Classic AquaSport

Aquasport Mechanicals - things that need a wrench, screwdriver or multimeter => Engines & engine woes => Topic started by: adnan.begic1 on April 25, 2020, 08:06:10 PM

Title: Performance on 225 ex with 225 yamaha 4 stroke?
Post by: adnan.begic1 on April 25, 2020, 08:06:10 PM: I have a 95 225 explorer with a 225 yamaha pushing it, hoping someone else has this setup so i can get their performance numbers. I dont think my boats running quite the way it should, thanks!
Title: Re: Performance on 225 ex with 225 yamaha 4 stroke?
Post by: boatnamesue on April 26, 2020, 10:57:02 PM: Find the spec rpm range at WOT for your model/year engine. Then compare your rpms at WOT. You should be at or near top end of range.
Title: Re: Performance on 225 ex with 225 yamaha 4 stroke?
Post by: adnan.begic1 on April 27, 2020, 07:06:16 PM: Cant check rpms, dont have a working gauge, just received a mew gauge and cant get it to work properly so until i find that out i wont really know what it is... thinking maybe a mix of fuel delivery issues and prop size.
Title: Re: Performance on 225 ex with 225 yamaha 4 stroke?
Post by: boatnamesue on April 27, 2020, 07:50:00 PM: Rpms are the most valuable non-diagnostic metric when assessing engine performance. Evaluating prop pitch cannot possibly be done correctly w/o knowing rpms. Getting your new rpm gauge working should be your priority #1.
Title: Re: Performance on 225 ex with 225 yamaha 4 stroke?
Post by: RickK on April 27, 2020, 08:06:11 PM: Quote from: adnan.begic1 on April 27, 2020, 07:06:16 PM
Cant check rpms, dont have a working gauge, just received a mew gauge and cant get it to work properly so until i find that out i wont really know what it is... thinking maybe a mix of fuel delivery issues and prop size.
Yeah you can't just buy any Yammy gauge - I had the same problem when I bought one.
Title: Re: Performance on 225 ex with 225 yamaha 4 stroke?
Post by: adnan.begic1 on April 27, 2020, 11:41:55 PM: How do i know what will work... i honestly dont even care about the trim sensor bc i can visually see and know where my trim is at, but i hope the oil pressure and overheating sensors are working on the gauge. Any way to know? When i hooked it up and turned the key switch, they blink once or twice and go away, does that mean that its reading right, or not at all.
Title: Re: Performance on 225 ex with 225 yamaha 4 stroke?
Post by: RickK on April 28, 2020, 06:13:03 AM: I would google for an owners/service manual for the motor and look in the owners manual for the engine and it should tell you the model gauges to use. I bought mine from a surplus place and had to return it because it wasn't compatible.