ranger boat will not plain out?stands straight up.

[licketdsplit756]

i got a 1984 335v ranger bass boat 16 ft put a 1988 140 hp johnson on it..j140txcc was running a 115 johnson...ive done tilt and trim everything i can think of...this motor eighther has to much hp..but ive seen the same with 150 hp on them....it will not plain out....the prop is aluminum looks to be the original.... what em i not seeing....i dont know the pitch of the prop.. i do know it came off a center console boat 21 footer....it seems to have way to much power for my boat...why? its a big bore looper...but im thinking it should be able to handle it..someone said to me the center part of the motor was what johnson used in there race engines . im totaly confused...? can i make this engine work on my boat>

 

[Bart Sr.]

Re: ranger boat will not plain out?stands straight up.

Is the prop you have on the one that came with the motor??

Could be a spun hub>.

EDIT--Does it get up to speed or just lug along??

 

[Les Robb]

Re: ranger boat will not plain out?stands straight up.

May be heavy paint but somewhere on the prop you will find the numbers. Also who mounted the engine and is the incorrect shaft length causing problem. Finally, a 21' center console could weigh a whole lot more than your 16' ranger but unless you have a ton of weight in stern it should get up and lay down asap if the trim is correct.

 

[licketdsplit756]

Re: ranger boat will not plain out?stands straight up.

bart if and seldom have i got it to happen. when i do get it to plain..i can hit 60 mph in seconds....this is just a thought. it has a long lower unit im guessing 25 inch..i bolted it on the boat with the top 2 holes so it is resting on the transom...cavitation plate is about 6inchs lower then the bottom of the boat. could this have some effect on that.?i can raise it up..my nieghbor seems to think that is what is wrong but he dont even own a boat lol

 

[Les Robb]

Re: ranger boat will not plain out?stands straight up.

Think your neighbor is on to something anyway. I don't know how to get it posted here but in faq section there is info on correct height. Cavitation plate should be even or slightly lower that hull. Got to get ready for work.
It's under poboy 67

 

[Bart Sr.]

Re: ranger boat will not plain out?stands straight up.

cavitation plate is about 6inchs lower then the bottom of the boat. could this have some effect on that.?i can raise it up..my nieghbor seems to think that is what is wrong but he dont even own a boat lol

Getting the cav plate as even with the bottom/keel as possible would be the first thing to correct.Then water test.

 

[22E6441]

Re: ranger boat will not plain out?stands straight up.

That's your problem.

You either need a jack plate or something to raise your motor higher, or you need a different motor.