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Repowering a 13
fullcourse	#1  Posted on 09/15/08 - 4:26 PM
Member Posts: 12 Comments: 0 Joined: 09/15/08	Just bought an '87 13 with an older 25 hp Johnson that I want to repower. Boat sits great in the water. Not heavy. What do you guys thinks about a Mercury 40 hp ELPTO. Will that work? Thanks. Looking forward to fixing up this classic!
John Fyke	#2  Posted on 09/15/08 - 4:27 PM
Member Personal Page Posts: 1307 Comments: 0 Joined: 09/06/06	Go for it. John Fyke Re-Fit or Reef It 1979 15' Sport with Super Sport conversion and 70hp mercury.
Binkie	#3  Posted on 09/15/08 - 5:39 PM
Member Personal Page Posts: 2012 Comments: 0 Joined: 12/19/05	Plenty of power, but quite a bit heavier that the old 25. You will probably have to redistribute weight, battery and fuel forward, to get it to run smooth, without porpoising. rich Rich
fullcourse	#4  Posted on 09/16/08 - 5:59 AM
Member Posts: 12 Comments: 0 Joined: 09/15/08	Thanks Rich, Thats is why I'm thinking I better stay with a two stroke rather than a heavier 4 stroke. Trying to check the weight of the replacement motor.
rbattle	#5  Posted on 09/16/08 - 8:53 AM
Member Posts: 8 Comments: 0 Joined: 07/23/08	Check out the Yamaha 40 4-stroke. It is quite a bit lighter than the other 4-strokes. If I had the money to repower my 13, that is exactly what I would put on it.
Binkie	#6  Posted on 09/16/08 - 4:33 PM
Member Personal Page Posts: 2012 Comments: 0 Joined: 12/19/05	Just repowered my 13 with an `08 25 Merc (Tohatsu) EFI 4 stroke, It weighs 157 lbs. Also about a 35 lb. Stern mounted Electric trolling motor. Only 3 hours so far, but 3 hours no wake in a river with 2 people on board is not much of a test. rich Rich
ioptfm	#7  Posted on 09/16/08 - 5:39 PM
Member Personal Page Posts: 1533 Comments: 3 Joined: 10/28/06	Follow this link and it may help you some http://www.whalercentral.com/articles...icle_id=78 Tom 1979 Sport 15'
CES	#8  Posted on 09/16/08 - 7:10 PM
Member Personal Page Photo Albums Project Albums Posts: 2681 Comments: 7 Joined: 04/27/07	Whatever motor you put on the back of that thing should be just fine.... Cliff 1966 13' Sport with a 1993 40hp Yamaha 2 Smoker
moose	#9  Posted on 09/16/08 - 8:28 PM
Member Personal Page Posts: 543 Comments: 1 Joined: 03/07/07	All of the new injected two stroke motors are great. I haven't heard of any trouble out of any of them and mine runs like a top and sips fuel and has plenty of power. Mike
fullcourse	#10  Posted on 09/17/08 - 6:47 AM
Member Posts: 12 Comments: 0 Joined: 09/15/08	Thanks ioptfm, thats exactly what I was looking for.
fullcourse	#11  Posted on 09/18/08 - 7:46 AM
Member Posts: 12 Comments: 0 Joined: 09/15/08	talking to my local dealer he is suggesting to put a 25 two stroke. less weight. enough power. any thoughts on the 25 ? keeping in mind that I want my kids to use the boat is a 40hp over kill? thanks
CES	#12  Posted on 09/18/08 - 7:49 AM
Member Personal Page Photo Albums Project Albums Posts: 2681 Comments: 7 Joined: 04/27/07	A 40 isn't over kill, even with the kids. A 13 with a 40 on it will run between 30-35 mph. When the kids get older, you'll want to pull them around behind the whaler too and a 25 just isn't enough to do that with. My Whaler has a 40 on it and I an training my kids to be careful with it..... If you can, get the 40....you won't be sorry. Cliff 1966 13' Sport with a 1993 40hp Yamaha 2 Smoker
ioptfm	#13  Posted on 09/18/08 - 8:11 AM
Member Personal Page Posts: 1533 Comments: 3 Joined: 10/28/06	I would definately go with the 40 if it were me. The 25 will probably were great for you now, but CES says, when the kides get older, and heavier, you will need more. Very little difference in weight and probably not a gigantic difference in cost to purchase or operate. Tom 1979 Sport 15'
fullcourse	#14  Posted on 09/19/08 - 3:35 PM
Member Posts: 12 Comments: 0 Joined: 09/15/08	ok, not sure about the merc 2 stroke i was considering. now thinking about a new merc 40 4 stroke but reading other posts about porpoising has me wondering.. anyone running a 13 with 40 merc four stroker? thanks again.