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Author Topic:   13-footer: Best Motor
Richard Cranium posted 02-09-2012 04:58 PM ET (US)   Profile for Richard Cranium   Send Email to Richard Cranium  
I just recently purchased a 1974 13 SPORT and want to power it. My 1984 35 Evinrude is long shaft, rope start, runs perfect, weighs about 115-lbs. My 1996 Evinrude 48 has power tilt from a Mariner that I adapted to it because the factory tilt is just too expensive, and also runs great, weighs about 190-lbs. My 1973 Mercury classic 50 no tilt, weighs about 170-lbs. The 13-footer is going to be used fifty-percent running around on the river playing, forty-percent fishing in lakes and the river, ten-percent dragging kids around on tubes and hopefully skiing, and possibly trips once a year to Florida for fishing.

[Advantages] for the 48: tilt, power for skiing, newer, easy to work on, best corrosion protection. For the 35: LIGHT WEIGHT, starts first pull, better fuel mileage, don't need a battery, can take off boat easily to store inside in winter. [If] the 13 will self bail with the 35 on the stern it would be a big plus. Plus for Mercury 50: smooth runner, lighter than the 48, can't help it, it looks beautiful, much more complex to work on, but I enjoy tinkering so not a big negative there.

Will the [190-lbs] weight of the 48 make [the 13-footer] handle poorly? Will I be able to pull a skier with the 35? Will the Mercury be way smoother than the others? What are the [advantages or disadvantages] of each motor on the 13? I'd mount all three and try them out, but I can't bring myself to drill all those holes in my virgin transom.

This is my first post here on what looks like a great [website]. I've read through most of the posts, and realize that "best motor" is somewhat like the Ford-Chevy debate. A little background on my quirky habits. About 5 years ago, on a whim, I bought a 2-HP Evinrude outboard at an auction for $70. Cleaned the carb, new points, and it runs like a dream! I was bitten by the old outboard bug! I live near Cincinnati, have a boat dock in the back yard that gives me easy access to the Ohio river, so I'm on the water a lot. The neat thing about my area is the boating season is relatively short, and the fishing stinks, so you can find old outboards with low hours and no salt exposure real cheap.

Right now I have a Mercury 115, 50, and 4. Evinrude 2, 15, 25, 35, 40, 48, and 70. (As you can see, I'm SICK!) Wow! Sorry for the crazy long post, looking forward to your input--Thanks

Russ 13 posted 02-09-2012 06:50 PM ET (US)     Profile for Russ 13  Send Email to Russ 13     
Having owned a 13' that I bought with a Johnson 48 on it.
That engine works very well on the 13'.
IF it sits too low in the stern, relocate the battery under the console, and the fuel under the seat.
This will help the boat to run with less stern squat &
empty the stern for climbing in & out when pulling water toys. The PT&T is a HUGE plus for everything you want to do with the boat. Your "self-bailing" problem can be an easy fix, just add a small bilge pump, with internal float
switch. Mount it in the small bilge area & run the hose out over the transom.
whalercop posted 02-09-2012 07:51 PM ET (US)     Profile for whalercop  Send Email to whalercop     
We had two 70's model mercs on our sourpuss when I was growing up. First we had a 40 hp which I imagine was a 74 because the boat was, I know the motor housing had 402 on it. This was a very fast and strong motor, but eventually locked up for some reason. It was replaced with another 70's model 50 hp merc that would just plain fly. It was the perfect match for our sourpuss I felt, because it could pull any skier that was in our family. If it was me, I would put the merc 50 on it. I sure wish I still had that boat today.
anthonylisske posted 02-09-2012 08:27 PM ET (US)     Profile for anthonylisske  Send Email to anthonylisske     
I had a 13 with a 35 evinrude on it when I was a kid. Pulled me up water skiing with 3 buddies in the boat. But, could not pull up my 250lb pop when me and my brother were in the boat. So the question is, "are you planning on skiing?" If not, I would go with 35. But it is real nice not to be limited. In any case, best of luck
Peter posted 02-09-2012 08:58 PM ET (US)     Profile for Peter  Send Email to Peter     
Most definitely, the 1984 Evinrude 35.
Tohsgib posted 02-09-2012 09:10 PM ET (US)     Profile for Tohsgib  Send Email to Tohsgib     
If you DON'T need PTnT then stick with the 35. When you ski or ?? you set it at a certain hole and let it ride. Going home you move it up one hole for speed. For me I need PTnT due to the shallows in Tampa Bay so I would go with something like that.

