'90 Johnson GT 150 trim question?

[spin-a-bait]

I just bought a Javelin 389TE w/150 Johnson.Once I get on plane I can't trim the motor up past a certain point the trim guage is all the way up but I still can't get the motor to venilate or throw a rooster tail.I noticed a little switch on the motor bracket does this have anything to do with it.I would like to be able to trim it higher

 

[Dhadley]

Re: '90 Johnson GT 150 trim question?

So youre saying that the motors mounted too low for the prop youre using? Thats good but not surprising. <br /><br />Got milk.....I mean... jackplate?

 

[marinegrh]

Re: '90 Johnson GT 150 trim question?

just a thought, but why would you want to ventilate your engine, ?????????<br />or for that matter throw a rooster tail??????????<br />just curious, what do you top out at rpm wise

 

[spin-a-bait]

Re: '90 Johnson GT 150 trim question?

I don't care about throwing a rooster tail but I know that the higher you trim your motor on most boats you go faster so I was wondering if I trim it higher would I go faster?I am running 5300rpm

 

[Dhadley]

Re: '90 Johnson GT 150 trim question?

Do you have a jackplate?

 

[spin-a-bait]

Re: '90 Johnson GT 150 trim question?

not yet but I plan to get one

 

[Dhadley]

Re: '90 Johnson GT 150 trim question?

Good idea!<br /><br />Once thats on, test with the existing prop and update your baseline. Remember -- 1 change at a time. <br /><br />We assume you have a 60 degree 150 looper, right?

 

[spin-a-bait]

Re: '90 Johnson GT 150 trim question?

whats that?

 

[Dhadley]

Re: '90 Johnson GT 150 trim question?

Whats the model number of the 150?