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vyvyjim 
Bronze Level
Joined: 11 Sep 2010
Location: WAUKESHA, WI
Points: 146
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 Topic: Chrome exhaust pipe
Posted: 01 Feb 2012 at 12:50pm |
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I see so many tractors with big chrome exhaust pipes and no muffler. Is that mainly for show? Will it add significant horsepower to my gas series IV D17?
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JimD
Orange Level
Joined: 11 Sep 2009
Location: Mounds, OK
Points: 2112
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Posted: 01 Feb 2012 at 3:11pm |
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Unless your current muffle has problems, it will not add HP. Only noise and bling. We sell quite a few of them, but personally, I'm not fond of them.
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Owner of OKtractor.com PM for an instant response on parts. Open M-F 9-6 Central. We have new and used parts. 877-378-6543
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HagerAC
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Joined: 14 Sep 2010
Location: SE MN
Points: 1195
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Posted: 01 Feb 2012 at 5:01pm |
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I personally only really like them on a diesel tractor.
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30+ A-Cs ranging from a 1928 20-35, to a 1984 8070FWA, Gleaner R52
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Ky.Allis
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Joined: 31 Jan 2010
Location: Kentucky
Points: 1020
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Posted: 01 Feb 2012 at 5:14pm |
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Strickly for looks just like on trucks. When you get my age,you will want your tractor to be quiet as possible. Around here there are alot of windshield farmers who have got to have their diesel pick-ups decked out with dual chrome stacks and black smoke boiling out of them. Most of these guys are the younger crowd,but occasionally an older guy with the same set-up--I figure it's the viagra kicking in.
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Gary in da UP
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Joined: 13 Sep 2009
Location: EUP of Mi.
Points: 1885
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Posted: 01 Feb 2012 at 5:36pm |
 JimD wrote:
Unless your current muffle has problems, it will not add HP. Only noise and bling. We sell quite a few of them, but personally, I'm not fond of them. |
Ear plugs and hearing aids in the next aisle over, right, Jim?
Personally I like them on a puller, But in black.
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badjeep
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Joined: 31 Jul 2011
Location: Mt. Hope, KS
Points: 132
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Posted: 01 Feb 2012 at 5:43pm |
On my 200, the chrome stack I got was the same diameter as the stock muffler, I just cut the shell off of the stock muffler and slid it in the chrome stack. Sounds exactly like stock... 
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In the shed- 7020,7060, L2 X (2), CII, WD X (2), 200, 210, 611H, 440, Fiat Allis 345B
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41819
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Posted: 01 Feb 2012 at 5:47pm |
My FD5 as well as my HD4 had chrome pipe , but had below hood muffler with a pipe um through hood , the chrome stack only extended it higher and made for looks. You can buy seconds from many truck places or on line of stacks with the bend you want on the end to either prevent water entry or direct flow.
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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79fordblake
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Joined: 01 Jul 2010
Location: West Kentucky
Points: 827
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Posted: 01 Feb 2012 at 6:08pm |
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Most of the time the dyno shows a slight decrease in HP with a straight stack. I like the looks of the black straight stacks better than chrome. On a working tractor I would run a muffler.
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cwhit
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Joined: 12 Sep 2009
Location: Sigel IL
Points: 988
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Posted: 01 Feb 2012 at 6:48pm |
We have chromes on both our 7020 and 7045.Both needed mufflers and the straight pipe was less than half price. Only bothers the neighbors. Keep the doors shut, A\C on, radio turned up..
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ACFarmer
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Joined: 13 Sep 2009
Location: Ohio
Points: 745
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Posted: 01 Feb 2012 at 6:54pm |
Ky.Allis wrote:
Strickly for looks just like on trucks. When you get my age,you will want your tractor to be quiet as possible. Around here there are alot of windshield farmers who have got to have their diesel pick-ups decked out with dual chrome stacks and black smoke boiling out of them. Most of these guys are the younger crowd,but occasionally an older guy with the same set-up--I figure it's the viagra kicking in. |
I can show you dyno graphs with pickups where a straight pipe helped the horsepower... In my opinion, if you like the sound of the engine, straight pipe it and live it up. But on a stock horsepower tractor theres not really much of a gain, except on the thickness of your wallet because a straight pipe is usually a ton cheaper.
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Making a living farming with and working on Allis Equipment
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acd21man
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Joined: 07 Jan 2010
Location: tn
Points: 831
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Posted: 01 Feb 2012 at 7:07pm |
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well look at it like this a 1993 dodge ton cummins muffler got 22 mpg and straight pipe got 24-26 lol i think it helps
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2 wd 45,2 D-17 diesel/gas 3 pt, 220,d21, 4020,2 4430s used daily http://www.youtube.com/channel/UCudh8Xz9_rZHhUC3YNozupw
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79fordblake
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Joined: 01 Jul 2010
Location: West Kentucky
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Posted: 01 Feb 2012 at 11:23pm |
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There was a write up a long time ago in Old Power Pride magazine and the dyno showed decrease in HP with a straight stack. I can't remember what tractor without digging it out.
A guy on youtube made a video of a B John Deere and it also showed decrease in power with straight stack. The length of the stack also affects HP.
If you have a vehicle that has a very restrictive system then yes maybe going to straight pipes does increase power. But I believe a good muffler(not to restrictive) is best. The engine should have back pressure.
I don't think there is a shop anywhere that will recommend running a straight pipe on a everyday driver. There is a reason why they make performance exhaust systems.
Edited by 79fordblake - 01 Feb 2012 at 11:25pm
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John Sealey
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Joined: 29 Oct 2011
Location: ON. Canada
Points: 83
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Posted: 02 Feb 2012 at 9:21am |
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When a carburetor is jetted it is done with the exhaust and intake filter setup as it would be on the tractor car truck or whatever. If you change anything that affects the restriction in or out you will change the mixture. If you lower the restriction on the exhaust the engine will run lean. Less power on the dyno more mpg. So if more power is what your after you have to rejet the carb after making any changes. Which is just an adjustment on the carb if its like my D14.
Edited by John Sealey - 02 Feb 2012 at 4:01pm
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Goose
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Joined: 07 Oct 2009
Location: Melrose, Wis
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Posted: 02 Feb 2012 at 11:57am |
Okay. Post rethunk! LOL
Edited by Goose - 02 Feb 2012 at 12:07pm
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Boogerowen
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Joined: 23 Apr 2011
Location: Mannford Ok
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Posted: 02 Feb 2012 at 12:05pm |
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Ya might want to re-think your post Goose.....
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5061
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Posted: 02 Feb 2012 at 12:06pm |
HagerAC wrote:
I personally only really like them on a diesel tractor. |
only turbo diesel for me.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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