Engine Mounting - Moderated Discussion Areas

  ContinuousWave
  Whaler
  Moderated Discussion Areas
  ContinuousWave: Whaler Performance
  Engine Mounting

search | FAQ | profile | register | author help

Author Topic:   Engine Mounting

mkelly posted 01-24-2014 01:07 AM ET (US)
1994 19' Outrage II, I'm pulling the trigger this week on repowering with Yamaha F150. I know we've been up and down on this one but anyone have a solid opinion on mounting height....ventilation plate maybe up 2" above keel? I'll need to instruct my guys doing the install.
Any other advice for a guy going into this? Propeller?
Lupi posted 01-24-2014 07:05 AM ET (US)
I do not have a significant experience, but for having changed my prop last year, I had very good advices from people here particularly from Tom Clark. I would say that the engine mounting height is directly linked with the propeller you will install. The prop you will install is directly linked to what you expect to do with your Outrage (pull skiers, fishing,...) and how it will be loaded (how many people, equipments...).
Tom W Clark posted 01-24-2014 12:20 PM ET (US)
The Yamaha F150 only has four set of mounting holes. I'd use the third set so the motor is mounted two holes up
o
o
o <-- bolts through this hole
o
I recommend the 14-1/4" x 17" Stiletto Advantage/Turbo 1
Tom W Clark posted 01-24-2014 12:58 PM ET (US)
CORRECTION: The 19' Outrage II (which is heavier and has a different transom) should have a Yamaha F150 mounted three holes up:
o
o
o
o <-- bolts through this hole.
mkelly posted 01-25-2014 08:25 PM ET (US)
I've moved the Mercury I blew up a few holes in the past & had a good experience. I'll mount it high & we'll see....go Hawks!
mkelly posted 01-26-2014 05:17 PM ET (US)
Tom, I still have my Quicksilver Laser II from the Mercury, numbers read: 48 16544 A41 19P. Wouldn't hurt to give that one a go while testing props. Load will be light & probably not much skiing or boarding. I do fish primarily out of it & will troll with the main engine, ditching the trolling motor.
Tom W Clark posted 01-26-2014 08:31 PM ET (US)
Yes, a 14" x 19" Laser II might work well too.
silentpardner posted 01-27-2014 05:47 PM ET (US)
Mount the motor all the way up as Tom has eventually recommended here and use the Yamaha black painted 17 pitch SS prop. You will be amazed.
That is MY opinion.
Tom W Clark posted 01-27-2014 06:19 PM ET (US)
I wouldn't use the Yamaha Painted Stainless Steel model for this application because it does not provide much bow lift. Its semi-cleaver design with less rake does provide good stern lift which works on my other Whaler models.
A few years ago I helped a fellow with a1993 Outrage 19 II find a prop for his Yamaha 150 (two stroke) and he had both the M Series and T series Yamaha Painted Stainless Steel model propellers. The boat porpoised when using them.
He also tried the four blade Mercury VenSura (Offshore) and it did not work well at all.
He eventually acquired a Stiletto Advantage.
mkelly posted 01-27-2014 06:48 PM ET (US)
I keep reading that the Stilleto provides increased bow lift....not sure what that terms refers to. Are they contending the bow rides higher out of the water while up on step or hole shot?
Tom W Clark posted 01-27-2014 06:58 PM ET (US)
Bow lift means that at speed, you can trim the motor out and the bow will rise, there will be less hull in the water and speed will increase. At cruising speeds, this manifests itself as improved fuel economy. At WOT it just means the boat is faster.
Propellers with lots of rake tend to lift the bow and hold it there. The problem with Yamaha Painted Stainless Steel model on the Outrage 19 II is that while trimming out the motor may lift the bow, the propeller can't hold it there so the bow drops, the prop regains bite and lifts the bow again in a never ending oscillation. This is what is meant by "porpoising".
mkelly posted 01-27-2014 07:06 PM ET (US)
That's my only complaint with my 19' II hull, it tends to porpoise....OK, then let's take advantage of a bow lift prop, thx Tom.

