could a damaged prop cause this?

[ne7800]

ok if you read any of my other post you know i just got my boat running fist time out i never really looked behind me but lastnight i took it out (well before dark) and i noticed that water was spraying up at the back of the boat not like a rooster tail but like a spatter comming up just behind the transom (boat is a 1980 four winns 180 marquise 470 pre alpha 1) i noticed that the prop is pretty chewd up and one of the blades has a small bend in it, if i can find my camera i will post a pic of the prop. any help will be great

 

[ne7800]

Re: could a damaged prop cause this?

ok here are some pics

 

[steelespike]

Re: could a damaged prop cause this?

Prop isn't likely causing spray but a damaged prop will cause premature gearcase problems.You need a prop repair or replacement.The second pic shows something like a coil of wire at the bottom of the transom perhaps that is the problem.

 

[ne7800]

Re: could a damaged prop cause this?

i think what your seeing is the hydroloic lines for the trim

 

[gcboat]

Re: could a damaged prop cause this?

One thing I can tell you is that the prop needs to be replaced - like now !
Tilt your lower unit all the way down while still on the trailer - see if those trims lines don't drop down below the waterline - might be as steelespike mentioned.

 

[ne7800]

Re: could a damaged prop cause this?

ok what size prop should i get the one that is on it has these numbers on it
PW4072G
12262
B1418
PW1819D
also a little info the plate on the engin says wot is 3800-4200 but at the moment wot is up to almost 5000 and the boat seams slow 30mph on the speedo (i know speedos are always off but it feels like thats is pretty close) it has a 470 (3.7) 170 hp mercruiser

 

[steelespike]

Re: could a damaged prop cause this?

Perhaps someone can decifer those numbers.I would suggest repair your prop and get us the new numbers,can't tell much from that prop. you can always use it for a spare if you need a change.The prop shop can tell you the diameter and pitch too.

 

[mthieme]

Re: could a damaged prop cause this?

Have you looked down the back to see where the spray could be coming from when it is occurring?
I doubt it the prop although you need to fix it.
Mine started doing this after a bellows kit was replaced this year. It looks like a bolt is deflecting water upwards. Perhaps one was replaced with another too long? Dunno, but it was easy to spot underway.

 

[kenmyfam]

Re: could a damaged prop cause this?

Prop needs fixing. Out of balance = excessive wear.

 

[ne7800]

Re: could a damaged prop cause this?

ok so i decided that i will replace my prop the ironic thing is it looks like a new prop will cost more than i paid for the boat lmao

 

[steelespike]

Re: could a damaged prop cause this?

Pretty sure a repair will cost less than new and then you will have an accurate reading to make a decesion on a prop change if necessary. Of course you can run the repaired prop if your happy with the performance.