NOW....I own a 1981 13 with a 2004 Suzuki 40hp 4 stroke weighing 240+ and I really don't have anything bad to say about it except she IS stern heavy...does not screw up the ride however. I would like a lighter engine but I do NOT regret my decision.

Binkster posted 02-09-2012 09:19 PM ET (US)     Profile for Binkster  Send Email to Binkster     
When the 13 footer was designed in 1956(not first produced). The 35hp OMC was the outboard that is was designed around. Your Evinrude 35 is the modern version of the old OMC Big Twin. That is the motor that best suits the boat. Modern 4 strokes in that same hp range are too heavy in my opinion, and I own one.

BTW, do you want to trade your 115 Merc. for my '61 Evinrude Starflite 75hp V4. Its a perfect running motor but I need more hp on my Sea Fury. Here is a pic. of it.
http://i27.photobucket.com/albums/c191/floridaboy2053/ boat%20restorations/fintailboat6.jpg

rich

AZdave posted 02-09-2012 10:25 PM ET (US)     Profile for AZdave  Send Email to AZdave     
I had a newer Yamaha 30 without power tilt. It would probably compare to the Evinrude 35 in power. It flew with one in the boat, planed out fine with the family aboard, and was perfect for whipping tubes around the outside of the loop. However, it would not plane a heavy skier with two in the boat (required in AZ). It really was not that much fun to go back and tilt the motor. It's great that you have so many choices. Great handle. Dave
Richard Cranium posted 02-09-2012 11:49 PM ET (US)     Profile for Richard Cranium  Send Email to Richard Cranium     
Wow. Thanks for all the input. Interesting, one vote for the Mercury 50, one for the 48, three for the 35. I'll admit, I'm torn between the three motors. I like aspects of all three. Since the 35 is a clamp on motor, I'll try it out first, but my son really wants me to put the 48 on it. He wants to ski behind it. I would mostly use it for fishing, puttering around, and the simplicity of the 35 Evinrude is really appealing to me. Just can't decide but the 35 seems to be the favorite at this point.

Binkster, I don't need the Starflite, but do you have any [13-foot Boston Whaler boat] parts? I need rails, bimini top, seat cushions; what do you have? I don't have a boat to put the 115 on right now, so I would let it go cheap. If you want to talk it over, my cell is 513-720-2423, names Rick. I also need parts for a 1960 glasspar G3, windshield and trim etc. I'll work with you, give me a call. Thanks for all the input so far, and keep it coming.

