Max RPM 1992 Johnson 60hp

[Cubman]

I have a 1992 Johnson 60hp 3-cyl (56ci) J60TTLENE that I need a prop for. Should I pitch to 5500rpm or go higher? I am looking for the best performance without sacrificing reliability. Also, any suggestions on what pitch to start with? 16' aluminum flat bottom, 1000 pounds total weight on a normal day, 2.42:1 lower unit ratio. Thanks

[Mark Poole]

Since the boat weighs 1000 pounds I would prop it to turn around 5700 to 5800 with a light load. That way when it has some load in it the motor will not be grunting.

[Cubman]

Thanks Mark. Will I be alright to run it wide open with a light load for extended periods of time (10-15 minutes), or is running over 5500 not a good idea?

[Powerabout]

the pak limits at 6700 so 5500 not going to be a problem

[Cubman]

Thanks powerabout. I am not familiar with the work pak? Is it an acronym?

[Powerabout]

yes its slang for pack meaning the powerpack of the ignition system.
Older engines had no rev limit built in and the newer ones do