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02-06-2016, 02:39 PM
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#1 |
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Registered User
Join Date: Nov 2011
Location: Port St. Joe Fl.
Posts: 494
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Exhaust Water
Is there suppose to be this much condensation coming from my exhaust when I start my truck? I have to make sure my garage door is open before I start the truck so it doesn't get all over the door.
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02-06-2016, 03:11 PM
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#2 |
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Registered User
Join Date: Apr 2014
Location: Bloomington Indiana
Posts: 1,041
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Re: Exhaust Water
Basically, yes. The primary by-products of burning gasoline, which is composed of a number of different hydrocarbons, are carbon dioxide and water vapor. When the truck is started, the exhaust system is cold, and the water vapor (steam) condenses in the exhaust system. Exhaust flow pushes the condensation to the exhaust exits, where it drips from the exhaust outlets. As the exhaust system heats up, water vapor stops condensing in the exhaust system, and the condensation already in the system gets warmed up and revaporized and exhausted as water vapor.
Lots of things affect how much condensation you will get. How big the exhaust system is will affect it: cats and bigger mufflers and bigger pipes take longer to heat up, and so will condense more and longer. The mixture and state of tune will affect it, in terms of how hot your exhaust stream is from the engine. Whether or not the car was driven long enough last time to warm up the exhaust system enough to clean any condensation out of the exhaust, or if a short trip left water in the system from last time. Also, the bends in the system matter, in terms of whether the condensation gets carried to the outlets or sits in low spots in the system until it can get boiled out. So, it varies, but it can be quite a bit, especially if you let it warm up before you drive away.
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Rich Weyand 1978 K10 RCSB DD. |
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02-06-2016, 09:37 PM
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#3 |
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Registered User
Join Date: Oct 2011
Location: Damon, Tx
Posts: 8
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Re: Exhaust Water
yes.. rich had a very thorough explanation of why the exhaust produces that much condensate out of the pipes.. No worries and drive on!
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02-06-2016, 10:55 PM
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#4 |
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Registered User
Join Date: Nov 2011
Location: Port St. Joe Fl.
Posts: 494
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Re: Exhaust Water
Ok Thanks Guys, I was just worried, It never did this before I swapped Engines
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02-06-2016, 11:09 PM
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#5 |
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Registered User
Join Date: Sep 2007
Location: N.E. Florida
Posts: 500
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Re: Exhaust Water
The short version a by product of combustion. And if your running a catalytic converter it will also produce H2O.
Ken
__________________
1985 IROC Z28 190HP TPI 305,700r4,T-tops,rear trac lock, Black on lite gray, 16in Z28 wheels 2007 Lexus ES350 (wifes) 1984 CJ7 with 1995 HO4.0L MPI, 2 1/2 OME YJ Lift “There is no limit to the amount of good you can do if you don't care who gets the credit.” ― Ronald Reagan |
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02-07-2016, 10:54 AM
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#6 |
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Registered User
Join Date: Nov 2011
Location: Port St. Joe Fl.
Posts: 494
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Re: Exhaust Water
Just headers and dual Flowmaster mufflers.
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02-07-2016, 11:19 AM
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#7 |
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Registered User
Join Date: Apr 2014
Location: Bloomington Indiana
Posts: 1,041
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Re: Exhaust Water
The Flowmasters won't hold any water in the cans, they'll blow it all through.
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Rich Weyand 1978 K10 RCSB DD. |
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02-07-2016, 11:34 AM
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#8 |
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Registered User
Join Date: Sep 2007
Location: N.E. Florida
Posts: 500
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Re: Exhaust Water
The short version. What your seeing is normal, your engine set up is working very good. If you had a air/fuel gauge the readings would be very good.
Ken
__________________
1985 IROC Z28 190HP TPI 305,700r4,T-tops,rear trac lock, Black on lite gray, 16in Z28 wheels 2007 Lexus ES350 (wifes) 1984 CJ7 with 1995 HO4.0L MPI, 2 1/2 OME YJ Lift “There is no limit to the amount of good you can do if you don't care who gets the credit.” ― Ronald Reagan |
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