dg22 posted 02-10-2012 01:53 PM ET (US)     Profile for dg22  Send Email to dg22     
If the Mercury 50 had [power trim], it would be my first choice, but I agree the 35 would give you the best overall ride. I have a 50 Evinrude on my 13 but no [power trim] and it works great for pulling the kids skiing, tubing, and with a spotter up front it balances out the boat nicely. For cruising by myself it doesn't handle all that greatly but since I normally have someone with me, it's not a big [concern]. With two or more people the boat handles greatly with the 50 on it. If you are leaning towards the 48, the PT should prevent the porpoising at lower speeds when by yourself and give you a better ride. This year, I'm going to try blocking up my motor an inch. I think it was Russ that posted about this earlier and how it improved the ride. I like the idea of putting the battery under the console, too, and I'm going to get a longer gas line so I can move my tank up further.
Tohsgib posted 02-10-2012 02:07 PM ET (US)     Profile for Tohsgib  Send Email to Tohsgib     
Sounds like the 48 is the best for your needs if skiing is a priority at some point That 40 is like a four-cycle in noise compared to that loudazz 35.
leadsled posted 02-10-2012 02:35 PM ET (US)     Profile for leadsled  Send Email to leadsled     
I have run a classic 50 Merc and a c.1984 35 Evinrude on my 13' Whaler. That 35 Evinrude was pretty fast for what it is and it only weighs about 115 to 120-lbs. The 50 Mercury was scary fast, near 40-MPH, but weighs about 170 to 175-lbs, which is the same as a 25 Tohatsu four-cycle. Unless you were going to be pulling a heavy skier I would try the 35. Look for a lower pitch prop and it might be all right.
Binkster posted 02-10-2012 10:11 PM ET (US)     Profile for Binkster  Send Email to Binkster     
Rick, as you like old outboards, you would enjoy our club, AOMCI Antique Outboard Motor club. It is an international club and with chapters in every state. They meet once a month usually on a different lake, run their boat, talk about outboards and have fun. Here is the link to the site.
http://www.aomci.org/

I will give you a call

Rich

Peter posted 02-11-2012 06:46 AM ET (US)     Profile for Peter  Send Email to Peter     
I used to slalom waterski behind my 13 Whaler with a 1977 Evinrude 35 which is substantially the same as the 1984 Evinrude 35. As long as the single ski skiier is skilled at starting on one ski, the 35 should have no problem pulling them up on the single ski. The trick is to reduce drag by tucking the body into the air void created by the ski cutting the water as you are being pulled up. The 35 had no problem pulling even with the "speed" prop which was a 10 x 13. At some point, Evinrude changed the gear ratio on the 32 cubic inch motor such that the 10 x 15 became the speed prop and the 10 x 13 became the power prop on the 13 Whaler.
Richard Cranium posted 02-11-2012 09:34 AM ET (US)     Profile for Richard Cranium  Send Email to Richard Cranium     
Thanks Pete for that info. I think my Evinrude has the newer gear ratio because it had a stainless 15 pitch prop on it when I purchased it. I know exactly what you mean when you talk about getting up on a slalom. I've used the same technique getting up behind an old jetski on a dare, dragged a long time, but if you wait for the speed to build, you can get up behind surprisingly little power!

I like the 35 because of its simplicity: no battery needed, and easy to work on. I don't like the prospect of drilling holes in my transom, and it is clamp-on. The 48 does seem more refined when running, and as Tohsgib said in an earlier post, definately quieter. I haven't had the Mercury 50 running yet, but I've heard they are real smooth. Guess I'm torn between simplicity and proper weight for the whaler, and putting as much power as I can on it.

