For Frank Acampora!(mostly) anyone please chime in too

[notsunkyet]

Ok so if ya have a older bayliner 1600 capri 1986 modle ... and you have the force 85 and it runs good. Obviously run it till it breaks. and any running motor is a good motor... Having said that, if you were to drop another motor on the back end what engine would you look for? Keep in mind the tag say no more than 90 hp transom. I have redone the transom, floors stringers etc. in this barge and i used 3/4 and 1/2 where they only used 1 pieces of 3/4. can i stick a bigger motor on it?

 

[CharlieB]

Re: For Frank Acampora!(mostly) anyone please chime in too

Usually, No.

Many states are passing laws restricting OB HP to that rated by the hull manufacturer.

Obviously, you feel that your repairs strength far surpass the original, but without certification/documentation of the repaired hull rating, Water Patrol in a State with a HP Law, would have no choice but to issue you a summons and/or order you to pull it from the water.

 

[Dave K.]

Re: For Frank Acampora!(mostly) anyone please chime in too

From my limited knowleldge on rating, your hull design will only handle so much no matter what you hang off the back. A bigger motor, say 125 or 150 may only get you an additional 5mph.

sounds like you made some good repairs to your rig & certainly shored up the transom & floor but a bigger more powerfull motor may not give you much more speed.

 

[NYBo]

Re: For Frank Acampora!(mostly) anyone please chime in too

From my limited knowleldge on rating, your hull design will only handle so much no matter what you hang off the back. A bigger motor, say 125 or 150 may only get you an additional 5mph.

sounds like you made some good repairs to your rig & certainly shored up the transom & floor but a bigger more powerfull motor may not give you much more speed.

That's true for a non-planing hull, but it works differently with a planing hull. With the correct prop, there is a potential for much greater speed, and that's the problem. The hull is designed to be safe and stable up to a certain speed, and the maximum horsepower rating takes that into account, as well as the structural issues. I wouldn't want to be aboard a 16' Capri doing 65 MPH. Hit a wake, and you're airborne!

To answer the original question, you have a little fudge factor. Your Force motor is rated at the powerhead. A newer motor will be rated at the prop, which works out to a little more usable horsepressure. So a modern 90 HP with fuel injection would be your best legal and safe option, IMO. You would get a little more horsepower and better fuel management- more fuel economy and less pollution. A four-stroke would be somewhat heavier than a two-stroke; I would stick to the latter.

BTW, I'm talking about a used motor. A new one is way too much money to a cheap guy like me.

 

[Frank Acampora]

Re: For Frank Acampora!(mostly) anyone please chime in too

Well, you're asking the wrong guy! Cuz I have a Force 125 on the back of a 14 foot flat bottom originally rated for probably around 35-45 ponies. It is highly modified and does go 60. I am modifying it to try for 65 but---- I only use it when there is no traffic. A good wake will put me in the air and get the dry side wet. Of course, this winter my 15 foot Glastron rated for 90 will be getting a heated up Chrysler 140, just to see what she will do.

The little 10 foot tunnel hull in the avatar was originally designed for 25 HP. I have an older Chrysler 50 on it. It only does 44 MPH and dangerously. I have had that one upside-down three times. Any lapse in attention or judgement comes back immediately and bites you in the a**.

But what is right for me is not necessarily the thing I would recommend for others.

BTW: My daily driver is a 21 foot cuddy rated for 170 with only 140 on the back. So, there is a shred of reason in my head.

Understand that a 120 or 125 will only be about 30 pounds heavier than your 85 and will not cause the boat to be stern heavy. And, IF you have done a proper job rebuilding the transom and have enough reinforcement, she will handle the extra power. She will however most likely take in a bit more water into the splashwell when you slow down fast. And, you may be disappointed with the increased speed. With a 90 my 14 footer did 55 with a 125 I only gained 5 MPH. This is typical and about what I expected. since it generally takes 4 times the horses to double speed. However: Hole shots are breathtaking-- the boat is on plane and at 45 in about 3 seconds (guesstimate) Then as I feed in up trim the rpm and speed rise till she hits 5600 and the hull is riding with only the last foot wet.

