straight pipe 7.3
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Junior User
Joined: Oct 2008
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From: nowhere missouri
straight pipe 7.3
ok so i have a 94 turbo diesel.. and i want to get a little better milage along with a better sound, if i cut the muffler out i heard that in the winter you can warp valves if you dont let it cool down for a long time... any pointers? (i also heard that i should get a pyrometer, anyone know where to find a guage kit for one??) thanks
New User
Joined: Jan 2008
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I have an 04 6.0 powerstroke that has been straight piped since 1,000miles. It has 51,000 on it and never had any problems with it being straight piped. I also took the Cats off. But with yours being a 94 i don't think there is any Cats. As far as guages goes. There are some on links on this website to buy from.
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Joined: Mar 2008
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unless you are pulling alot with it there really is no reason for the pyro. as for the straight pipe and warping the valves i always let my 7.3 idle for about 30 seconds before shutting it down it has had a straight pipe for 150000 miles now and no problems
Senior User
Joined: Jun 2002
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I've heard of warping valves or damaging valve seats on the old IH gas-start diesels if you don't switch to gas before shutting them down, but those engines went the way of the dodo sixty years ago and never saw on-highway applications.
It is good practice on any turbocharged diesel to let it idle for up to a few minutes before shutting it down to let the exhaust wheel in the turbo cool down, else you run the risk of damaging the turbo's oil seals and bearings. This applies to everything from turbo diesel Volkswagens to multi-thousand horsepower diesel monsters, regardless of how hard it's been worked.
It is good practice on any turbocharged diesel to let it idle for up to a few minutes before shutting it down to let the exhaust wheel in the turbo cool down, else you run the risk of damaging the turbo's oil seals and bearings. This applies to everything from turbo diesel Volkswagens to multi-thousand horsepower diesel monsters, regardless of how hard it's been worked.
Posting Guru
Joined: Mar 2007
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From: hillsborough nj
I've heard of warping valves or damaging valve seats on the old IH gas-start diesels if you don't switch to gas before shutting them down, but those engines went the way of the dodo sixty years ago and never saw on-highway applications.
It is good practice on any turbocharged diesel to let it idle for up to a few minutes before shutting it down to let the exhaust wheel in the turbo cool down, else you run the risk of damaging the turbo's oil seals and bearings. This applies to everything from turbo diesel Volkswagens to multi-thousand horsepower diesel monsters, regardless of how hard it's been worked.
It is good practice on any turbocharged diesel to let it idle for up to a few minutes before shutting it down to let the exhaust wheel in the turbo cool down, else you run the risk of damaging the turbo's oil seals and bearings. This applies to everything from turbo diesel Volkswagens to multi-thousand horsepower diesel monsters, regardless of how hard it's been worked.
) but if i'm just driving around normally it'll cool down enough by the time i pull into my driveway and there's no need to let it idle for more then 30 seconds or soedit: warping valves... lol.... don't believe that... at all... and now that i actually read your post and realized you're not doing any other performance mods, as long as you do everything the same as before you take off the muffler the truck will run better, cooler, and more efficient then it used to, you'll have LESS of a chance at breaking anything with the muffler removed
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