Should the prop be off the motor when running in a tank?

[59 Fatty]

I am going to test the engine this weekend. I am going to have the lower unit submerged in a trash can. Do I need to take off the prop? and I am also going to seafoam it. I thought that I'd put some in the trash can water and some in the fuel mix. What are the pros and cons of seafoam?

 

[nwcove]

Re: Should the prop be off the motor when running in a tank?

Prop on, no seafoam in the water.

 

[Chris1956]

Re: Should the prop be off the motor when running in a tank?

That fatty will empty that trash can is a few seconds, if you put her in gear and rev her up. I recommend fast idle, in neutral while treated fuel is burned by motor. Let her sit a day and then you will need to water test to achieve full effect of treatment.

 

[59 Fatty]

Re: Should the prop be off the motor when running in a tank?

I understand thank you for the advice, again. I should run the engine with the sea foam about fifteen minutes right? And the water test is the same as sea trial or actually in a lake or river where I can do maneuvers and wot. Cool stuff like that!!