PDA

View Full Version : Original Prop


nshaver2
08-07-2005, 05:06 PM
I have an 80hp Mercury outboard (dont know the year) and wated to know what the original prop was that came on the motor. The serial number of the motor is 3058253. Any help?
150aintenuff
08-07-2005, 06:09 PM
I have an 80hp Mercury outboard (dont know the year) and wated to know what the original prop was that came on the motor. The serial number of the motor is 3058253. Any help?


props were optional accessories determined by engine ,boat ,usage by the orginal seling dealer of that motor... there were no standard in box propellers for that engine. give us here all the information on what the engine is on... length, weight, hull type, construction and we can get you in the ball park as to pitch for your aplication
nshaver2
08-07-2005, 07:01 PM
I have a 14 foot trident hull fiberglass boat. I want to use it for to ski and tube behind. I think the prop that is on it right now is oversized and stressing the engine a little. again I have a 1971 mercury 80hp motor. Thanks.
150aintenuff
08-07-2005, 08:36 PM
you will probably be in the 17-21p range depending on the running attitude of the hull if the tri section is out of water or not... does the boat have a tach.. prop to atleast 5K
nshaver2
06-29-2006, 04:09 PM
I dont have a tach on the boat so i wont be able to play with that. So I want a pitch between 17 and 21? and the diameter on it right now is 13.75 and I dont know if that is too large. the fin right above the motor has been chopped up a bit from the prop so thats what made me think the diameter was a little large. Thanks.
dompie99
06-29-2006, 06:36 PM
Wowwwwwwwww

I dont know if i got that right or what,

You wrote:

and I dont know if that is too large. the fin right above the motor has been chopped up a bit from the prop so thats what made me think the diameter was a little large. Thanks

Does that mean that you have marks under the Fin, saying that your prop has touched this element ??6

If so, it's way too big a diameter for the Lower Unit.

Jacko
vector mike
06-30-2006, 05:09 AM
Put a 13x17 on it and see how it runs. You need the extra pull out of the hole for pulling up skiers anyways and while tubing you usually don't do over 25 or 30 mph.
hsbob
06-30-2006, 09:18 AM
the 17 is right i used a 19 on a 85 - 15 check mate but it was more for speed.