V6 yamaha 150 four stroke on 1987 196?

[redemn93]

so i might have an opportunity to get a 2005 yamaha F150 with controls, gauges, harness, etc etc pretty cheap...maybe...i may not have the funds.  ill know later today.  

anyway, i know its a good motor and was very well taken care of.  around 1300-1500 hours.  just fullt serviced, etc.  my boat is currently getting a new 25" transom (very wet and half rotten), piece of the floor being done too.  stringers are suprisingly pretty dry for the most part going to check flotation foam when the old transom is dug out, and fully awlgripped.  im need to replace all the steering components on my merc.  i have a whole new mid to install to make it all easier.  by have a hell of a time getting my power head off.  i had to drill the new mid to get its busted power head off.  trying not to do that with my good one cause i need to reuse the adapter plate and exhaust tuner from it.  so my neighbor sees me cussing and hammering, heating, PB blasting etc and walks over.  says he's getting ready to buy a new F200 to replace his 2005 F150 that he bought new as well.  offering to sell me his motor and all rigging for the trade in value, if they offer him a trade in.  

my boat already sits with the scuppers at the waterline with no one on board.  running a 1989 v6 merc 150 2 stroke.  from the info i've found it weighs around 380 lbs.  the F150 weighs in around 460-470.  how drastic of a difference is the 80-100 lbs?  with the wet transom being replaced i imagine that will save me probably 20-30 lbs by itself?  maybe more?  less?  it was wet to the point that drilling near the top, the wood wasnt just wet, it was watery watery.  so, how much lower will the back of the boat sit with a v6 4 stroke?  anyone here have a v6 four stroke hanging on the 196 or 20?  in water pics if so?

[gran398]

You can duplicate the additional weight back there with two and a half 5 gallon buckets of water.

[redemn93]

she is already derigged and half torn down.  wont be possible till its all back together.  i guess im just trying to find opinions and maybe find someone running the same or similar motor.

[wingtime]

I was going to say that Merc is just shy of 400 lbs but it looks like you know that.  I'm sure your boat will be lighter in the stern when you get rid of the wet stuff.  But 80 lbs?  Maybe. But as you know the problem is the floor height and the scupper height is low.  Lets face it these boats were designed  several decades before four stroke outboards were even thought of.   And when a 150 HP outboard as a BIG outboard.   Do you have ball scuppers or anything like that on your boat now?

[redemn93]

it will have ball scuppers.

and just to clarify i derigged for the paint and transom work.  i did not buy the yamaha yet if i even will.  i imagine ill loose 20-30 lbs (more?  i really have no idea) or so with the new transom.  so thats 60 lbs difference left.  i just dont know how much weight makes a difference.  where do you start noticing?

the boat will have TH marine ball scuppers.  even with the merc the scuppers were at the waterline with no one on the boat and below when i or more people are at the back.  i just kept them plugged except for offshore.  even then i rarely open them.

[gran398]

Jason, what will the new transom be cored with?

[wingtime]

The TH marine flow max ball scuppers are the only way to go.  I have had them on two boats and they work good.  A little bit of water will get past them but no much.  I was thinking the same thing as Scott about what core material you are planning on using.  Also are you going to dig into the stringer foam while your at it?  If that is wet you will save some more weight.

[redemn93]

the new transom will be wood.

i drilled 3" hole in each stringer to check for water and they were dry.  not water dripping out felt dry to the touch.  the holes were drilled about 1-1.5' forward of the transom.
 
once the transom is all ripped out im going to dig into the flotation foam on the sides to see how it is and the stringers at the very back.  im not pulling up the floor as its not needed.  

if this f150 seems like a bad idea then ill stick with what i have which is being a serious pain in my ass.  im almost at a loss for how to get the damn studs loose from my good powerhead/old mid (see my other thread) without having to drill and buy a new adapter plate.  then i have to finish getting the studs out of the new mid.  but itll be perfect when i finish it.

[wingtime]

With today fuel prices the fuel savings of the f150 is something you have to factor in.

[redemn93]

something that has been heavy on my mind.  but i dont know if the boat can handle the weight.  my scupper are already under when im in the back of the boat with the 2 stroke 150.  i guess it really doesnt matter anymore after that.  ill have to just decide if i want to spend more money that i dont have or not.

[wingtime]

Well if it proves to be too heavy I;m sure you can easily get your $$$$ back out of the Yammie.

[Capt Matt]

My guess is your scuppers will go down another inch,
Capt Matt

[wingtime]

You'll displace another cubic foot and a half or water if you add 96 lbs of weight.

[gran398]

With an open transom, take a good hard look at lower horsepower on your 19-6.  Skoot's 90 HP Tohatsu carried 850 pounds of guys, gas, beer, chicken and gear no problem. Heck...not even a struggle. Cruised at 29 like a champ.

[Mike 139]

Just an FYI......Take a GOOD look at that mid-section before you buy....Exhaust housings with corrosion issues.