Peter posted 02-11-2012 11:39 AM ET (US)     Profile for Peter  Send Email to Peter     
While the 35 is a clamp on, it does have two holes in the bracket to bolt thru the transom and its not a bad idea to bolt it to the transom. I saw an Evinrude 35 (not mine) slide off the transom of a Whaler 13 in a hard turn because one of the clamps was either loose or broke. That Whaler had the old cable and pulley steering system.
renoduckman posted 02-12-2012 02:19 PM ET (US)     Profile for renoduckman  Send Email to renoduckman     
My old [1972] 13-footer [was] repowered with a 1992 Johnson 40-HP. It was a tiller boat, and [I] had the concern about [the 1992 Johnson 40-HP] being too heavy, especially in the rear. [The 1992 Johnson 40-HP] worked fine and the weight of the engine was never a problem for me. I am not sure but that was a heavy motor, in the 190-lbs range. It was a 50-HP that was tuned down, [I] think. So what [I] am trying to say is that a motor in the 180 to 200-lbs range will work fine on [a 13-foot Boston Whaler boat].
Russ 13 posted 02-15-2012 08:13 PM ET (US)     Profile for Russ 13  Send Email to Russ 13     
Even with the clamps on the 35-HP, I would use the two bolt mounting holes. 35-HP is a lot to clamp. If you [drill the two mounting holes and] change your mind, you will >have two unique spaced holes to fill. [I recommend] the 50 Evinrude or Johnson; [they are] light, powerful, quiet, and the mounting holes are standard spacing. If you ever re-sell, the 48 or 50 is a more popular choice [especially with] the [power trim and tilt] option.
BQUICK posted 02-16-2012 10:42 AM ET (US)     Profile for BQUICK  Send Email to BQUICK     
I wouldn't call any of the OMC's quiet or smooth. My 33 and 40 (1968 and 1970) vibrated the side rails like a tuning fork. I've been in Whalers with 48 and 50's and they were nasty rough suckers compared to four-cylinder 50 Mercury. Yamaha 40 is a nice motor and a PRO-V 50 is even nicer. A bit quieter and smoother than the OMC's.
L H G posted 02-16-2012 02:53 PM ET (US)     Profile for L H G    
Put the classic Mercury 50 on it, It's by far the best engine of your three, smoothest, most powerful, and best top speed. I ran a classic 13 for two years with one of these four-cylinder 50's, and it was great. It would walk away from any OMC 40 on the water easily. You can see a photo of my old 13 rigged with a 1970 Mercury 50 here:

http://continuouswave.com/whaler/reference/13/testimonials.html

Incidentally, I just saw a 1990 13 Supersport being re-rigged with a brand new 3 cylinder Mercury 40 EFI four-cycle. It looked really nice, and only weighs 217-lbs according to the dealer. An old Johnson 30 had come off the boat.

jimh posted 02-17-2012 07:36 AM ET (US)     Profile for jimh  Send Email to jimh     
I had a 1976 Mercury 500, a four-cylinder in-line two-cycle rated 50-HP at the power head. It was a very smooth motor. On my 15-footer I had remote steering and controls. It would be a lot of power on a 13-footer
bullet posted 02-18-2012 12:02 PM ET (US)     Profile for bullet  Send Email to bullet     
Use the 50HP.It will make you smile.
goldstem posted 02-20-2012 12:19 PM ET (US)     Profile for goldstem  Send Email to goldstem     
our 13 came with a merc 4cyl 50 (I think ours was a '40' actually, 1992. Never really liked it to be honest. 180 pounds I think is a lot on the back of 13, especially since I way more than that too. I replaced it with an '84 johnson 35 (really a 30) which weighs about 120, and I have been much happier. yes the merc was smoother and a little faster, but the lighter johnson just make for a far better day for us. plenty of power to take the kids tubing and skiing, and still too fast when the seas kick up!
Peter posted 02-20-2012 01:37 PM ET (US)     Profile for Peter  Send Email to Peter     
Yup, the 2 cylinder Johnson/Evinrude 30/35 at about 120 lbs was the perfect motor for the classic 13 foot Whaler. With a production run spanning about 30 years, a lot of them found their way as repowers on classic 13 footers. OMC made a military version of that motor that I recollect was submersible. It packed a good punch for its size.
BQUICK posted 02-21-2012 10:05 AM ET (US)     Profile for BQUICK  Send Email to BQUICK     
If you go manual start 50 Merc it's only around 150 lbs.
Very easy to start manually being 4 cylinders vs the knuckle busting 2 cylinders. My son when he was like 6 yrs old started it (warm engine) (using 2 hands) and the yacht club steward couldn't believe it.
Owtrayj25 posted 02-24-2012 04:08 PM ET (US)     Profile for Owtrayj25  Send Email to Owtrayj25     
"Richard Cranium"....lol...are you still in high school?
Richard Cranium posted 02-26-2012 09:17 PM ET (US)     Profile for Richard Cranium  Send Email to Richard Cranium     
OwtrayJ25, not still in high school, I'm 55. Was an old nickname my boss sometimes called me. All in good fun.

