Run with no belt?

This might be a stupid question, but can I run the car for a few minutes with no serpentine belt without doing any harm?

I put on a new smaller crank pulley and want to make sure it is running smooth without any wabble.

(2003 Mustang GT)

Thanks!

As long as it's cold, it won't hurt anything.
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That's what I thought... just wanted to double check. Thanks.

Here I go with my 289 stories again... [img]/phpBB/images/smiles/icon_rolleyes.gif[/img]

When I snapped a rocker stuf on my old 289 turning 7 grand (them suckers'll rev like mad, even stock... just takes a while to get there) I threw on a old pair of open chamber 302 heads to get it running again.

Forgot to add coolant. Oops! Didn't realize it until over a week later. Double oops! That was back when I was driving over 500 miles/week (mostly highway). Triple oops!! [img]/phpBB/images/smiles/icon_eek.gif[/img]

I thought it was just going from 53.5cc closed chambers to 63cc open chambers that made it gutless. I just shrugged it off when it had a top speed of 75-85 MPH depending on if I was going downhill and had a good tailwind. Uphill was worse!

Oh, did I mention when I put the intake back on I broke the sending unit and couldn't get the remains out so I didn't bother putting a new one in?

So anyhow I went thorugh a couple tanks of gas cruising down the Atlantic City Expressway WOT and doing 75-85 MPH with no coolant. Engine always acted like it wanted to die when I stopped. I'd have to feather the gas for the first couple minutes after coming off the highway.

Finally one day cruising along with my right foot planted firmly on the floor it hit me 'Gee, did I ever put coolant in this thing??' Well, I pulled over and the radiator was bone dry!! [img]/phpBB/images/smiles/icon_eek.gif[/img] I poured my water bottle in there and figured that ought to be good enough if it's gone all this time without anything.

Got off at the next exit and got some water to fill it. Wow, what a difference that made! The thing purred like a kitten and had a top speed just over 100 MPH, though I only cruised around 75-80 after that.

Now I did have my belts on, but I don't think the water pump was doing much of anything. [img]/phpBB/images/smiles/icon_lol.gif[/img] I don't know how the new mod motors are as far as brutal durability and longevity, but that 289 still ran great and had 100 PSI on the dot in each cylinder when I sold it with over 202,000 miles on the original engine. Not bad I say!

Running an engine without the water pump turning should be fine for a brief period, especially if you have coolant in it.

Wow... that's amazing! It won't be running that long at all... maybe 30 seconds?

It'll probably throw 20 codes at me...

Alternator isn't charging
Water pump isn't pumping adequately
A/C isn't idling properly
Serpentine belt tension low
Hood open too often
etc...

[img]/phpBB/images/smiles/icon_tup.gif[/img][img]/phpBB/images/smiles/icon_tup.gif[/img][img]/phpBB/images/smiles/icon_tup.gif[/img]Now that was a funny ass story!!! I could not stop laughing. Those 289's are bullet proof...they don't build them like they use to.
Ras Daniel [img]/phpBB/images/smiles/icon_cool.gif[/img]

HEREIS YOUR SIGN!!!!!!!!![img]/phpBB/images/smiles/icon_rolleyes.gif[/img][img]/phpBB/images/smiles/icon_rolleyes.gif[/img][img]/phpBB/images/smiles/icon_rolleyes.gif[/img][img]/phpBB/images/smiles/icon_rolleyes.gif[/img]

Stories like that warm my heart[img]/phpBB/images/smiles/icon_lol.gif[/img]
Gotta love the 289's[img]/phpBB/images/smiles/icon_tup.gif[/img]
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Un-friggin-believable [img]/phpBB/images/smiles/icon_eek.gif[/img]
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It won't matter if you have coolant in there or not with a serpentine belt. Without the belt, the water pump doesn't spin.
It won't be long before the engine overheats without the belt.
You MIGHT get away with it for about 5 min....if you're lucky

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