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ContinuousWave: Whaler Performance
'93 Evinrude 70hp track record?
|Author||Topic: '93 Evinrude 70hp track record?|
posted 06-27-2002 11:24 AM ET (US)
Anyone have experience with this motor? I'm looking at a freshwater with low hours (aren't they all) to repower a '79 15' Sport. Cosmetics would tend to confirm hour claim. I'll be running it on a stand this weekend, checking compression, etc. Very nice price - would like to have deeper pockets for a four stroke but I don't.
I've owned close to two dozen inboards, IOs and smaller and very large outboards over the years but have no personal experience in this sort of small-to-mid-range motor.
Comments from anyone with this particular hull-power combo would be appreciated. This is my third Whaler, but it's the first 15'.
posted 06-27-2002 11:31 AM ET (US)
I currently own a 1981 Sport 15 with a 1989 70 Hp Evinrude. OMC made this 3 cylinder motor for many years. Great motor and pushes this hull to over 40 mph (with the 19" aluminum prop). I would recommend this model to anyone. Good Luck!
posted 06-27-2002 11:55 AM ET (US)
One of the best engines OMC ever made and the first looper developed. It started in 1968 as a 55hp and progressed all the way to a 75hp. I had the same boat and ran a 20"SS OMC prop and had it 2" above the transom. She would run 47+ on the GPS. Great engine!
posted 06-28-2002 08:25 AM ET (US)
Thanks to both of you for your feedback. My kids are looking forward to a "new" small boat for skiing/tubing - one that has only minimal mahogany to stay up on.
If the motor checks out, the next step is working with a few different props to come up with a couple for specific applications. I have a fair idea of how I may want to go and there seems to be plenty of discussion here on this particular hull-power combo to get me there a little quicker.
posted 06-28-2002 03:29 PM ET (US)
Are there any advantages to the 60hp version of older OMC 3 cylinder motors? I assume the 60 is identical to the 70, same displacement, except altered to produce lower hp.
I have heard that these detuned versions have better low end torque and better longevity/reliability over the higher hp configuration.
Does anyone know if this is true?
posted 06-28-2002 04:32 PM ET (US)
If you are buying from dealer, insure that service bulletin 2276R1 dated april 1994 has been done. Compression number on 2 cylinder should be same as 1 and 3 , if not the same cylinder head should be removed for inspection of cylinder, or bore scope. Engine has history of cooking middle cylinder. Engine checks ok, prop on high side rpm range.
posted 06-28-2002 05:10 PM ET (US)
Thanks for the heads-up on that, Clanton.
Any comments on hull performance at higher RPMs/speed with that 70hp. I'd expect it to get a little twitchy...but may be not. Just curious.
Speed isn't the main issue with me, but I like knowing it's there if needed.
|Tom W Clark||
posted 06-30-2002 04:06 AM ET (US)
That 70 hp Evinrude may well be the most popular outboard of all time. It certainly is one of the most reliable. I've owned two of them including one on my 15' Whaler.
Your boat will be fast and it will seem even faster because you are so low to the water. It should easily do 45 mph. Yes, it can be a little squirrely at WOT. The 15' Whaler is the one Whaler I have owned that I would not consider overpowering. Iím actually surprised it has a 70 hp rating. The first year it was introduced, 1975, it had a 75 hp rating!
posted 07-03-2002 12:46 PM ET (US)
I concur with Tom. A 70Hp OMC with a 19" or higher prop will push the boat between 45 and 50mph, depending on the weight of the contents. At this speed, it is chine walking, and very light feeling on glassy water. You'll only ever open it all the way up on glassy water, and usually only when you're in the mood for an adrenaline rush. However, the 70hp will run an average of 5mpg if you keep it around 25mph. Cheap entertainment for the kids: Ski for a half day on 6 gallons of gas!
Save some deck space: block off the VRO oil inlet on the engine, and pre-mix the oil with the gas. My '85 70Hp Johnson still propels my '85 15' Sport to 50mph, when I can find a glassy lake to open it up on... The ICW has a 25-30mph speed limit, and hte ocean is NEVER that flat.
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