Just thought I'd check back with an update. Took the whaler out today with the 35 mounted on it 3/4 inch high. I made a spacer out of nylon. With my son and I in the boat, top speed was 35 on gps with the pin one hole down from the top. Thats 1 mph faster than the 1974 johnson 40 that came on the boat originally. I'm real happy!

I don't know how to post picts here, but the whaler floats real high with the 35 on the back, the drain tube was about 1/2 inch above the water at rest, should self bail well. with me in the boat, sitting on the rear seat, it was about 1/2 submerged according to my son. with me on the second seat it was out of the water completely, wish I could post picts.

I'll have to admit, I'd love to try a 50 on the back, but this motor just seems so perfect for the boat, I think I'm drilling the holes and mounting it permanently. The only negatives I can see are no power tilt, and as Tohsgib said, it is loud at full throttle. But it just seems right for the boat.

If this was a super sport, I'd definitely go with the 48 and power tilt, wouldn't want to jump over the seat back to raise the motor but with the sport, I don't mind and I love getting rid of the battery and all the wiring- frees up space in the rear for fishing gear!

Just wanted to thank everyone for the helpful comments, and if you want to know anything else I can shed light on, let me know.

Peter posted 02-26-2012 09:34 PM ET (US)     Profile for Peter  Send Email to Peter     
Oh that brings back memories -- one pin hole down from the top is exactly where I used to run mine and my 35 was faster than the 1960-1970s 40s (back in the days when I cared how fast things went).

I used to leave mine at the mooring with the plug out. About as care free a motor as there is. The only thing I would do is pull the fuel hose and run the gas out of the carb before I put it away for the day.

dg22 posted 02-27-2012 11:34 AM ET (US)     Profile for dg22  Send Email to dg22     
35 mph is a good top speed with no power-trim.
Richard Cranium posted 02-28-2012 07:01 AM ET (US)     Profile for Richard Cranium  Send Email to Richard Cranium     
Dg22 I was actually surprised by the speed. Conditions were perfect, nice riffle on the water, air temp maybe 45, I expect a few miles slower in the hot summer months around here.

Most running speed for me will be 3/4 throttle or less just knocking around, but I just can't help myself, once in a while I still find myself opening it up to see what she can do! The kid in me coming out I guess.

I remember whalers at the lake when I was a kid, (Wawasee in In.), and I was always amazed by the room and the high hp on such a little boat. I always dreamed of owning one, sure has been fun so far!

Jefecinco posted 02-28-2012 09:45 AM ET (US)     Profile for Jefecinco  Send Email to Jefecinco     
I'm pleased someone was brave enough to clear up the handle question. I didn't have the guts to ask believing it was just possible the name was genuine and not wanting to risk being offensive.

I was often referred to by a less polite version throughout my Army career.

Butch

Rohebo posted 03-01-2012 02:09 PM ET (US)     Profile for Rohebo  Send Email to Rohebo     
Great discussion, and timely as I'm considering a 13' that (likely) needs an engine. Does anyone know the "newest" year for this style 35hp Evinrude/Johnson?
Binkster posted 03-01-2012 09:15 PM ET (US)     Profile for Binkster  Send Email to Binkster     
2005
Theron1033 posted 03-02-2012 09:47 PM ET (US)     Profile for Theron1033  Send Email to Theron1033     
as far as weight goes for a 13' whaler 220lbs is the absolute maximum for these boats. 190lbs is a tolerable weight but it will feel heavy in the stern, the 48hp will push it with amazing speed. but take the plug and and the water will flood into the boat and stop at approximately 1/3 length of the hull, not very nice when you have electronics laying around, but it will still self bail it's self.--- i personally have a 30hp yamaha 2 stroke on my whaler and at 120Lbs she rides HIGH! lots of power, practically no water in the hull when the plug is removed, tops out at about 35mph, gets about 3-4 miles per gallon, gets on plane with 5 adults! does struggle a bit to tow wake boards/skis but it still does.--- -- as for the 50hp this would be my personal choice of power, the 50hp will push your boat at incredible speeds! and at only 170lbs will be fairly light on a 13' whaler only downfall is no power tilt witch will be a humbug. especially for a outboard that weights 170Lbs!
Tohsgib posted 03-03-2012 03:38 AM ET (US)     Profile for Tohsgib  Send Email to Tohsgib     
What should I do then if 220 is max?

