how to bench run?

[RichardNaugle]

hi guys i have a question about test running the engine off the boat. hiow do you do it? i recently bought a 1976 135hp johnson and was told it runs.. now i don't have anty controls for it yet so is it possible to mount it on a stand put a set of water muffs on and run it? thanks for any help on this

 

[Daviet]

Re: how to bench run?

If you don't have the electrical harness attached to it, hook up a remote starter switch to the solenoid, hook up a gas tank, pull the choke manually and hit the starter switch. Don't rev it up past about 1500 RPM with no load on the engine. I would remove the prop for safty reasons. The only way to shut it down is to choke it down till it quits.

 

[HighTrim]

Re: how to bench run?

Dont forget a battery in that mix too

I built a test stand for testing motors, with built in key switch, solenoid, and test leads for various magneto/cutout switch variables. Although a bit overkill for one motor.

 

[cdn-pk]

Re: how to bench run?

High Trim... That is Awesome!!! i'm gonna have to build one now!

 

[HighTrim]

Re: how to bench run?

High Trim... That is Awesome!!! i'm gonna have to build one now!

It was either build that or vaccuum the house. You see what I picked.

 

[boobie]

Re: how to bench run?

For a 135 hp just make sure your test stand is built sturdy enough.

 

[levi_tsk]

Re: how to bench run?

YEAH!! if it were me id got the welded stand route for a v6 but not everyone has access to a welder either...

 

[samo_ott]

Re: how to bench run?

Welders are cheap. Harbour Freight sells em for like $100 or so...

 

[levi_tsk]

Re: how to bench run?

having tried to weld with one of those $100 flux core MIG guns before i dont think id have a 400LB outboard hanging from the welds they make -just doesnt burn hot enough .... now they have a stick machine thats pretty nice for 250 AND you could hook a tig rig up to it if you had a bottle of argon if you wanted to get really fancy

 

[RichardNaugle]

Re: how to bench run?

Thanks for the tesponse guys. One queztion though dont i need to run another power brsides the one to.the starter solenoid

 

[RichardNaugle]

Re: how to bench run?

Nice job on the stand. Was planning on welding one up.oit of 1 1/2 x3 square tubing myself

 

[Daviet]

Re: how to bench run?

No, just pwer up the solenoid. The engine does not need external to power the ign system, it does that by itself.