60 hp max can I use a 85hp ?

94saleen

Cadet
Joined
Jun 5, 2007
Messages
12
I have a 1973 arrow glass tarpon 15' boat that has a max rating for a 60 hp could I use a 85hp evinrude or is it way to dangerous, I have a 50 hp evinrude on it now and having motor issues
 

bogggar1

Petty Officer 2nd Class
Joined
Jun 21, 2007
Messages
114
Re: 60 hp max can I use a 85hp ?

Sell ur 85hp and get a good running 60hp... max ratings are set for a reason.:cool:
 

iwombat

Captain
Joined
Jul 12, 2006
Messages
3,767
Re: 60 hp max can I use a 85hp ?

Aside from the safety and structural issues . . .

You'll basically void out any insurance coverage you have by running an outboard that's too big for the boat's rating.
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: 60 hp max can I use a 85hp ?

That's only a tad under 50% overpowering. You think anybody's going to tell you to do that?
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: 60 hp max can I use a 85hp ?

what's wrong with the 50hp? i went back a read your post. did you ever do a compression test. what were the readings???
 

WillyBWright

Fleet Admiral
Joined
Dec 29, 2003
Messages
8,200
Re: 60 hp max can I use a 85hp ?

In many (if not most) states, it is illegal to overpower a boat. In my state, if somebody made a 61Hp motor and you mounted it, you'd be breaking the law.
 

chbailey

Petty Officer 2nd Class
Joined
Jul 4, 2007
Messages
116
Re: 60 hp max can I use a 85hp ?

Get that compression test on the motor as suggested by tashasdaddy. It'll save you a lot of effort and help pinpoint the real problem. Mine turned out to be a carb rebuild being needed.
 

94saleen

Cadet
Joined
Jun 5, 2007
Messages
12
Re: 60 hp max can I use a 85hp ?

thanks guys I did the compression test it came out fine, I pulled the plugs out that were almost new and they were black and oilly, cleaned them up but cant seem to get it running right, put different carbs on and still can run over 9 mph
 

tashasdaddy

Honorary Moderator Emeritus
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Nov 11, 2005
Messages
51,019
Re: 60 hp max can I use a 85hp ?

when you say fine, what is fine.
 

cougar1985

Lieutenant Junior Grade
Joined
Oct 7, 2005
Messages
1,023
Re: 60 hp max can I use a 85hp ?

so called new plugs can foul and be shot also ,try a new set and see what happens,i know on my snowmachine if i foul plugs they are no good anymore period.
 
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