13-footer Re-power with 40-HP Tohatsu 208-lbs

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Author Topic:   13-footer Re-power with 40-HP Tohatsu 208-lbs

WhalersRbest posted 12-19-2014 03:09 PM ET (US)
Hello. I've read a lot of threads on here and other Whaler forums concerning the best re-power option for a classic 13-footer. Are any readers using a newer Tohatsu 40-HP at 208-lbs on 1960's era 13-footer? How is it working out? Thank you in advance and thanks for such a great forum. I have learned a tremendous amount just reading through here. I'm well aware of the transom weight concerns and that is why I am asking.
Peter posted 12-19-2014 06:41 PM ET (US)
An outboard engine weight of 208-lbs is simply too heavy for the classic 13-footer and even more of a problem if that 1960s era still has the 15-inch transom. Ideal transom weight is 150-lbs or less.
WhalersRbest posted 12-19-2014 08:33 PM ET (US)
Yeah, the boat has a 15-inch transom, which is why I'm interested in the Tohatsu. I agree that 200-lbs is a bit heavy, but I have seen some pictures of that motor on a 1969 Boston Whaler boat, and the boat really did not seem to sit too low in the water. I've been looking for an older 35 to 40-HP engine in the 150-lbs range, but they are hard to find. I've had a 25-HP Evinrude on it since 1983, and I've always felt it needed a bit more. I know many people disagree with that, but that has been my experience. Thanks.
macfam posted 12-20-2014 07:05 AM ET (US)
Suzuki is now making a new 25 and 30 hp models starting at 137 pounds!!
Although our 30 E-TEC is a fabulous match for our 13 Super Sport, it weighs approx 175 lbs. I WOULD NOT want more weight than that on the back.
The speed difference between the 2000 Johnson 40 versus the 30 E-TEC at full throttle is about 2-3 mph.
We use full throttle about 5% of the time.
Teak Oil posted 12-20-2014 07:15 PM ET (US)
That Tohatsu is way too heavy, there are many other lighter options available
boatdryver posted 12-21-2014 09:24 AM ET (US)
Rbest, if the notched transom is limiting your search to 15 inch shaft motors, there is a device you can order to fill the transom and allow use of a 20 inch shaft motor. We did this to allow use of an Etec 25 hp motor on a notched transom 13 foot Whaler and it worked fine. [Said he would share this information privately--why not post it here publicly?--jimh]
JimL
boatdryver posted 12-21-2014 03:06 PM ET (US)
Here's the information on the transom adapter I mentioned in the previous post:
kentfabrications.com
The unit is called Transadaptor13
In installing one on our club 13foot whaler some grinding of the transom edges was required because the boat was in workboat condition and had had some fiberglass repairs done around the notch. The unit is quite substantial. Their website has a phone contact.
JimL
WhalersRbest posted 12-21-2014 04:14 PM ET (US)
boatdryver, thank you! I have seen a couple boats using that on my extensive internet search of 13 foot whalers but I thought they were homemade. I have been resistant to changing the transom height but that adapter looks really good. It will certainly make things a lot easier not being limited to a short shaft. I am probably going to get it. Thanks, I was getting really frustrated.

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Author	Topic: 13-footer Re-power with 40-HP Tohatsu 208-lbs
WhalersRbest	posted 12-19-2014 03:09 PM ET (US) Hello. I've read a lot of threads on here and other Whaler forums concerning the best re-power option for a classic 13-footer. Are any readers using a newer Tohatsu 40-HP at 208-lbs on 1960's era 13-footer? How is it working out? Thank you in advance and thanks for such a great forum. I have learned a tremendous amount just reading through here. I'm well aware of the transom weight concerns and that is why I am asking.
Peter	posted 12-19-2014 06:41 PM ET (US) An outboard engine weight of 208-lbs is simply too heavy for the classic 13-footer and even more of a problem if that 1960s era still has the 15-inch transom. Ideal transom weight is 150-lbs or less.
WhalersRbest	posted 12-19-2014 08:33 PM ET (US) Yeah, the boat has a 15-inch transom, which is why I'm interested in the Tohatsu. I agree that 200-lbs is a bit heavy, but I have seen some pictures of that motor on a 1969 Boston Whaler boat, and the boat really did not seem to sit too low in the water. I've been looking for an older 35 to 40-HP engine in the 150-lbs range, but they are hard to find. I've had a 25-HP Evinrude on it since 1983, and I've always felt it needed a bit more. I know many people disagree with that, but that has been my experience. Thanks.
macfam	posted 12-20-2014 07:05 AM ET (US) Suzuki is now making a new 25 and 30 hp models starting at 137 pounds!! Although our 30 E-TEC is a fabulous match for our 13 Super Sport, it weighs approx 175 lbs. I WOULD NOT want more weight than that on the back. The speed difference between the 2000 Johnson 40 versus the 30 E-TEC at full throttle is about 2-3 mph. We use full throttle about 5% of the time.
Teak Oil	posted 12-20-2014 07:15 PM ET (US) That Tohatsu is way too heavy, there are many other lighter options available
boatdryver	posted 12-21-2014 09:24 AM ET (US) Rbest, if the notched transom is limiting your search to 15 inch shaft motors, there is a device you can order to fill the transom and allow use of a 20 inch shaft motor. We did this to allow use of an Etec 25 hp motor on a notched transom 13 foot Whaler and it worked fine. [Said he would share this information privately--why not post it here publicly?--jimh] JimL
boatdryver	posted 12-21-2014 03:06 PM ET (US) Here's the information on the transom adapter I mentioned in the previous post: kentfabrications.com The unit is called Transadaptor13 In installing one on our club 13foot whaler some grinding of the transom edges was required because the boat was in workboat condition and had had some fiberglass repairs done around the notch. The unit is quite substantial. Their website has a phone contact. JimL
WhalersRbest	posted 12-21-2014 04:14 PM ET (US) boatdryver, thank you! I have seen a couple boats using that on my extensive internet search of 13 foot whalers but I thought they were homemade. I have been resistant to changing the transom height but that adapter looks really good. It will certainly make things a lot easier not being limited to a short shaft. I am probably going to get it. Thanks, I was getting really frustrated.