Motor hours and size

olddog22202 · Posted: Mon Sep 06, 2010 3:50 pm Post subject: Motor hours and size

Am looking at used CD's. Is a 70 HP outboard a decent motor for a 22'? Would < 650 hours on a early 90's Evinrude send up any warning signs?

What Search terms should I use to access the debate on CD w/ single vs two outboards?
thanks
Mike

Tug · Posted: Mon Sep 06, 2010 4:06 pm Post subject:

My boat has a DF70 Suzuki and it can go 30MPH on a calm day.I cruise at 18/19/20 MPH and it runs good.That said if i were to repower i would get a new Yamaha F90 just because i love Yamaha's and for the little extra power.Tug

Captains Cat · Posted: Mon Sep 06, 2010 5:02 pm Post subject: Re: Motor hours and size

Sneaks · Posted: Mon Sep 06, 2010 6:30 pm Post subject:

Mike, I'm just gonna disagree with Charlie, mainly because I'm in a disagreeable mood or maybe because I had a 4 stroke 75 hp on the Jenny B and was extremely satisfied. Given that the early Evinrude you're looking at is probably a 2 stroke, it's lighter weight puts us pretty even in the power department.

As for outboard hours, it sounds like the hours are reasonable given the age. I was lucky and just bought my C-16 with a 1993 Mariner on it and the hour meter was a totally believable 156 hours. If the compression is good and it's been serviced regularly you'll have 2-3 years before facing a re-power option. By then you'll know one whale of a lot more about your ride and your style of boating, which will be invaluable when it's time to choose your new outboard.

One has to remember and repeat OFTEN that the C-Dorys are not ski boats, racing boats, drug, or illegal alien running boats. They don't even like going faster than about 30 knots. The C-22 was designed around a 75 horse outboard. 5hp under that shouldn't be a deal breaker. 25 hp under that would be (IMHO) unless you got it for a price that left room for an immediate re-power.

Don

digger · Posted: Mon Sep 06, 2010 6:55 pm Post subject:

A 70 Johnson 2 stroke is what was standard equipment on most of the 22 C-Dories in the 80's and 90's. Some people had 88 Evinrude specials and 90 Johnson/evinrudes on the boat, but were for the most part the outlyers, as were the smaller 40 & 45 twins. RedFox was the renegade when he put the Yamaha 115 4 stroke on his, and said how great the boat performed when heavily loaded on the transom. The boat does just fine with the 70HP 2-stroke cause it is lighter, and develops a good power/weight ratio relative to the other motors. Ron

Tommy J · Posted: Mon Sep 06, 2010 11:23 pm Post subject:

As said previously the C dory was originally designed with a 70 hp 2 stroke in mind and they worked great. When the newer Hondas came out Tolands (the builder) switched to the Honda 75 hp (not the 90 hp and they would argue all day in favor of the 75hp). Today many are going to the higher HP in part because everyone is adding so much wt/equipment. We have a 91 Johnson 70hp with about the same hrs (650) and can't seem to wear it out- its been a great motor. I would have a mech check out any older motor - if maintained they can go to 1500 hrs. Not sure what we will do on repower.

Matt Gurnsey · Posted: Tue Sep 07, 2010 1:09 pm Post subject:

The inline 3 Evinrude / Johnson has been a great motor over the years.

As with any older motor, a compression and leak down test will tell a lot about what's going on internally.

As with all carburated motors be aware that the ethanol in today's fuel can cause ruanability problems requiring expensive carb repair / replacment. Anytime a sell says that a rough running motor just needs a "tune-up" to run better you should worry about ethanol damage.

Repowering with moden four stroke or Evinrude 2 stroke will be a $9-10K proposistion.

easternshore22 · Posted: Tue Sep 07, 2010 3:29 pm Post subject:

70HP works ok in the 22'. I recently purchased a 96 22 Angler with a 96 Johnson 70HP with low hours per the previous owner. The compression test was ok (130,135,120). It had a 14" 17 pitch prop at gave 4200 RPM/19mph at WOT. I changed the prop for a 14" 13 pitch and it gives 5400 RPM/23mph at WOT. I cruise at 4200 RPM/16 mph. (All numbers above with 4 adults on board).

It does not give the 30mph that others get, but it serves the purpose, of course I would like to re-power sooner than later with a 90hp...

Franco

Chris Bulovsky · Posted: Tue Sep 07, 2010 5:10 pm Post subject:

As some pointed out its not a race boat but remember two stroke motors like full throttle......this is something that seldom happens in my 22' cruiser. I have not nice things to say about late 80's Johnson two strokes in 70 Hp.

miserable at idle, Oil injection that sometimes work and lower units that invite water to mix with the oil.

Some guys love the Evinrude and Johnsons.......I'm not on that list.

But if it gets you on the boat you want.... buy it. Then dump the motor ASAP.

Just my opinion........Evinrude/ Johnson make me cringe.
Thumbs Down

Adeline · Posted: Tue Sep 07, 2010 7:45 pm Post subject:

NewMoon · Posted: Tue Sep 07, 2010 10:47 pm Post subject:

Our 1991 22 CD Cruiser had a 70hp Yamaha. Worked well until we loaded it up with cruising gear, fishing gear, and supplies for long trips. We replaced it with a 90hp Yamaha. I'd suggest 90 if you're going to carry a lot of stuff.

easternshore22 · Posted: Wed Sep 08, 2010 7:34 am Post subject:

olddog22202 · Posted: Wed Sep 08, 2010 11:45 am Post subject:

Thanks everyone for contributing to my body of knowledge on older outboards.
Unfortunately I snoozed and loosed on the CD I was looking at.

I had a date to be there examining it this morning but received a call last night telling me it had just sold. ..... the hunt continues.
Mike