Yamaha 150 4-stroke
 

I have been reading about repower options on this excellent forum and I have a question. Sorry to beat a dead horse, but, I am repowering a 1986 SeaCraft 20CC. I am leaving behind a tired but faithful 1986 150 hp Mercury Black Max. After much consideration on my priorities I settled on a Yamaha 150 hp 4 stroke. It is lighter than the HPDI, it's only 30 lbs heavier than most other 2-stroke DFI's, it's 15 lbs lighter than the Honda 4-stroke, and the 135 DFI's seem to be the same weight as the 150's. Without the oil reservoir, and if I move my battery from the stern to under the console I would think that the weight over the stern should not be dramatically different.

Re: Yamaha 150 4-stroke
 

I think you've made a good choice...I am in the same situation that you were and if i had the $$$ i would probably got with the Yamaha 4stroke 150.

Looking forward to hearing what you get out of it for numbers!

Re: Yamaha 150 4-stroke
 

What does your 1986 150 hp Mercury weigh? I plan (but am not ready to replace) my trusted 1986 Yammi 175 hp on the 1979 20 ft MA. The dillema of weight vs speed/power looms ahead, although I am willing to sacrifice speed and pray for economy with a much lower HP 4-stroke, DFI,...

Re: Yamaha 150 4-stroke
 

NADA.com says that the Mercury 1986 150hp motors weighed 375 lbs.

Re: Yamaha 150 4-stroke
 

Another consideration for me is noise. I fly fish in shallow water and I don't want the added line grabbing feature offered by electric trolling motors. I am hoping the 4-stroke will be nice and quiet.

Re: Yamaha 150 4-stroke
 

It'll be quiet, but not that quiet. While you have your wallet open you might want to get a set of Troll N Tabs.

http://members.cox.net/rhstg44/SeaCr...om%20after.JPG

Re: Yamaha 150 4-stroke
 

The Suzy DF140 is pretty quiet. The only noise is the pisser stream hitting the water! [img]/images/graemlins/grin.gif[/img]

Seriously, the only noises i hear at near idle is squeaks or rattles related to stuff in the boat.

This motor is a good option to save some $$ and weight, but lose a few pony's. I was seeing a 2K diff, not sure it is 2k better .... tough choice, but by the Yamaha so us and others can see some real #'s! [img]/images/graemlins/smile.gif[/img]

- Nick

Re: Yamaha 150 4-stroke
 

Roger, how do you like the troll-n-tabs? I've been considering them for a couple years now.

Re: Yamaha 150 4-stroke
 

I like them alot, though I don't have many hours of use on them, maybe just 25 on the trolling motors and 50 with the tabs. They are very neat and allow me to flyfish from the bow alone while keeping the boat in position.

Re: Yamaha 150 4-stroke
 

The Honda I've got was rated the most quiet of the 4s, yet I've spooked some pretty good bass in the shallows just idling up. Remember, the exhaust sound is pumped directly into the water.