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Author Topic:   60HP on 13'
CAWhalrDude posted 11-17-2003 01:03 AM ET (US)   Profile for CAWhalrDude   Send Email to CAWhalrDude  
Will a 60hp merc sink my 13" Whaler, or will it operate ok as long as I stay away from full throttle? It is possible I could inherit this motor.
Over the LINE posted 11-17-2003 11:18 AM ET (US)     Profile for Over the LINE  Send Email to Over the LINE     
"Born Free", if he still lurks around here, had a 60hp OMC. He is repowering with a 50hp Yamaha. It worked, but it was too much motor. Take that 60 Merc and trade it at a motor shop for something more appropriate.

Good Luck

Bigshot posted 11-17-2003 11:50 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Run it!
Over the LINE posted 11-17-2003 12:38 PM ET (US)     Profile for Over the LINE  Send Email to Over the LINE     
By the way, the 60hp came on the boat and the only reason he is repowering is because the engine died.
arnereil posted 11-18-2003 10:09 AM ET (US)     Profile for arnereil  Send Email to arnereil     
Sounds like a motor with a boat mounted on it.

Don't have to use all the power, but weight would concern me.

Bigshot posted 11-18-2003 01:23 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
The 2cyl 60's weigh the same as a 40. The 3cyl Merc is about the same I believe.
Whalerologist posted 11-18-2003 04:46 PM ET (US)     Profile for Whalerologist  Send Email to Whalerologist     
Agreed Big shot, run the heck out of it!!!

I have a 50 HP on my 1987 and its a runner. The 60 can only be 10-20 LBS more and I know a 70 that I looked at was only 30 plbs more than the 50 that I have. With a 60, it'll be a 50 MPH boat, maybe beat you to death at that speed, but it'll run


JBCornwell posted 11-18-2003 05:48 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Not a good idea.

That is 50% over the designed safe torque load on the transom. Engine weight is not the issue.

Think of a Montauk with 150hp, An Outrage 18 with 225hp.

If you think you would never go WOT you are dreaming.

Red sky at night. . .

WHALER27CC posted 11-18-2003 05:58 PM ET (US)     Profile for WHALER27CC  Send Email to WHALER27CC     
I agree with JB. The issue is definately the ability of the transom to handle the added torque of the increased HP, whether you hit full WOT or not.I Think if you are going to use the inherited motor,I would VERY careful of pushing that throttle too close to WOT,OR,you may find how expensive damage to that transom will get.Others here may disagree,but in the end its your call.Good luck,keep us posted.
Tom W Clark posted 11-18-2003 06:11 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
The issue is NOT whether the transom can handle the weight or torque, it can...easily. I think the question is "is 60 hp too much power to be handled by the operator of such a small boat safely?"

I would not put that much power on a 13. I've owned the Sport 13 and run others. The last time I spent any time with a 13 Sport was last summer. The boat had a 25 hp Mercury and it ran great. I (at my advanced age) really wouldn't want any more power than that.

I have seen many overpowered 13s over the years. I saw one this August at Rosario Resort on Orcas Island, WA with a 1977 Johnson Stinger. That was OMC's high performance version of their tried and true three cylinder motor. The Stinger produced 75hp.

CAWhalrDude posted 11-19-2003 12:18 AM ET (US)     Profile for CAWhalrDude  Send Email to CAWhalrDude     
Thanks for all the great input. My brother inlaw says he would trade me some of the antiques in the estate and some $$ for the motor. This of course makes my wife very happy, but part of me still would like to mount that motor and see what kind of insane adrenalin rush it could provide. The smart thing of course would be to take the $$ and upgrade my 25hp to a 40hp and keep the wifey pleased at the same time, but, the way, if I sound cold, my uncle was a real SOB, too bad that his estate was the nicest thing he ever did for anyone...
Island Bwoy 420 posted 11-25-2003 11:39 PM ET (US)     Profile for Island Bwoy 420  Send Email to Island Bwoy 420     
Dude I run a 48 SPL Evinrude 93' I love the engine and the manual powerlift makes is even faster. My 13' being a center console whaler makes the ride much easier standing up or sitting on a cooler. I run about 44 and I am not propped right. I have a picture with a 3 cyl OMC 70 on a 13 with a jackplate (email me if anyone wants it) and the owner said it wasnt horribly dangerous. I love the power I have and would recommend it for skiing, hauling camping gear or heavy loads and lots of people to the drinking spot. If I were you I would get a CMC manual powerlift and mount it on the 13 and see what happens. Is it a 2 or 3 cyl? The 2 cyl weights between 180-200 depending on power T/T or not and I think the 3 cyl weight 225-240 range. Im sure the transom could hold it but its the question of the operators skill level and boating expierence at high speeds. I would say go for it and if its too much for you take off the engine, leave the jack plate on, sell the 60 for a 50 and make sure its a 2 cyl. I think they made 2 cyl 60 omc's from 1980 to 1984. If you can find one of those in decent shape go with that. All 2cyls are the same block and mostly the same weight. Good luck email me and let me know what you do.



Toad2001 posted 11-26-2003 12:25 AM ET (US)     Profile for Toad2001  Send Email to Toad2001     
I saw an 89' vintage 13 GLS with a new 60 horse Merc 4 stroke on it in the summer. I was envious.

My 15 version has a 2 stroke 40...

whalerdude posted 11-30-2003 10:48 PM ET (US)     Profile for whalerdude  Send Email to whalerdude     
Hey Dude.

I had a 13 short shaft with a 50 merc.

It was a great boat but I kept the weight down because the engine was a manual start and I did not have a battery on the boat. I also weighed 160 lbs at the time.

The guy I sold it to weighed in at about 260 lbs. He added electric start and a battery and soon flipped it while taking a shapr turn on lake michigan.

If you do not weigh alot and your 13 is a 20" transom it may work. Just watch it in the turns.


Buckda posted 12-02-2003 03:37 PM ET (US)     Profile for Buckda  Send Email to Buckda     
JB -

LHG's 18 Outrage has twin 115's - 230 HP and it is a fine vessel that rarely utilizes the maximum speed potential on the boat. Remember, he'll only be torquing that transom if he uses maximum horsepower..otherwise, he'll be within reason...and the engine will probably last a lot longer because it will rarely see WOT.

I'd be more worried about liability if anyone else drives, or my insurance dropping me because of it.

Be sure to check out all angles...but I think it is doable if you want to...and it will probably save you the expense of a new or used engine as a replacement, though the advice to trade it in for a lower HP model is also sound (which is what I'd do)...

Bigshot posted 12-02-2003 03:57 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Actually wht "I" would do is buy a 15' with a 40 and swp engines, sell the 13' and keep the 15' with the 60.

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