i got my car runing for 45 mins then water was coming out the header seal why ?

 

A lot of water, or just a little?

If it's a little water (a few drops) then it's probably normal. Condensation is a normal byproduct of combustion. If it's great gallons of water, the you are probably burning coolant. Does the coolant level drop?

 

yea the coolant level drops

 

Then you have a problem.

With a COLD engine, remove the radiator cap, top up th coolant level and then start the car. Walk around to the front of the car and rev it using the throttle body. Do you see a steady stream of bubbles coming from inside the engine that increases violently as the car is revved? If yes, then you have a coolant seal compromised by either a failed seal or a cracked/corroded iron. The only cure is to rebuild the engine.

 

dam the eng was just rebuild

 

It's possible that a coolant seal was improperly installed (grounds for a warranty check if you outsourced the rebuild) and thus there should be little damage to the engine components if you take care of it sooner than later.

 

Yep, what he said. Take it back to the rebuilder and have them look at it. Don't drive on it or let it sit because the innards will corrode.

 

its never moved its got 0 miles on it its very hard to start only got it runing 2 times

 

The seal could have shifted a bit upon re-sealing the engine. Damn

 

o yea i am the builder my frist time i fucked it up i will what will need now can i use some of the old stuff ?

 

what is this from bad ROTOR HOUSINGS i think what i think what i used was no good i just going to get PORTED & POLISHED ROTOR HOUSINGS with water jacket mod

 

A cracked or improperly sealed housing would do this, too. I guess I assumed you used good parts for the build.