new engine break in on test stand

[mitchcraft15cc]

Hello, I have finished my engine rebuild and want to run it on a test stand before reinstalling it. My question is can I just attach my garden hose to the water inlet hose at the circulating pump? I have run lots of car engines on a stand, but that was with a closed cooling system and a radiator. I would like to break in the cam and set timing, check for leaks,etc... before its back in the boat. I can make a hose adapter, that is easy. Just wondering if this would supply enough water to keep it properly cooled as it runs @20-25 minutes at a fast idle. Has anyone done this? I seem to think that it should work, as the garden hose has plenty of volume and pressure.

 

[tpenfield]

Re: new engine break in on test stand

Yes, garden hose would be the thing . . .

you can see the garden hose in this video, etc.

 

[Don S]

Re: new engine break in on test stand

Hook the hose to the thermostat housing where the water from your raw water pump hookes up (assuming you have an alpha style drive with the pump in the drive).
Can't give any specifics, have no clue what engine you have.
I never put an engine back on the boat without running it on the floor first.

 

[mitchcraft15cc]

Re: new engine break in on test stand

Thanks for the info guys, it's a 260 merc/ chevy 350

 

[Don S]

Re: new engine break in on test stand

You can just see where you want to hook your hose to in the picture from your other thread.

 

[Bondo]

Re: new engine break in on test stand

Hello, I have finished my engine rebuild and want to run it on a test stand before reinstalling it. My question is can I just attach my garden hose to the water inlet hose at the circulating pump? I have run lots of car engines on a stand, but that was with a closed cooling system and a radiator. I would like to break in the cam and set timing, check for leaks,etc... before its back in the boat. I can make a hose adapter, that is easy. Just wondering if this would supply enough water to keep it properly cooled as it runs @20-25 minutes at a fast idle. Has anyone done this? I seem to think that it should work, as the garden hose has plenty of volume and pressure.

Ayuh,... That'll break-in the cam, but the motor/ rings won't start to break-in til there's a load on it...

Just hook up yer hose to where the water line from the drive normally goes...

 

[FreeBeeTony]

Re: new engine break in on test stand

And you obviously need a belt for the circ pump...........just an observation.............

 

[Speakrdude]

Re: new engine break in on test stand

That wont break in the cam at idle speed....
just sayin.....

 

[mitchcraft15cc]

Re: new engine break in on test stand

That wont break in the cam at idle speed....
just sayin.....

Ok, a little more than an idle, @1800-2000 for 25 minutes. And I know the engine won't really break in until its in the boat and run under a load, but testing it outside the boat first just makes sense as I do not have easy access to lifting equipment to pull the motor again should something not be right. And also it will be completely "dressed" including the alternator and pump drive belt. It's nearly ready to go now, just have to put the carb on it and hook up a battery and fuel tank. I just need the time to get outside, thanks for the input and I will post pictures when it's done.

 

[mitchcraft15cc]

Re: new engine break in on test stand

Got it running today.......... engine running - YouTube

I let it run 25 minutes above 1900 rpm before idling and setting timng. I will adjust carb and idle speed once its back in the boat.

 

[tpenfield]

Re: new engine break in on test stand

Nice sounding engine. you must be syched :thumb:

 

[mitchcraft15cc]

Re: new engine break in on test stand

Nice sounding engine. you must be syched :thumb:

Yeah, just waiting for spring to arrive...lol...

 

[mr300z87]

Re: new engine break in on test stand

I love the sound of a V8 engine, and don't mean to hi jack the thread but I Took a short video of my 68 Plymouth's 383 at the exhaust pipes the other day to give a friend some incentive, thought I would share if the link will work https://www.dropbox.com/s/cub46cm32drh9m6/2013-03-19 19.12.01.mp4 enjoy the sweet sounds of 383 cu mopar big block. Spring cant come soon enough.