im wondering how fast my boat can go with an 18 hp evinrude?

[trevencath]

my boat is a 6 and a half foot 2 seater, i dont know the model or brand. i cant fine a vin or anything. i also have two outbords, one is an 18hp and the other one is a 40hp. both are evinrudes. im only 16 and i havnt taken it out to the ocean yet. i got the boat and 40 together working for a guy when i was in the 8th grade. im asking your opinoin becouse i know all of you are experienced, and i dont know if i should stick with the 18 or the 40. any advice is appreciated.

 

[MCM]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

Start with the 18hp, I have a suspicion if you try the 40hp on a 6.5' boat, you your boat and motor may end up on the bottom. IMHO

 

[trevencath]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

thats what my dad said, thats what i was thinking to do because it would be safer. thanks for the reply. im also wondering do i even need to add a telltale pipe, i mean if water comes out of the upper exaust hole its ok right?

 

[MCM]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

Yep, go have some fun

 

[trevencath]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

i will, now i just need to buy an impeller.

 

[scrapper]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

6and ahalf ft with 18 hp= Tub with a tornado strapped to the rear!! With 40 hp = Nice knowing you well your alive!!! Honest that 40 would be a lot of fun .. but I can imagine what the outcome would be. Lets do the math 16 years old x 6.50 ft X 40 hp sounds like suicide run Unless you know what your doing , I dont know if you expereinced or not , Defently not for a beginner Iwould think!!

 

[MCM]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

Since your going to use it in salt water you may want to use the Chrome pump kit p/n 0382474

 

[trevencath]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

scrapper, thats funny. i didnt know it would be very fast with an 18hp. mcm, thats a great idea. i wish i could put a heat exchanger on it.

 

[mikeyzx2]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

sell the 40 and buy you a bigger boat. I didn't know they made boats that small, smallest I've seen is 8 foot, little portable things with two seats and mount for trolling motors.

 

[mikeyzx2]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

the Coast Guard might flip their lid when they see a little portaboat with an 18 strapped to it....they would here in 'Bama

 

[MCM]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

Yea.... I'm still trying to visualize what 18 ponies will do on a 6.5 footer. oughta be screamer at the least

 

[G DANE]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

Read a bit of this thread, follow the links to the minimax page, and see what 9,8 HP can do on a 6' boat, close to 35 MPH as I remember, did Trackersoda.

 

[MCM]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

G DANE, I think you forgot to add the thread

 

[jsfinn]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

18 HP seems WAY to big on a 6 foot boat to me and I don't think I'd EVER take a 6 foot boat in the ocean.<br /><br />A 5HP or smaller seems like a better fit.<br /><br />I bet you could sell the boat and motors and buy yourself a boat and motor that match better, and end up with a bigger, safer boat.<br /><br />Just be careful.

 

[alden135]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

I had an old waterlogged 14' MFG with an 18hp on it. The boat would plane with passengers and gear. I suspect your boat will come completely out of the water at 6.5'.<br /><br />WEAR A LIFEJACKET. (a good one, not a 4.97 Wal-Mart one)

 

[gatorred]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

the longer the easy it is to run but the guy in canada had a sea flee doing over 40 mph with a 10 horse motor, johnson, he died last year cancer it was (natl record)it was in his brother's shop in the office on wall with picture of him and his brother getting it.

 

[tashasdaddy]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

i've got a 14' lonestar aluninum, w/15hp. it scary when i'm alone. i know any day the wind is going to catch the bow when i come out of the hole.total weight , boat motor me and gear 480.

 

[Chinewalker]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

I'm actually going to bet that the boat won't get out of its own way with the 18 on it. A boat, any boat, needs a certain amount of planing surface just to get up on plane. A 6.5 ft. boat is TINY! Even the Sea Fleas and Mini Maxes were 8-feet long - that's a good 20% longer! Plus, they were flat bottom and quite wide (4-ft.). Even then they often required the drive to stretch out on the forward deck to get over the hump and get the boat on step. A 6.5 footer has that much less planing surface and is more like a displacement hull. I suspect the motor will strain its guts out trying to get the boat on step, but basically end up digging a hole in the water when all is said and done.. <br />I'm not saying it couldn't be made to work in some fashion, but simply slapping the motor on the boat and going probably won't work.... At least not how you were hoping...<br /><br />- Scott

 

[sycamore]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

Disneyworld has on its lakes a "watermouse". These boats are powered by I think 8 or 9Hp motors and do very well. They are also short, about 8 feet, and are 2 seaters. My wife at 130 lbs can get right up on plane. Me at 265, I lean forward until on plane, but do fine afterward.

 

[MCM]

Re: im wondering how fast my boat can go with an 18 hp evinrude?

You've got a bunch of great advice here mouseboat,<br /><br />You seem to be a pretty smart 16 year old or you wouldn't be asking for advice. I'm not sure of the exact weight of that motor, but quessing in the neighborhood 90 lbs. add to that a tank of fuel. After sleeping on the situation, I have a feeling/hope that when you see where the water line is in relation to the top of the transom once you put the motor, fuel tank and that little boat in the water your probably going to rethink the whole idea before you ever step foot in it.