Mercury 40hp

[Jawzman]

I just received a 14 foot boat... Needs a little work but nothing big... I have a 40hp mercury outboard motor. How fast would be the approximate speed i will get out of it.. I am looking to go tubing in it and wondering if it will have enough power... Please help...

 

[corm]

Re: Mercury 40hp

Hi,

If you have an enclosed bottom tube it should be ok.
If your using a truck tube it will not be enough HP to get it up
on top pulling an adult.

 

[Jawzman]

Re: Mercury 40hp

It is a 1977 mercury 402 40 hp.... I believe.... And i recently took off the cowl to the motor to check it out... And as i was putting it back on the front cover latch broke off.. (The one that is connected to the actual cover it has a spring on it).. I cant seem to find it anywhere.. Now the front cover wont stay on... Help

 

[grizzreaper]

Re: Mercury 40hp

www.americanoutboard.com
go there and see if they can help or www.maxrules.com

 

[ifixf18s]

Re: Mercury 40hp

Just wondering, I have a 16 foot tracker and the max size engine i can have is a 40HP. Would a 40 be safe to use on your 14 foot.

 

[Jawzman]

Re: Mercury 40hp

my boat says the max i can go would be a 60hp

 

[Jawzman]

Re: Mercury 40hp

Still cant seem to locate that part... Is there anywhere else that would have it in stock

 

[corm]

Re: Mercury 40hp

Hi,

These guys should have what you need.
http://www.twincityoutboard.com/
The part you need is probably NLA
so you will ned to find it used.

 

[Jawzman]

Re: Mercury 40hp

I recently found a 80 hp motor that i am looking at buying... I am just wondering since my boat only says max out at 60 hp... I was wondering why not bigger... Do i need to reinforce something... New to boating but boat doesn't have enough power to pull...

 

[willan]

Re: Mercury 40hp

Jawzman, not a good idea to exceed your posted HP rating. Boats are designed around specific parameters for safe operation. I wouldn't want to go two fast with a 14 foot vessel. My 16ft starcraft with a full 2 piece dash empty with me in it would do 30MPH with a 40hp Merc. Tubing is not to exceed 16mph. Be carefull mate.....Don't forget that you can adjust the prop pitch for more out of the hole power.

 

[Jawzman]

Re: Mercury 40hp

i thought the 40 only went top speen 20 not pulling.. What if I had 3 other people in the boat along with me.....

 

[willan]

Re: Mercury 40hp

Again, you need to try. If you have 4 people on the boat check the tach. If it won't reach operating speed a prop change might help. You will gain out of the hole but lose a little from top end. Try a prop calculator......

 

[YN2(SS)]

Re: Mercury 40hp

I have found a lot of the parts I need for my 1980 Mercury 40 at Marine Engine. Talk to Clif Casavant. 802 247-4308 or 802 247-4700.

As far as the motor, I use the one above on a 17 1/2 heavy fiberglass trihull bass boat. Put a stingray on it to get it to plane good. 28 mph w two guys and fishing gear. But the boat could use more.

 

[Jawzman]

Re: Mercury 40hp

Is there neway i can bump the motor up to get more power and speed out of it??

 

[Jawzman]

Re: Mercury 40hp

Had a problem when I started the motor today the water was not coming out of the pee hole... I dont know what to do.

 

[corm]

Re: Mercury 40hp

water was not coming out of the pee hole

Your waterpump impeller may need replacement or the thermostat could be bad I would replace the imp and check the stat.
I guess I should ask, did you check the tell tale to see if it was plugged?
Also did the engine block get hot?

Concerning your "Can I hop it up post."
Yes you can, but it is not worth it It would probably
be cheaper to buy a bigger engine.