exhausts??
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New User
Joined: Jul 2009
Posts: 21
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exhausts??
whats everyone runnin for exhaust?? straight pipes? muffler? and what size?? this question is for the 7.3 non turbo crowd! thanks!!
i did a straight pipe on my truck today and at high rpms it sounds like ****! so some input would be great! thanks guys!
i did a straight pipe on my truck today and at high rpms it sounds like ****! so some input would be great! thanks guys!
Postmaster
Joined: Apr 2009
Posts: 4,086
Likes: 1
From: Malahat/Cowichan Valley
a slim inline muffler or glass pack has been around for awhile. As for size, non turbos cant handle the huge straight pipe exhaust. mine is three with muffler. I have a large muffler on and it is silent, then engine makes way more noise. That solves my debate about cutting the muffler off and going straight pipe. i dont want it sounding like a gasses with a bad muffler problem hahahaha!
Postmaster
Joined: Apr 2009
Posts: 4,086
Likes: 1
From: Malahat/Cowichan Valley
get one of the thin round ones that is real slim, not the big typical oval ones. The slim ones take the edge off and give the growl and none of the chattery crap that glass packs give. That is why people would mix oil and gas in a 50 50 mix then dump it in the glasspack, let it soak forawhile then light it on fire to "burn it out". Makes them sound better i guess. Oh well.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
3" or 3.5" from the Y back, including Y modification to increase it's flow. The Y is a known restriction.
Your choice on mufflers, but you will want something, straight piped N/A'a are pretty noisy.
It also needs to be designed for Diesels, not gassers!
IMO Glass Packs are garbage!
-Enjoy
fh : )_~
Your choice on mufflers, but you will want something, straight piped N/A'a are pretty noisy.
It also needs to be designed for Diesels, not gassers!
IMO Glass Packs are garbage!
-Enjoy
fh : )_~
Postmaster
Joined: Apr 2009
Posts: 4,086
Likes: 1
From: Malahat/Cowichan Valley
3" or 3.5" from the Y back, including Y modification to increase it's flow. The Y is a known restriction.
Your choice on mufflers, but you will want something, straight piped N/A'a are pretty noisy.
It also needs to be designed for Diesels, not gassers!
IMO Glass Packs are garbage!
-Enjoy
fh : )_~
Your choice on mufflers, but you will want something, straight piped N/A'a are pretty noisy.
It also needs to be designed for Diesels, not gassers!
IMO Glass Packs are garbage!
-Enjoy
fh : )_~
Straight Garbage and sounds like
Senior User
Joined: Feb 2009
Posts: 116
Likes: 0
From: Washington
I put a 3" with a flow master on my 7.3 non-turbo. I also had the Y replaced with a custom piece. As said before make sure you replace the Y.
The truck is not loud unless I get on it or pulling a load and even then its not very loud. My 5.0L gasser with dull glass packs was louder.
It also dropped the EGTs about 100 degrees.
The truck is not loud unless I get on it or pulling a load and even then its not very loud. My 5.0L gasser with dull glass packs was louder.
It also dropped the EGTs about 100 degrees.
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Senior User
Joined: Mar 2008
Posts: 368
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From: Jupiter
I plan on going to 4" and modfy the y to 3" and run a magnaflow diesel muffler. they have them on ebay for like 100
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Posting Guru
Joined: Nov 2008
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YOU WILL NOT REGRET STACKS !!!! might wanna build somethin like a guard for em tho so stuff doesnt slide into them in the bed
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
What he was meaning is to protect what ever is in the bed.
I have seen a couple lunch boxes, a water cooler and a few tool boxes ruined when they slid against the stacks or cross over pipes.
Also saw a couple bales of straw smoldering after they slid up against the cross over pipe.
They get rather hot while running down the road.
Pull a big hill with a load, don't even think about touching them for a while, 7 or 8 hundred degrees will fry skin instantly.
I have seen a couple lunch boxes, a water cooler and a few tool boxes ruined when they slid against the stacks or cross over pipes.
Also saw a couple bales of straw smoldering after they slid up against the cross over pipe.
They get rather hot while running down the road.
Pull a big hill with a load, don't even think about touching them for a while, 7 or 8 hundred degrees will fry skin instantly.
Postmaster
Joined: Apr 2009
Posts: 4,086
Likes: 1
From: Malahat/Cowichan Valley
so would a muffler shop be able to fab up this new y needed. mine is the old restricted one. Chop shop style or are they sold off the shelf?
Senior User
Joined: Feb 2009
Posts: 116
Likes: 0
From: Washington
My Y was built at the shop. They cut out the original Y and used a large pipe to fit over the two original pipes, then transitioned to a 3" making the Y about 10" long. The transition is more or less a solid V shape.