However, if I were you, and wanted to use the boat as a daily driver, as written in the above post, a newer Force 90 say up to 1994 would be the way to go. Decent power and bolts right up.

And yes, with more than 90 you need to worry about the local gendarmes. And you don't want to have an accident since you will be negligent--doesn't matter what you did to the hull to accept increased horsepower, factory rating is what the lawyers will beat you over the head with.

BUT ultimately: It all depends upon how you want to live your life

OR As the two doctors in the E.R once said about me after a ski accident: "How can someone so old be so crazy?" "No! The question is: How can someone so crazy get to be so old?" Gee! Thanks docs.

Send me your email in a private message and I will send a couple of decent photos of the 14 and 10 footers. I just can't post good ones here.

 

[puddleboater]

Re: For Frank Acampora!(mostly) anyone please chime in too

Anyone ever try feeding nitrous oxide into their motor?

BTW.....I had the same boat years ago and it had a 70 HP Force on it. I thought the 70 did fine on that boat, although I'm no speed junky.

 

[notsunkyet]

Re: For Frank Acampora!(mostly) anyone please chime in too

Awesome rplies thanks all! Im not so much looking for brute power John Force (hey thats cool) would be proud of im thinking more along the lines of parts avilibility, fuel economy, and low idle... As i have read these motors are 60 tech and were designed for WOT all the time and they suck at idling or trolling.
Here in Texas i have seen many boats that have 115 to 150hp motors from all manufactures for dirt cheap! so i was toying with the idea of what might be a better engine.
I know its like the old war of FORD and CHEVY depends on what ya like but im looking for ease of operation. OR am i making more out of a engine than i should and be happy with the force? The Force engine is a good engine i know it gets alot of bad press but if you take care of it, it will take care of you.
What would be best prop be for hole shots and wot riding anyway

 

[eight tracker]

Re: For Frank Acampora!(mostly) anyone please chime in too

My 1985 85hp force ghas a 17p prop and a whale tail on the lower unit and jumps out of the water and gets her up on plane in no time,16foot bayliner fish-n-ski.
tom

 

[sho3boater]

Re: For Frank Acampora!(mostly) anyone please chime in too

First you need a transom to hold more motor, if your is the same as my '83 I'd say some knees and thicker transom are needed as its only 3/4. I thought about doing that and running a jack with the 85hp.

According to some stuff I look up the 85hp is prop rated after '83, some say no. So, I dug up my manual and it only says BIA rated@ 5000RPM, 72.39CI, 275lbs with trim/tilt.

You could run an inline Merc, they are under 300lb and 115HP, you can even cheat and put a 90hp cowl around it. Most other motors are heavy, in particular newer ones, and that changes handling and speed in a negative way. Naturally the older motors are not going to get better mpg no matter the brand. If I bought one today it would be an etec, just my choice and it might depend on what I found a deal on. I think but not sure you could put a 4cyl power head on the 85hp leg I think it is the same but check first.

Really other things are best for performance, like taking any extra weight out of the boat, having the prop done to performance specs, rounding the front of the skeg/LU some, ensuring the pad/bottom is straight and smooth, putting the weight more to the stern of the boat, raising the motor some, all that stuff. I get 43gps out of my 16 capri, sometimes only 41 and change with normal LU lube and different weather. But I could repeat 43 with synthetic lube and most weather with a thinned and cupped SS 19p just me in boat. Gets on plane better with the trim up, fairly fast, it runs pretty good considering. I'd like to see 50mph, but hey its not that kind of boat like say a hydrostream, and really for a 16 bowrider that speed is respectable. Most of these the foam is full of water, increasing weight and slowing them down.

Another issue is its hard to fit a performance prop to these.