Seems to run fine at 250lbs... http://img.photobucket.com/albums/v225/BiggieFL/1981-13Whaler/ nicks20boat20003.jpg

Richard Cranium posted 07-30-2012 09:48 PM ET (US)     Profile for Richard Cranium  Send Email to Richard Cranium     
Thought I'd post an update on my 13 whaler performance. I fished a fair amount in the spring with the manual start 35 evinrude, and I'll be honest, I got tired of pull starting the motor. It fired off first pull every time but as I get older, I guess I get lazier.
I found a 1993 evinrude electric start with real low hours and just had to make the swap. Sold the 35 evinrude and made a little on the deal, I was surprised by how much quieter the 30 was compared to the 35.
As I expected, the air temp has affected top speed. The air temp was about 90-95 and way humid, top speed with a new aluminum prop was 31 mph, with the stainless prop, I only gained 1 mph, to 32 mph. Still real happy with this motor, but I have a line on a 1984 mercury 50 with tilt and trim. If I get that, I will just have to try it!
Been having a great time running on the Ohio river with the boat, what a wonderful design! Handles great, light, unbelievably stable, and roomy for a 13 ft boat! I believe this boat will be passed on to my children.
If I get the merc, I'll let you know how it performs and what I think.

Binkster posted 07-31-2012 06:42 AM ET (US)     Profile for Binkster  Send Email to Binkster     
Have you looked into joining the AOMCI in your area? You can tow your 13 footer to the meets and meet others with old outboard interests. http://www.aomci.org/

rich

Peter posted 07-31-2012 01:25 PM ET (US)     Profile for Peter  Send Email to Peter     
By the late 1980s, early 1990, OMC was putting a silencer on the idle relief port on the motor shaft. That's probably why you notice it is quieter.
barnacle posted 08-05-2012 02:00 AM ET (US)     Profile for barnacle  Send Email to barnacle     
I have 3 whalers one a 13 a classic 50 Mercury is great till kids started using it. A jerk cop and a normal kid would break me. Got a 2 stroke 25 and now the grand kids will soon be hammering on it . Find a sport 17 and stick a 90 on it pull what you wantI u
PeteB88 posted 08-06-2012 10:16 AM ET (US)     Profile for PeteB88  Send Email to PeteB88     
I think my Yamaha 40 w/ tilt, Precision Blend system (1994 model) is pretty sweet for 13s - they are relatively light weight and goes like a freaking rocket. Bottom line - there is such a thing as too much pwr for 13s if you're not careful.

pcrussell50 posted 08-06-2012 02:22 PM ET (US)     Profile for pcrussell50  Send Email to pcrussell50     
Hah! Pete! Not only do you have the best outboard motor ever made, (v4 crossflow), but you have what might be the second best on your 13. I have a Precision Blend Yamaha 40 on my 13 too. Goes like stink, tight and precise like a Swiss watch. It's a carbureted 2-stroke, but anyone who thinks it smokes too much or is too loud needs to get a life. This thing is like a modern jewel.

Only difference with mine is mine does NOT have power tilt and trim--that gave me pause when I was shopping for a 13. But in the end, I don't miss it a bit. Manually tilting it is easy as pie. Two fingers to tilt it, move the pin to the hole you want and you're done--but I don't even bother with that anymore either. I haven't changed the tilt pin angle in two years. The motor has so much power that I just leave the motor trimmed for cruising speed and don't even bother tilting it down to get on plane. A quick goose of the throttle and it's up on plane anyway no matter what situation the trim is in.

