Planing a Bayliner Capri

[southkogs]

Re: Planing a Bayliner Capri

...So I'm not overly concerned about the 50hp. It's real close to coming up to plane now...

...You're just way underpowered on that boat...

A little correction on my part: you're not WAY underpowered, you're probably short about 20HP. A 70 on the back of that boat would make all the difference. Being on plane isn't your issue ... gettin' on plane is. You just need a bit more chutzpah to get you over the top.

You may want to pull your floor at some point and put some flotation foam in (have a look around the restoration forum), but if the rest of the boat is solid then you should be fine. Especially on the lakes and rivers in KY. Just be a little careful - I've been very impressed by the types of storms that pop up on the lakes here in TN. I've only been scared a few times out on the water, but one of them was during a pop-up storm here in TN on an impound. A couple of bad stringers and I woulda' been swimming to shore.

 

[WIMUSKY]

Re: Planing a Bayliner Capri

"Only" rated for a 90hp? That's a huge jump from a 50. I bet the smallest motor they put on the boat when new was a 70. You may get the 50 to work, but, will you really be happy with it's performance? You may want to consider selling the 50 and put that money towards something bigger...... I know you really want the 50 to work, but, you may still be talking about this issue a couple months from now.....JMO

 

[jestor68]

Re: Prop for Bayliner Capri 50hp

Re: Prop for Bayliner Capri 50hp

I looked at the current 3 blade prop, I don't see any markings. What pitch should I go with and three blade or four blade? I'm willing to throw a little cash at the current 50hp.....if it will help plane her out....

You probably will have to remove the prop to read the numbers on the hub. See my previous post for the suggested prop size.

I have owned three Bayliners, including the current one. They were all good boats. I only traded to get a bigger one.

 

[SigSaurP229]

Re: Planing a Bayliner Capri

If the boat is rated for a 90 hp then you need to calculate 80% of 90 hp is the minimum that you really need. Which would put you right at a 70 hp to plane and run well. Not to mention if you aren't planing the boat you are wasting gas as well since you are plowing water instead of gliding on top.

 

[l911]

Re: Planing a Bayliner Capri

I found a 70hp I may use, I was also wondering if I could fill the old fuel tank with flotation foam (2 part) to add a little buoyancy-lift to the rear?

(No lectures on using the built in tank)

 

[saumon]

Re: Planing a Bayliner Capri

Filling your old fuel tank with foam will add ZERO buoyancy/stern lift unless your boat is completely swamped (under water)...

 

[SigSaurP229]

Re: Planing a Bayliner Capri

I found a 70hp I may use, I was also wondering if I could fill the old fuel tank with flotation foam (2 part) to add a little buoyancy-lift to the rear?

(No lectures on using the built in tank)

Adding more foam under the fuel tank will make no difference at all. Either your way underpowered, water logged, or the third possibility is that you have a hook in the hull. Two feet of standing water is ALOT of weight for the boat and that trailer to support without some warping.

Take it out by yourself with 6 gallons of gas absolute minimum gear required remove the kicker, drop any and all extra weight and see if it will plane.

 

[riptide09]

Re: Planing a Bayliner Capri

My thoughts would be, if you going to replace the motor, go for the max HP. Not that much price difference between a 70 and 90. You can never have to much power if you keep within the ratings of the boat.

 

[smokeonthewater]

Re: Planing a Bayliner Capri

Go get a 13 pitch prop... she'll likely jump on plane pretty quickly

against the advice of the naysayers I put a 1976 115 on a 20' boat rated for 200 hp... With the right prop, in my case a 15 pitch, it jumps on plane almost instantly and runs out great. I have no top speed data but I estimate mid 30's. With a 19 pitch prop the same boat and motor lugs with the nose sky high and doesn't want to plane.

 

[southkogs]

Re: Planing a Bayliner Capri

I found a 70hp I may use, I was also wondering if I could fill the old fuel tank with flotation foam (2 part) to add a little buoyancy-lift to the rear?

(No lectures on using the built in tank)

50HP to 70HP will make a world of difference on that boat. You'd be surprised that with the 50, she'll struggle to get on plane - but with the 70, she might be able to pull three skiers (nothing fancy, mind you - but it'll get 'em up).

Adding foam would actually add weight to your boat, not buoyancy. You're boat has nearly all the intrinsic buoyancy it'll get as it sits. The only way to make it "float more" is to remove weight (practically improving buoyancy). Beyond adding HP (probably your biggest issue), reducing weight is the only way to make the boat float differently.

 

[H20Rat]

Re: Planing a Bayliner Capri

As a previous owner of that exact hull, I can tell you that an 85hp force on it is not overpowered even! With a light fuel load and 2 people on board, it will be lucky to hit 35 mph (with an 85).

Although the boat is relatively light, the hull is very 'wet'. I'd even call it a borderline semi-displacement hull. It doesn't have the distinct transition to plane that most boats have, it just starts moving faster.

 

[NYBo]

Re: Planing a Bayliner Capri

The boat was only sold with an 85 Force, and that is the maximum HP rating of the hull.

 

[l911]

Re: Planing a Bayliner Capri

I took off the kicker motor and added a planing fin to the 50HP, I haven't tried it yet but if that doesn't do the job for cruising, I'll picked up a nice running V4 Johnson 88HP. The boats rated at 90HP, so I think the 88HP should work ok, it has the electric tilt on it. Gotta love Craigslist!

 

[l911]

Re: Planing a Bayliner Capri

The boat was only sold with an 85 Force, and that is the maximum HP rating of the hull.

The Coast Guard rating certificate, matching the hull number, states it's rated for a 90HP, & 5 passengers.

 

[NYBo]

Re: Planing a Bayliner Capri

The Coast Guard rating certificate, matching the hull number, states it's rated for a 90HP, & 5 passengers.

Strange. I wonder if you have the original capacity plate. Capacity plates don't have the HIN on them, and AFAIK, the 87-89 models were virtually identical, and I know these were rated for 85 HP (not that the 5 HP difference really matters a whole lot). NADA appears to support this, too.

EDIT: Here's what my capacity plate looks like:

 

[26aftcab454]

Re: Planing a Bayliner Capri

50 HP on a boat rated for 85 or 90 HP is not gonna do it. Sorry but i is a turd.
the fact that 26 year old "value enginered" Bayliner was full of water means the foam flotation is probaly waterloged, the floor ,stringers , and transom are surely rotting.
You cant get there from here.
I wish you the best.
Sincerly,
Joe