Can an evinrude 25hp be pumped up to 30hp and so on?

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Robert Howard

Cadet
Joined
Mar 15, 2003
Messages
28
I have an evinrude 25hp, i was told that it is the same block as the 30 and 35, if i just put a different carb on it will i be able to do that and get more power?
 
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DJ

Guest
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Cropduster,<br /><br />True they shared many components, yet the 30/35 engines had other suttle changes to such things as:<br /><br />reed plates<br />carburetors<br />induction porting<br />exhaust porting
 
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NathanY

Commander
Joined
Mar 16, 2002
Messages
2,408
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

why do you want a 30hp motor on a 13ft boat? That seems very dangerous to me.
 
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ajp

Petty Officer 1st Class
Joined
Jan 6, 2002
Messages
280
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Not much difference between a 25 and a 30hp. Just uses a little more gas.
 
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G DANE

Commander
Joined
Nov 24, 2001
Messages
2,476
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

If you get the intake housing and carb from a 35 HP you will get a little more power, but not feelable - do a search for speed formula here or in boat section and you will see how little speed you get. If you get midsection and gear form a 35 combined with intake housing and carb - you got a 35 HP.
 
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DJ

Guest
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Mike,<br /><br />I think I'd stay with what you have.<br /><br />That 25 hp is one of the toughest engines ever made. It was/is the mainstay of many fishing camps and outfitters throughout the world.
 
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brother chris

Commander
Joined
Jul 28, 2002
Messages
2,063
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

I have to disagree with Nathan. A 35hp is NOT to much for a 13'boat. I had a 12' with a 40hp on it. And to top it off, the 12' I had was pretty much just a bare hull with 2 bench seats. It went really fast, when I needed it to. <br />It is only dangerous if you are an idot driver. As long as you drive carefully and use the hp when you need it, have fun. <br />Just my opinion. ;)
 
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brother chris

Commander
Joined
Jul 28, 2002
Messages
2,063
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Let my add to my above post. <br />What ever you do, just make sure you check what the boat is capable of taking. If it says it can only take a 30hp, that is all I would put on it. <br />I am the kind of person, if my boat says max hp is 100, I am putting a 100hp on it. No sense in being under powered. <br />More hp the better as long as you don't go over the limit of the boat cause then that is dangerous. <br />Happy boating :D
 
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FlyBoyMark

Ensign
Joined
Apr 14, 2002
Messages
934
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Nathan...go to this link: web page <br /><br />Ya think this boat is dangerous @ 13'10", and its got a souped up 40 on it that now goes even faster than when I posted that pic?
 
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Lark40

Senior Chief Petty Officer
Joined
Oct 29, 2001
Messages
793
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

FlyBoyMark,<br /><br />Let's say you have an accident and hurt somebody.<br /><br />Either the water cops or the victim's attorneys will determine that you have overpowered your boat. In that case, your insurance company will declare your coverage void due to your deliberate negligence. You will lose everything you own. Something to think about...<br /><br />If you want power and speed, get a boat designed for it.
 
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NathanY

Commander
Joined
Mar 16, 2002
Messages
2,408
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

If you give me all the measurements of the boat I will be able to tell you if it is legal or not. I will need the Length, Width and Transom height. I personally do not care one way or the other what you do with your boat, I just am not a fan of overpowering boats. Just my opinion though.<br /><br />That is a good looking boat though.
 
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FlyBoyMark

Ensign
Joined
Apr 14, 2002
Messages
934
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Lark40...all your baloney does not apply in this state so put a cork in it unless you know what your talking about..the boat is insured and the insurance company is fully aware of its modifications which are professionally done by my business on SEVERAL boats. Do not apply your standards to Florda statutes and regulations. That goes for you too Nathan..stick to what you MIGHT know best. I have been over this subject several times on this board and there seems to be a consistant blab of opinionated people without the REAL facts. USCG rating is a guide and NOT the law.....unless your uninformed socialist state you live in is telling you what to do BASED on the USCG HP guide. In addition, the USCG "GUIDE" recomends up to 50 HP on this boat. Here's a tickler for ya....How about the 21' 100+ MPH 300 HP Merc, Stroker Bass Boat..where does that fit in? The boat is rated "UNLIMITED" HP. There is no danger in speed..only the unskilled idiot driving it.
 
