Cheap bad idea

[Bigshrimpin]

Fish . . . I'm just trying to help you out. Back that boat down a ramp and add the weight on the transom in sandbags till you are at 450 - 475lbs . . . have 2 big guys stand in the stern. Just see if you can live with where the 20" transom is gonna sit . . . I know my 25" transom was barely acceptable on my MA with a 365lb Merc and a 100lb yamaha 8hp kicker, 25lb kicker bracket. I would feel real uncomfortable with 5" less transom with that setup. I have a bad feeling that you'll feel the same way. If you need a hand give me a shout . . . we boat in the same area.

[FishStretcher]

Fish . . . I'm just trying to help you out. Back that boat down a ramp and add the weight on the transom in sandbags till you are at 450 - 475lbs . . . have 2 big guys stand in the stern. Just see if you can live with where the 20" transom is gonna sit . . . I know my 25" transom was barely acceptable on my MA with a 365lb Merc and a 100lb yamaha 8hp kicker, 25lb kicker bracket. I would feel real uncomfortable with 5" less transom with that setup. I have a bad feeling that you'll feel the same way. If you need a hand give me a shout . . . we boat in the same area.

FWIW, I haven't had it in the water yet. It has a 410 lb 175hp Yamaha 2 stroke on it now. The kicker is 58lb on a light bracket. The F100 is supposedly 356lb or 366 depending where you read I think this is the lighter early USA spec with carbs, but I don't know.

My rationale is that Rich had this out as far as the Vineyard with that 410 lb Yamaha. I think at about the same weight, with batteries in the console and fuel tanks where the head is, that this might work until I bracket it. I want to try it before I bracket it. I already have a flotation bracket for it, although I am going to lighten it before I do that, it is made of 5086 aluminum, but I plant to take weight out where it doesn't need it.

That being said, I don't know how it sits at rest now. I really am not going to put a tower of power on it. Maybe someone can convince me to do an etec, but they don't seem to be lighter than at 90/100hp 4 stroke.

[McGillicuddy]

Hey, now my, old 2 stroke don't smoke...
I think you could do fine with the f100 but since you brought it up, the etec 90 is 335 lbs in the 25" shaft version. More balls than the f100 and better economy. But unless its new, you'll probably pay much less for that Yami 4s...

Good luck with your decision but take heed of Bigs words of wisdom. He knows motors and SeaCrafts and Buzzards Bay as well as anybody... I know he'd be bummed if he had to wind'em up on a hot striper bite to save your sinking hide

[FishStretcher]

Yeah, a used 4S Yamaha. Going to look at it tomorrow. I wonder what a running 1988 175 Yamaha is worth with controls and a SS prop. Probably $500...

Hey, now my, old 2 stroke don't smoke...
I think you could do fine with the f100 but since you brought it up, the etec 90 is 335 lbs in the 25" shaft version. More balls than the f100 and better economy. But unless its new, you'll probably pay much less for that Yami 4s...

Good luck with your decision but take heed of Bigs words of wisdom. He knows motors and SeaCrafts and Buzzards Bay as well as anybody... I know he'd be bummed if he had to wind'em up on a hot striper bite to save your sinking hide

[jorgeinmiami]

I might have interest in your engine
send me a email with contact info

[FishStretcher]

Bought an F100 today, so I listed the V6 Yamaha 175 for sale. Looks like they go for a bit under $2000 locally.

The F100 looks to be all powerhead. It needs carb work, but the deal was ok. I guess I will never got my 20' MA to 50 knots...

Yeah, a used 4S Yamaha. Going to look at it tomorrow. I wonder what a running 1988 175 Yamaha is worth with controls and a SS prop. Probably $500...

[eggsuckindog]

Good luck - keep us posted

[Bigshrimpin]

Bought an F100 today, so I listed the V6 Yamaha 175 for sale. Looks like they go for a bit under $2000 locally.

The F100 looks to be all powerhead. It needs carb work, but the deal was ok. I guess I will never got my 20' MA to 50 knots...

Just another piece of advice . . . I'd recommend you see how that 100 works on your boat (and make sure it's just the carbs that need to be rebuilt) before you sell the 175. The 100 is NOT a powerful motor. Also check the shift shaft on the old yamaha 175 . . . they tend to rot out after 20+ years. I have a couple of barge/party boat props 11p and 13p that I think will fit that motor. You are welcome to try them out.

[FishStretcher]

I will keep that in mind. I definitely won't swap them until it runs right. I was going thru the fuel system today and found lots of water, cleaned it out and it ran better, but not good yet. All I did was drain the float bowls and get fresh gas(ohol) to it. #1 isn't getting much fuel. A little carb cleaner when running and it perks up. Some say the strainer/filter on each carb should be looked at. When it isn't snowing up here I will look at that.

The 175 ran ok on muffs last year, so I guess that's the backup plan.

[Yz2009]

i am interested to see how the f100 runs on your 20MA

Ive got a F100 on a 23' seaox. It only goes about 27 WOT at 5500rpms. Cruises around 23 at 4400rpms