Hey cool video. I have a 1989 Johnson 70. Is it ok to run them at WOT long periods of time, getting from one place to another? Sorry a bit new to this.
I doubt it; the mounts are designed to absorb vibration at idle. But, "Tommy K." needs to learn to close his mouth while being recorded. He'll look a lot better if he does. Great motor.
@@mikedurhan9941all i do is rebuild these. easy fix though. i run an OMC rebuild shop for 20 years. Can tell almost instantly by how much "wiggle" they have at idle/sloppy they are. Easy to pin and/or shim them to stiffen, but requires powerhead removal and must do the lowers at the same time. cheers! not sure who "tommy k." is?
@@ct1762 Thanks for your thoughts. And I was an OMC dealer/mechanic for 22-years (1983-2005), rebuilding these 3-cyl loopers and occasionally replacing upper and lower mounts in both the older style midsections (up through 1977) as well as the newer midsection with the integral TNT units - '78 and newer. These are my favorite motors, along with the 31 cubic inch "big-block" 25-28-30-35 twin cylinder motors from the late 70's to 2005). Rarely had to replace any mounts on the 3-cyls. However, they did shake a little at idle - not nearly as much as a twin cylinder looper 40-50-55, etc. Tommy K. is the guy who made the video and put it on TH-cam.
Could you help me. I have a 2000 70 hp Johnson and it would not let me pass 11 mph. I’ve changed the fuel pump, fuel filter, spark plugs, fuel line, primer bulb, and it s slow and low power. Can’t get above 20 mph and not on plane. On an aluminum polarkraft bass America
@@ronniebo1 1st start with compression and make sure its got 7/16'' spark on all 3 cylinders. these should be over 110lbs or so cold. no mention of the most important thing: the carburetors! must be clean. if they are and compression is good, check to be sure roll pins on carbs are exactly 90 degrees when at full throttle (motor off of course) and that the timer base moves all the way up to it's stopper under the flywheel.
You word it like it does 70mph, then I see the motor!
Braaaaaaaapppppp
st johns river?
What is the dry weight of the boat?
What size boat did you have?
What was top speed and pitch?
Hey cool video. I have a 1989 Johnson 70. Is it ok to run them at WOT long periods of time, getting from one place to another? Sorry a bit new to this.
Is your engine still alive after a year?
@@noahtkach1415 Yes
@@perkypat2214 After 2 how is the fuel consumption
As long as you want.
Sure. And while you're at it, run your car WOT from one place to another for long periods of time and see how long it lasts.
upper mounts are shot
I doubt it; the mounts are designed to absorb vibration at idle. But, "Tommy K." needs to learn to close his mouth while being recorded. He'll look a lot better if he does. Great motor.
@@mikedurhan9941all i do is rebuild these. easy fix though. i run an OMC rebuild shop for 20 years. Can tell almost instantly by how much "wiggle" they have at idle/sloppy they are. Easy to pin and/or shim them to stiffen, but requires powerhead removal and must do the lowers at the same time. cheers! not sure who "tommy k." is?
@@ct1762 Thanks for your thoughts. And I was an OMC dealer/mechanic for 22-years (1983-2005), rebuilding these 3-cyl loopers and occasionally replacing upper and lower mounts in both the older style midsections (up through 1977) as well as the newer midsection with the integral TNT units - '78 and newer. These are my favorite motors, along with the 31 cubic inch "big-block" 25-28-30-35 twin cylinder motors from the late 70's to 2005). Rarely had to replace any mounts on the 3-cyls. However, they did shake a little at idle - not nearly as much as a twin cylinder looper 40-50-55, etc.
Tommy K. is the guy who made the video and put it on TH-cam.
Could you help me. I have a 2000 70 hp Johnson and it would not let me pass 11 mph. I’ve changed the fuel pump, fuel filter, spark plugs, fuel line, primer bulb, and it s slow and low power. Can’t get above 20 mph and not on plane. On an aluminum polarkraft bass America
@@ronniebo1 1st start with compression and make sure its got 7/16'' spark on all 3 cylinders. these should be over 110lbs or so cold. no mention of the most important thing: the carburetors! must be clean. if they are and compression is good, check to be sure roll pins on carbs are exactly 90 degrees when at full throttle (motor off of course) and that the timer base moves all the way up to it's stopper under the flywheel.