-Peter

PeteB88 posted 08-07-2012 10:30 AM ET (US)     Profile for PeteB88  Send Email to PeteB88     
I'll tell you one thing about that Yamaha - I love to fish top waters or floaters/streamers for bass in shallow water. I have run that rig for years through gunk, mud, muck, weeds, sand dozens of times and, in fact, use the power tilt to "anchor" that 13 in the muck and have NEVER had one issue with plugging up or overheating ever. I've got an impeller kit in my garage I bought a few years ago that should get installed.

Bad Habits? Probably. I'd never do that with the 115 which seems hypersensitive to such conditions. That Yamaha is just awesome and I wonder if they are all that good.

Thanks!!

I would like to get into the carbs on the Yamaha and not sure how difficult that is.

Richard Cranium posted 11-20-2012 06:25 AM ET (US)     Profile for Richard Cranium  Send Email to Richard Cranium     
More 13 Whaler engine information: I found a 1993 Tohatsu M50D [i.e., 50-HP], manual tilt, electric start, oil injected. Compared to the 30 Evinrude, it's heavy. It seemed way heavy, but dry weight was supposed to be 158-lbs. Seemed like more, so I grabbed the bathroom scale and weighed it. 169-lbs as pulled from my boat. I then weighed the Evinrude 30, 130-lbs. So for 39-lbs more I gain 20-HP. I had to try it!

First off, I love my Evinrude. Figured like Peter, it is perfect for the 13. The negatives with the Tohatsu: the extra 39 pounds on the transome definitely makes a difference. With the Tohatsu on the back, the boat will porpoise if I leave a full tank of gas and battery in the rear at cruise speed. It sits lower in the water. At full speed, the handling gets a little squirrelly, the bow wants to dig in, just pushing the hull faster than it was designed to go I think. I don't think the Tohatsu looks as nice as the Evinrude on the boat, a little to big, maybe I'm just used to the Evinrude and it will grow on me.

The good points for the Tohatsu: three-cylinder, much smoother than the Evinrude. No oil-fuel pre-mixing. I can't tell you how nice this is, I never need to bring a jug of oil and measuring cup with me again! Quiet! The Tohatsu runs MUCH quieter at all speeds than the Evinrude. Of course, performance. If I were running the boat with just a kid, or just myself alone, I'd keep the Evinrude. But loaded down with fishing gear, coolers, my fishing buddy and myself, it really slows down as you would expect. Wide open we run about 25-MPH, an acceptable speed, but I won't cruise wide open, I just can't believe it's good for any motor to do that long term. So cruise ends up being 20 to 22-MPH with the Evinrude. With the Tohatsu, load makes MUCH less of a difference. I can easily cruise at 30-MPH fully loaded. Best speed with just me was 37-MPH, but the bow starts to dig at that speed, doesn't feel safe at that speed. At first, I was going to put the Evinrude back on, but for now, the Tohatsu stays. Smooth, no oil mixing, powerful. Makes up for the weight.

I know 50-HP is over the power rating for the boat, and I've read threads where people have said 50-HP on a 13 is irresponsible, even criminal. Others say 50-HP is just right, because of the great versatility of this wonderful hull design, I think. If I were powering it for kids to run around or for fishing alone, the Evinrude 25 to 30-HP would win a spot on the transom, no question. But people do more with these boats. Is it a great ski boat? Of course not, but with a 50-HP on the transom, it will get me out of the water on a slalom. Was it designed to ski behind? No, but who cares, it's still doable and fun! For the heavy loads I run with, the 50-HP works better for MY usage. I'll be honest--I'm going to miss the perfect balance and static trim that comes with the Evinrude, but the refinements and power of the Tohatsu win for me in the end.

And people who say they are getting 40, 45, 50-MPH with a 50 hp motor, maybe set up perfectly, high trim angles, working to get on plane, fighting porpoise and bow digging in, you could do it. But if you want to just bolt on the motor, set the trim pin and go, I don't think so. I get 37-MPH, like I said earlier. The high speed stuff isn't for me. But I can see why some would do it, just to see what speeds they can squeeze out of the boat. I do believe the differences of opinion on the best motor for the 13 arise because of the versatility of this design and the varied uses owners have for their boats.