Hop to:

Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.

Author	Topic: Engine Mounting
mkelly	posted 01-24-2014 01:07 AM ET (US) 1994 19' Outrage II, I'm pulling the trigger this week on repowering with Yamaha F150. I know we've been up and down on this one but anyone have a solid opinion on mounting height....ventilation plate maybe up 2" above keel? I'll need to instruct my guys doing the install. Any other advice for a guy going into this? Propeller?
Lupi	posted 01-24-2014 07:05 AM ET (US) I do not have a significant experience, but for having changed my prop last year, I had very good advices from people here particularly from Tom Clark. I would say that the engine mounting height is directly linked with the propeller you will install. The prop you will install is directly linked to what you expect to do with your Outrage (pull skiers, fishing,...) and how it will be loaded (how many people, equipments...).
Tom W Clark	posted 01-24-2014 12:20 PM ET (US) The Yamaha F150 only has four set of mounting holes. I'd use the third set so the motor is mounted two holes up o o o <-- bolts through this hole o I recommend the 14-1/4" x 17" Stiletto Advantage/Turbo 1
Tom W Clark	posted 01-24-2014 12:58 PM ET (US) CORRECTION: The 19' Outrage II (which is heavier and has a different transom) should have a Yamaha F150 mounted three holes up: o o o o <-- bolts through this hole.
mkelly	posted 01-25-2014 08:25 PM ET (US) I've moved the Mercury I blew up a few holes in the past & had a good experience. I'll mount it high & we'll see....go Hawks!
mkelly	posted 01-26-2014 05:17 PM ET (US) Tom, I still have my Quicksilver Laser II from the Mercury, numbers read: 48 16544 A41 19P. Wouldn't hurt to give that one a go while testing props. Load will be light & probably not much skiing or boarding. I do fish primarily out of it & will troll with the main engine, ditching the trolling motor.
Tom W Clark	posted 01-26-2014 08:31 PM ET (US) Yes, a 14" x 19" Laser II might work well too.
silentpardner	posted 01-27-2014 05:47 PM ET (US) Mount the motor all the way up as Tom has eventually recommended here and use the Yamaha black painted 17 pitch SS prop. You will be amazed. That is MY opinion.
Tom W Clark	posted 01-27-2014 06:19 PM ET (US) I wouldn't use the Yamaha Painted Stainless Steel model for this application because it does not provide much bow lift. Its semi-cleaver design with less rake does provide good stern lift which works on my other Whaler models. A few years ago I helped a fellow with a1993 Outrage 19 II find a prop for his Yamaha 150 (two stroke) and he had both the M Series and T series Yamaha Painted Stainless Steel model propellers. The boat porpoised when using them. He also tried the four blade Mercury VenSura (Offshore) and it did not work well at all. He eventually acquired a Stiletto Advantage.
mkelly	posted 01-27-2014 06:48 PM ET (US) I keep reading that the Stilleto provides increased bow lift....not sure what that terms refers to. Are they contending the bow rides higher out of the water while up on step or hole shot?
Tom W Clark	posted 01-27-2014 06:58 PM ET (US) Bow lift means that at speed, you can trim the motor out and the bow will rise, there will be less hull in the water and speed will increase. At cruising speeds, this manifests itself as improved fuel economy. At WOT it just means the boat is faster. Propellers with lots of rake tend to lift the bow and hold it there. The problem with Yamaha Painted Stainless Steel model on the Outrage 19 II is that while trimming out the motor may lift the bow, the propeller can't hold it there so the bow drops, the prop regains bite and lifts the bow again in a never ending oscillation. This is what is meant by "porpoising".
mkelly	posted 01-27-2014 07:06 PM ET (US) That's my only complaint with my 19' II hull, it tends to porpoise....OK, then let's take advantage of a bow lift prop, thx Tom.