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rudeafrican

Petty Officer 1st Class
Joined
Oct 29, 2002
Messages
225
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Chill flyboy, on this here site everybody, including yourself, is allowed their opinion. What is not acceptable though is bad mouthing others. Let's just state the facts and let everyone decide for himself who's advice is good or not. :)
 
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NathanY

Commander
Joined
Mar 16, 2002
Messages
2,408
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

You plainly asked for my OPINION and now you are going to bash me for it? What a JACKASS!<br /><br />You want the real fact? If you put your wife and daughter in that boat then your are an IDIOT. Sucks when you people start bashing you doesnt it. Dont ask for an opinion and then start running you mouth like a moron when someone replies. That is very RUDE. If you dont wnat the replies dont ask the question.
 
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FlyBoyMark

Ensign
Joined
Apr 14, 2002
Messages
934
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

The first uninformed bash:<br />"FlyBoyMark,<br /><br />Let's say you have an accident and hurt somebody.<br /><br />Either the water cops or the victim's attorneys will determine that you have overpowered your boat. In that case, your insurance company will declare your coverage void due to your deliberate negligence. You will lose everything you own. Something to think about...<br /><br />If you want power and speed, get a boat designed for it."<br /><br />The second uninformed bash:<br /><br />"If you give me all the measurements of the boat I will be able to tell you if it is legal or not. I will need the Length, Width and Transom height. I personally do not care one way or the other what you do with your boat, I just am not a fan of overpowering boats. Just my opinion though."<br /><br />And the final bash after repudiation by poster towards uninformed comments:<br /><br />"You plainly asked for my OPINION and now you are going to bash me for it? What a JACKASS!<br /><br />You want the real fact? If you put your wife and daughter in that boat then your are an IDIOT. Sucks when you people start bashing you doesnt it. Dont ask for an opinion and then start running you mouth like a moron when someone replies. That is very RUDE. If you dont want the replies dont ask the question."<br /><br />I have operated my business in the professional marine fabrication, modification and building business for 25+ years, HOW ABOUT YOU?
 
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NathanY

Commander
Joined
Mar 16, 2002
Messages
2,408
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

I wrote some thing here, but erased it this is not my post. I am done with you, and if you would like to continue this post it in NTDWB forum.
 
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Robert Howard

Cadet
Joined
Mar 15, 2003
Messages
28
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

Your all a bunch of assholes and i just wanted some information and i started a bunch of ****. Who cares how much over your boats limit you have for power it is your own decision and who cares if you get in a wreck and your insurance is cancelled BOOHOO.<br /><br />Pissed off boater,<br /><br />Mike
 
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crazyman

Cadet
Joined
Mar 12, 2003
Messages
13
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

I am running a 12ft flat bottom tinnie with a 35hp Evinrude, our nieghbours have a 12ft dingy with a 40hp johnson. On river Murray trips we have no problems if you are a good pilot and dont try to u turn at full power, then the ***** hits the fan.
 
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ghostrider

Seaman
Joined
Nov 14, 2002
Messages
73
Re: Can an evinrude 25hp be pumped up to 30hp and so on?

CropdusterPilot, I have a "80 Mirrocraft Deep Fisherman 14' that is rated for a 35hp. I have a 25hp evinrude Tiller on the boat and have run wot in 2" of water. I too wanted more top end at wot, so I started looking for a 35hp Tiller to max out the boats hp rating. In all of my research and the honest info I received about what I could expect in the way of additional speed. I saved my money.. I would have only gained 2 to 3 additional mph, burned more gas and oil and added a little more weight to my transom. With my fat a-- that was the last thing I needed to do. I started looking for (get this) a new used boat. I bought a 19' Fisher with a 150hp Yamaha. I know somewhere down the road I will want more speed and I'll be right back where I was with my Mirrocraft, which performed as well as could be expected with the setup it had. By nature we all have an enjoyment for the thrill of speed at wot. We just need to keep it real. keep it safe, and keep it right. Respect begets respect! I'm sorry that this thread became a battleground for those not willing to agree to disagree, but thats my opinion and you can agree or disagree as can others that may read this post. In the words of Rodney King "Can't we all just get along." CropdusterPilot, I hope you find what you seek. <br /><br />PS. Rudeafrican said it best in his post. That is really what this forum is about. Touche Rudeafrican!<br /><br />Ghostrider :)
 
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