So in the end, for now, the Tohatsu stays. It works best for MY uses. I'll probably sell my Evinrude in the spring. Hate to see her go.

dg22 posted 11-21-2012 03:09 PM ET (US)     Profile for dg22  Send Email to dg22     
I agree, the nice thing about having the extra horsepower is you can cruise at a nice speed with a few people on board and you don't need to have it wide open. As a result, I find the fuel ecomony great for a 50hp. The Tohatsu is a strong motor. They use that same powerhead for D Stock hydroplane racing.
Binkster posted 11-23-2012 12:12 PM ET (US)     Profile for Binkster  Send Email to Binkster     
Tohatsus are great outboards. I'd like to find a 50 or 70 two stroke Tohatsu for my 15 footer. My '08 Merc 25 4 stroke that powers my 13 footer is actually a Tohatsu with a Mercury cowling. The 50hp Tohatsu powerhead with a Sam Bass LU and gearcase is competitive in D Stock boat racing, as stated above, but the competition is still the 44cu, in. 4 cylinder Merc. designed and built over 50 years ago, and is still a winner.

rich

dg22 posted 11-23-2012 04:03 PM ET (US)     Profile for dg22  Send Email to dg22     
Yup, those old Mercs are fast. My D classic motor was a 1961 Merc 500 powerhead, 55H tower and 44XS foot. When I raced in 2006, there was a separate class for these motors, in Canada; due to the lack of D drivers, I think they now run the D Classic motors with the Merc 44XS and the Tohatsu/Bass motor. Kiekhaefer was way ahead of his time.

Sorry to get off topic. That 1973 Mercury Classic 50 would have also been a great choice for the 13 footer but like you said no pre-mixing with the Tohatsu.

jimh posted 11-23-2012 05:53 PM ET (US)     Profile for jimh  Send Email to jimh     
I used to have a 44-cubic-inch Mercury in-line four-cyclinder engine. It was a 1976 Mercury 500. It was a nice engine, and it ran quite smoothly. I don't think there is any 50-HP outboard engine made today with four-cylinders.
Peter posted 11-24-2012 07:17 AM ET (US)     Profile for Peter  Send Email to Peter     
The Yamaha F50 is a 50 HP 4-stroke with 4-cylinders. But that really isn't comparable to a 4-cylinder 2-stroke. It's firing frequency is no better than a 2-cylinder, 2-stroke. Clearly, not a good choice for a 13 foot classic Whaler.
Hilinercc posted 11-28-2012 10:22 AM ET (US)     Profile for Hilinercc  Send Email to Hilinercc     
First of all, let me say: God Bless You, Richard Cranium!, for flying the 2 stroke flag high, and not ashamed to do it.

I am one of the few here, who also have a soft spot for carbed 2 strokes, (1972 2 Johnson, 1973 25 Johnson, 1993 25 Evinrude and 1998 200 Oceanpro)

I had a 92 40 Johnson on my 13 and it was great, shortly before OMC dided, I replaced it with a 99 50 johnson, both were great.

But I have to agree with Larry, the Classic Merc 50 4 banger would be very cool. I grew up with a kid who had that sey up in an old short shaft, blue interior 13 and the thing was stupid fast (just what a teenager needs, right?) Anyway, that would be a killer rig. IMHO

skred posted 11-28-2012 11:04 AM ET (US)     Profile for skred  Send Email to skred     
My first Whaler was a 1988 13 Sport - came with a 30 Yamaha 2-stroke. I was able to pull my 170-lb. son-in-law with my wife and daughter in the boat along with my 210 lbs., and could still easily pull him on a slalom. Now, not at 35 mph, of course, but - respectably fast. I always believed in the greatest power/speed/fuel economy yield for the least hp/weight on the transom. I was eminently pleased with that 30 Yamaha...

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