225 rebuild

Started up a 225 v6 rebuild a couple times for a very brief period of time without any water in it. Just wanted to make sure everything worked before filling it with coolant. I'm getting a large amount of what must be condensation out of the exhaust system. Is this normal, water actually drips from the muffler. Whats going on?

 

Blown head gasket come to mind if it does it even after warm up

 

The dripping water comes from the exhaust, usually if its a fiberglass filled muffler. It's not the motor.:v6:

 

There's no coolant in the engine so I don't see a blown head gasket being the cause.

 

Yep, on a (new or used) muffler once there is carbon build up of any kind you wil have moisture no matter what. Carbon is a huge magnet for moisture and once the heat starts to build in the muffler the moisture will be blown out.

 

C'mon guys I said usually as fiberglass has a huge area for condensate to form on. Didn't say it wouldn't happen on metal too. Just wanted to remove any worry about a blown head gasket.

 

this is normal. my 225 has just shy of 700 miles and there's still condensation. i think its just the nature of the beast:v6:

 

Patrick hit it on the head. Winter in Washington, cold engine and pipes, humidity. Introduce hot exhaust gases and Tadaaa. Condensation. Look at the tail pipe on the other vehicles when first started. You will see this on any car or truck. It's just condensation. After the exhaust system gets hot enough, it will stop.

 

yep condensation, wifes car does it, my van does it, my truck does it, some are worse than others but they all do it. nothing to worry about

 

I'll bet if you look water drips from the exhaust of all of your rigs. Its a by product of combustion in humid areas.

 

Regardless of environment, water (H2O) and carbon dioxide (CO2) are formed with normal complete combustion of gasoline {C8H18} and oxygen (O2).
How many remember hydrocarbon chemistry?
C8H18 + 12.5 O2 ---> 9 H2O + 8 CO2
The temperature will be a factor if the water exits the tail pipe in liquid or gas form.
BTW, carbon monoxide (CO) is due to incomplete combustion (or not enough O2) to complete the above formula.