anouther '89 GT150 question

[Duck Loads]

Good morning,<br /><br />There seems to be other GT150 people out and about, so I thought I would ask my question. A mechanic told me that my timer base is bad. I do not have any symptoms like cylinders cutting out or missing. My only concern is that I cannot get the revs out of it that I would like. I am running it on a '89 Ranger 375V with a 24 raker prop at about 5000 rpm. Could a bad timer base be liminting the rev's?<br /><br />Thanks a bunch,<br />Duck L.

 

[farginicehole]

Re: anouther '89 GT150 question

D.L.,<br /><br />I have a '89 150XP Evinrude. What is a "timer base"? Mine has the factory aluminum prop, which I believe (haven't looked at it in a while) is a 15" x 19 pitch. I am running it on a '91 Alumacraft Competitor 185CS, which is a side-console walleye style boat. I too only get around 5000 rpm, and it only tops out at just over 40 mph. This seems really slow for a 150 on a boat like that, but what do I know. Top speed doesn't vary much between having just me in the boat or 3 guys and a bunch of fishing gear.

 

[Duck Loads]

Re: anouther '89 GT150 question

Hey man,<br /><br />The timer base is mounted under the flywheel. It is a round black doughnut looking thing with two wire harnesses each of which goes to a powerpack. I cann't believe you're only getting 5,000 rpm with the 19 prop. Sounds kind of funny.<br /><br />Any takers on these low reving GT 150's?<br /><br />Good luck,<br />d.l.

 

[Greg22]

Re: anouther '89 GT150 question

Do a search, Clayton told the exact procedure a time or two on how to check the timer base. Or, pick up a manual it will also provide instructions on how to check the timer base. <br /><br />Good luck.<br />