Max HP for my 245 explorer re-power

[tchipshot]

Hi all! I’m needing to re-power my 97 245 explorer. I’m looking pre-owned save some money. What is the max HP I can throw on the boat? My research is suggesting 300 is the max. I planned on going with another 250 but found a great deal on a Yamaha 350. I wouldn’t have considered that big of a motor if it wasn’t for the deal being offered. Thanks for the help

[RickK]

If you plan to keep the insurance on your boat you'd better stick to the manufacturer's max rating.

[Capt. Bob]

You are correct. Max HP is listed at 300. Rick makes a good point about insurance but my concern would be weight. If it is close in weight to a 300hp it would work without much concern to transom strength.

Good luck.

[ConkeyX]

 It could also be that 300 hp engine in 1997 was heavier than current engines. I don’t recall many 300’s back then so probably max. rated for twins.
Just looking at NADA info & most engines in ‘97 were 225-250 coming in under 500# while 350 Yamaha is almost 800#.

[Capt. Bob]

Following that line of thought, a 97 150 was just over 400lbs. so twins would exceed that 800 lb. weight.

Still, that's a lot of weight on the back of that boat.

[ConkeyX]

Makes sense. If that model had optional twin 150s then I say weight of single 350 shouldn’t be an issue

[GoneFission]

Is your current engine a Yamaha?  If not, you may need new controls and gauges - that may make the deal "not so great."  The easiest up-power will be to stay with the same manufacturer.  The 350 Yammie is a big, heavy V-8 engine.  Most 300 HP engines are V-6, a lot lighter, and you won't get in insurance trouble.  There are a lot of used 300s in the market now, Merc, Rude, Zuki, and Yammie - look around a bit and you might find a surprise.   

[GT]

Hi George here . New here to forum . If you go with the 350hp (monster) i sure would like to see a picture if you don’t mind. I am in market for a 250 and asked my self the same question 300 or maybe a 350 when repowering. Good Luck