.0's?? Do you need some kind of adapter to mount it up? Thanks for the help.:) Chuck

Does any 2.5L lower fit on a 3.0L ? This would open up a much broader search for me !:confused:

[Frank Molé]

Does any 2.5L lower fit on a 3.0L ? This would open up a much broader search for me !:confused:

no wont fit

[baja200merk]

so the 2.5 sporty never came with 1.75 or 1.62 gears, it wont fit a 3.0 but it ratchets with 1.62s and the 3.0 cannot ratchet :confused:

[DSP1]

I looked at a 2.5 SM and a 3.0 SM side by side - the 3.0 definitely looks a lot bigger, especially at the rear above the torpedo - can't see how there could not be a performance difference. May be this owuld be minmised if they were ran real high

[Scream And Fly]

Is the 2.5 case smaller?? Wouldn't that be less drag in the water?:confused: Chuck

The cases of the 2.5 and 3.0 Sportmasters are exactly the same outside dimensions (where it matters).

[beer30]

Then my idea doesn't serve any purpose.:) Chuck

[Markus]

In addition to ratcheting, the 2.5 liter Sportmaster does not have the leakage issues of the 3 liter Sportmaster.

Taylor Marine sells a midsection that allows you to use a 2.5 liter Sportmaster on a 3 liter engine.

[CharlieB]

wouldn't the drive shaft have to be replaced also. I know they are diff splines and diam.

[beer30]

In addition to ratcheting, the 2.5 liter Sportmaster does not have the leakage issues of the 3 liter Sportmaster.

First Sportmaster I had on my 300x, lasted 4 1/2 years. The pounding it took from my 21 Skater egged shaped it. It never ever leaked!!!:rolleyes: This one I have now ( purchased brand new from Merc) won't stop leaking. I got the twin shift shaft seal upgrade from Taylor 2 months ago. Ordered the Billet seal package for under the water/pump yesterday. I never hear about these problems on the 2.5 Sportmaster.:rolleyes: Chuck

[THE HOGG]

then My Idea Doesn't Serve Any Purpose.:) Chuck

When Wayne Taylor Was Alive I Tried To Get Him To Build Me A 15" Offshore Mid With A 3 Litre Case For My 3 Litre Motor(instead Of The 3 Litre To 2.5 Case One That I Have). He Said That He Had Already Made Them And Would Sell Me One If I Insisted But He Swore That The 2.5 Case Was 3 To 4 Mph Faster. So Far I Havent Had Any Complaints And No Water Issues Like The 3 Litre Case. I Also Had Mine Switched From 1.87's To 1.62's(shoulda Stopped In The Middle!!). As For The Driveshaft I Just Took It To Jack And He Cut The 2.5 Splines Off And Welded 3 Litre Splines On.