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ContinuousWave: Whaler Performance
Twin 70's or 150?
|Author||Topic: Twin 70's or 150?|
posted 07-18-2003 12:12 PM ET (US)
I am looking into the possibility of repowering my 87' Outrage and I'm not sure which avenue to take, twins or single engine. If performence and reliability were the key factors and not price, which make and model motor setup would be the best. Going the twin route seems to be initially more costly( maybe even later on as you have two to maintain) but fuel effeicency and piece of mind is the trade off. I trailer my boat in and around the waters of Long Island going offshore occasionally. Any comments would be appreciated.
posted 07-18-2003 12:37 PM ET (US)
Twins, but I would go larger. Two 90's would be sweet. Just make sure you insure it correctly.
posted 07-18-2003 01:20 PM ET (US)
How big is your boat and what is the maximum HP?
posted 07-18-2003 02:29 PM ET (US)
I have seen the same thing with twin 70s and it was fine, but twin 90s would be sweet.
posted 07-18-2003 02:52 PM ET (US)
I'm a new owner of 82 18' outrage
I know transom was built to hold two engines, but with the weight of the 70 -90 4 strokes, can those transoms hold 'em?
I'll probably be repowering(150 yam)in winter (no winter in Fl:)am thinking 150 4-stroke, maybe 2 80-90's but man, that's a heck of alot of weight with twin 4's right?
posted 07-18-2003 03:18 PM ET (US)
In the North Channel Rendezvous section, you can see my 18 Outrage with twin 305# engines, set back 10". The boat handles this engine weight quite well, but I would not go too much higher unless engines are directly on the transom.
Since you mention "70" hp, I assume you are talking Yamaha 2-strokes. I would not use these, since they are light on "cubes" and alternator output (only 6 amps). I would go for the Yamaha 90's instead, which are about 80-85 HP engines with 10 amp alternators. Nor would I recommend E/J twins, for the ONLY reason that they don't have integral oil tanks. This is a rigging/space headache in the 18 Outrage. If you want to stay "legal" with twins, I would recommend the Mercury 75's, with integral oil tanks and 18 amp alternators. These are VERY strong engines for their HP rating and will give you the best twin power within the 150Hp rating of the boat.
If you are interested in twin "clean technology, you're pushing weight, but could manage it, with any of the offerings, Suzuki 70's, Ficht or Optimax 75's. My last choice here would be the Yamaha/Merc 75 or 90 4 strokes, also the heaviest.
For a big single, a Yamaha or Mercury 150 EFI 2-stroke is hard to beat. A 140 Suzuki might be worth a look, but it is not as fast as the Mercury or Evinrude DFI 135's. Obviously the 150 DFI's or traditional carbed engines, all brands would work fine also.
posted 07-18-2003 05:15 PM ET (US)
The new Tohatsu/Nissan LPDI 70/90s are a great opinion in this case.
posted 07-18-2003 05:30 PM ET (US)
Sorry, boat is 18' max HP 150
posted 07-18-2003 06:51 PM ET (US)
I am in the same boat, I have an 18' Outrage with blown '97 Ficht 150. This engine gave me lots of trouble. I troll, pleasure cruise, and pull the kids skiing and tubing. Reliability means a lot to me so I'm leaning toward a Honda 130. Is that reasonable?
posted 07-19-2003 10:10 AM ET (US)
Twin Honda 130's are out of the question!
posted 07-19-2003 01:42 PM ET (US)
I meant a single Honda 130. I called Boston Whaler yesterday and customer service rep thought it was a fine choice. I am new to this forum but am concerned because I have seen no posts suggesting a honda 130 for an 18 outrage. Am I missing something? I am about to buy so would appreciate comments.
posted 07-21-2003 10:16 AM ET (US)
You will be much happier with a 140 Suzuki/Johnson, more power less weight, easier to find parts and service people
posted 07-21-2003 02:18 PM ET (US)
There is previous discussion to be searched out here regarding a Honda 130 on an 18 Outrage.
posted 07-21-2003 08:21 PM ET (US)
I have a single 2002 150 Johnson 2 stroke on my 83 18'
outrage. I get 44 mph gps wot . I was thinking about
getting twins but decided aganst due to extra weight,
and $1,200 to change steering. The 150 has all the power
you need for this rig and is a true 6 cyl. the 140 would
have to work real hard in a bad sea condition being only
a 4 cyl . I think the 150 2 stroke is the way to go with
this boat just my opinion .
posted 07-21-2003 08:35 PM ET (US)
I have a 2S 150 on mine now, and I agree it's more than enough power, torquey enough to run and hold 2600 RPM on plane at about 15-16 knots in the worst conditions. Why couldn't the 4 cyl be propped down for offshore duty to be able to get more low-end power?
posted 07-25-2003 02:55 PM ET (US)
I repowered a year ago with a carb 150 johnson and love it! the boat handles great with that 60 degree v6 block, plenty of power.
posted 07-25-2003 03:52 PM ET (US)
I repowered with a '03 Suzuki 140 4-stroke and use it about 85% of the time for offshore trolling (out to 50+ miles offshore). The power is fine.
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