What the perfect motor for a 170?

[Pat Green]

Rick, yes my boat has a tunnel about 6 inches wide running starboard to the center of transom with a small sump about 8 x 6 inches.  I installed the two new drains as low as possible to floor about a foot from starboard and port.

[hunter]

Miguel maybe you are right I checked my speed with my gps last sunday and toped out at 41 with a little chop.  I guess I was wrong or the colorado river current was pushing me the last time.

[Miguel]

That could make a difference.....
These hulls are heavy for their size when compared to other 17 footers or even larger bay/flats boats. I believe they were designed to have a terminal speed of about 40mph.  It would take substantial amounts of additional HP to increase speed above that treshold.

[DoOver]

I have a 140 V-4 Johnson on mine and on a calm night going with the tide and me and my wife, GPS said 39.8 mph. It felt like thats about all the hull could do anyway. If I repowered I'd go for a 90 Yam. Less weight. I'm to heavy at the transom at drift.
Brian

[GoneFission]

Hey, if you're going to raise the deck and move the scuppers and all that, why stop at 115 on that 170?  What you need is MORE POWER!    :twisted:   With 4 liters, 300 HP, and ONLY 604 lbs dry - put one of these on the back - as long as you never stop you will be happy!  



I can see the Forum signature now:

DamnFastBubba
1974 Aquasport 170
300 HP Suzuki 4 stroke
Sinking soon!
         

       

[gw204]

Geez man, where have you been?  We have a new leader in the "ridiculously overweight outboard engine" contest....

F350 Yamaha checks in at something like 804 lbs.      

[JimCt]

But on the other hand, if you want to leave those scuppers where they are...

[John Jones]

Nice Jim.  Marine Surplus has at least twenty motors of similar vintage hanging from the ceiling of their warehouse.  I didn't notice them until the last time I was there.

since we are on a major derail:

As a teenager I had a Scott Attwater 5HP my old man traded from someone.  At 14 I built my own 8' plywood boat with 3/4 plywood, nails,  and roofing cement.  Damn motor almost sunk it.  It worked a lot better with a paddle.

My youngest son has an OB made by the Martin Boiler Company.  I have not seen it yet and don't know the HP.  He said I could have it if I wanted it but I have enough junk already.

[JimCt]

De-rail?  The man asked for suggestions.

OK, so how 'bout the Scott-Atwater 5?



Seriously though, I think 115 is the edge for a 170.  Weight's the killer with big engines.

[RickK]

But on the other hand, if you want to leave those scuppers where they are...

Is that a saltwater engine?  

[JimCt]

   

[RickK]

Geez man, where have you been?  We have a new leader in the "ridiculously overweight outboard engine" contest....

F350 Yamaha checks in at something like 804 lbs.      

  That would definitely sink my little boat - imagine backing it down the ramp and the boat stays on the trailer, never floating off, right under water....  :cry:  

It won't be long before you start seeing these stacked up as "trips" or "quads" on the back of some tournament/go-fast boats.  Let me see, 2 of these=more than my entire 170 with motor today.