I have a Johnson 70 two stroke on my 16 foot Cajun. It runs wide open about 40mph. To cover the lake from one end to another running a straight line, it obviously takes me longer than a boat with a bigger motor like a 250. Those guys don't appear to run wide open all the way across. I usually run wide open and then back off to about half throttle every couple minutes. Will it blow up if I stay on it wide open? This is my first bass boat so I don't know??? I've had it since January this year and the motor is perfect. Strong and excellent compression. Motor is either a 1989 or a 1995. Guy couldn't remember when I bought boat from him. Boat is a 1989. He put another motor on it. Original had a crack or something.

If it's gonna break it's gonna break. Put the hammer down brother!

I guess what I'm saying is if it can handle wide open for part of the trip it can handle it the rest of the way. Is it oil injected or do you mix?

It is mixed in the gas tank. 50:1

It had been run WOT dozens of times for 3-5 minute increments since January. Good pee line, never bogs, never sputters, no excessive smoke (other than sometimes on initial start up), sounds like a symphony of horsepower. :-)

If it blows, the running it at WOT alone won't be the cause. You can run it WOT all day long and won't hurt it. A dirty carb, bad ignition system, vacuum leak, etc can cause one to ruin your day but a two stroke motor in good condition has no problems being run at WOT for hours.

If it blows, the running it at WOT alone won't be the cause. You can run it WOT all day long and won't hurt it. A dirty carb, bad ignition system, vacuum leak, etc can cause one to ruin your day but a two stroke motor in good condition has no problems being run at WOT for hours.

Thanks BK! Just tuned it up when I got it. Plugs, cleaned carbs, fuel lines, fuel filter, bulb pump, wiring, adjusting the fine tuning, etc.

Like I said it runs like a champ. Just wondered if it was alright. But I guess it's like a big "machine" and designed to run. ;-)

If it blows, the running it at WOT alone won't be the cause. You can run it WOT all day long and won't hurt it. A dirty carb, bad ignition system, vacuum leak, etc can cause one to ruin your day but a two stroke motor in good condition has no problems being run at WOT for hours.

Yup. If you have oil mixed correctly and water is moving through it to keep the temp down it will run at WOT all day.

:-)

WOT is what 2 strokes are made for just as diesels are made to run mid range for long periods of time.So many times i have bought weedeaters brand new that didnt run at yard sales for less then 10$ the most common problem was a spark plug fouled up from not bein ran hot.just as it should.oooo and fresh gas is a must not over a few days old even.And the mix is gotta be perfect.

Hold er W

Pin it to win it

Two things I lived by when I rode dirt bikes.

WOT is what 2 strokes are made for just as diesels are made to run mid range for long periods of time.So many times i have bought weedeaters brand new that didnt run at yard sales for less then 10$ the most common problem was a spark plug fouled up from not bein ran hot.just as it should.oooo and fresh gas is a must not over a few days old even.And the mix is gotta be perfect.

^^^^gold^^^^

WOT is what 2 strokes are made for just as diesels are made to run mid range for long periods of time.So many times i have bought weedeaters brand new that didnt run at yard sales for less then 10$ the most common problem was a spark plug fouled up from not bein ran hot.just as it should.oooo and fresh gas is a must not over a few days old even.And the mix is gotta be perfect.

 

 

^^^^gold^^^^

 

Let's call it silver instead.

 

WOT is fine so long as your RPM's aren't past the red-line limits of your motor.  #1 reason to always have a working tachometer!

True!