Exhaust exiting in front of rear wheel

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Exhaust exiting in front of rear wheel:

Who has it and what are the +/- about doing this. All I can think of is for a plus it would be cheaper. For negatives it may be grubby rear tire and rim, louder, and smoke closer to cab when wife takes forever getting in. I like the thoughts of it, but I would like to hear from some of you that have already done this.

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John McEachern
Fort St John B. C. Canada
1998 12v, 4X4, QC, auto w/tc switch, air, tilt, cruise, 3. 55 gears, TST #6, Isspro boost/pyro/transmission gauges, BD VB&TC, CC industries headache rack and rails, JVC KD-SX949 Cd player, forest green,
Kelly Safari MSR 285 75 16, K&N airfilter.

 

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John,

I have a custom 4" exhaust..... exits in front of the rear tire. I love this setup, I give credit to Briar Hopper. I got to see his setup in Townsend TN. during one of the Southeastern Turbo Diesel Registry get togethers, man it looked good and I was hooked.

I have a 4" Walker muffler in the stream, so the sound is deep, not obnoxious. I have noticed some sooting of the rear wheel though, about on par with the disk brake dust on the front. I do know turbo cool down time before shut off has been decreased considerably. The EGT’s seem to be around 100 degrees cooler, maybe the 4” and no hard bends going over the rear axle. I haven't had a problem with fumes, though I don't have the passenger door open that often.

Total cost for my system including parts and labor was $250. I hope this is of help... .....


Gary


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01' 2500 - QC/SB, ISB w/Auto, 4X4, 3. 54 LSD, Solid White - Westin Bars, A. R. E. Cap, Bug/Vent Sheilds, K&N Air Filter, Autometer Ultralites Boost/EGT/Trans, Custom 4" Exhaust.


[*]TU Member
[*]NRA Member

[This message has been edited by RollCast (edited 12-18-2000). ]

 

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Think about this one guys. I just sold my old stock 3" exhaust to a fellow Rammer who is going to use it to make duals for his Cummins. Seems like a good idea to me,two three inch pipes must equal at least a 5",cheap way to go also.

 

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Sounds good so far, except for the soot, I'm getting new rims for Christmas and don't want to get them dirty! I've been good. #ad

 

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I like mine... if your tires (including spare) are a bit oversize, there's no problem with tire/pipe contact, whereas a factory, or same-shape aftermarket system can be tight... . there's a photo of mine in a different post entitled "pictures of my truck (first attempt)" over in "12-valve"--rm

 

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I just did mine that way 3 weeks ago with a Walker 21471. I wouldn't want it any louder!I stuck the pipe out about 2" past the tire hoping not to soot up the wheel. I haven't driven enough to tell yet! BTW... two threes has the same cross section area as one 4 1/4" pipe. Take a framing square and measure from one 3" mark diagonally to the other 3" mark on the inside scales. Old tinners trick - based on the hypotenuse of a right triangle!

 

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Rich,

I like the looks of the exhaust from the pic that Katdiesel put up. Does that tire get much soot on it? I am not to concerned about tire exhaust contact, because whoever modifies mine better not come that close to the tire! #ad

 

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I wish I had done mine this way. When I got my 4" installed at Diesel Dynamics (out the rear), they were out of the chrome turn down tips so it took a month or so to get mine installed. After getting it on I noticed sounds that weren't there before. At highway speeds, it seems kind of like exhaust splatering as it makes that last turn at the down tip. I've gotten used to it but someday will go for the infrontoftherearwheel... ... .

 

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When I made my 5 inch system . . I went the extra effort to make it go over the axle. . sorry guys but the before the tire exit reminds me of the 70's hippey van #ad

 

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Originally posted by illflem:
Think about this one guys. I just sold my old stock 3" exhaust to a fellow Rammer who is going to use it to make duals for his Cummins. Seems like a good idea to me,two three inch pipes must equal at least a 5",cheap way to go also.

To get the same cross sectional area as a 5", you'd need (2) 3 1/2" pipes.

Pete



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'97 2500 CC 4X4 5spd Sport
'83 K5 Blazer 350 TBI (ex 6. 2), 39. 5 TSLs, 3" lift, Dana 60/GM 14 blt, Detroits

 

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Originally posted by QuadDoorRam25004x4diesel:
When I made my 5 inch system . . I went the extra effort to make it go over the axle. . sorry guys but the before the tire exit reminds me of the 70's hippey van #ad

I was born in the 70's so I think I might try it in front of rear wheel. #ad
If I don't like it I guess I can always make it longer.

SOOT on rear wheel?? Anyone? #ad

 

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I have 6" exiting in front of the rear wheel and the only thing is that I have to clean that wheel twice as often as the other three. Sound is intense though!

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Chris Timochko
AUTO WURKS DIESEL R&D TEAM
1997 5sp 4X4, Espar Heater, A. W. D. HX40 turbo, ATS 3pc Manifold, BD 4" Brake, Marine Compression, A. W. D. Custom Tuned Injection Pump, A. W. D. Intercooler, A. W. D. 370B Injection Nozzles, Delivery Valves, Governor & AFC Spring Kit, Psychotty Air, A. W. D. Water Injection, NOS Diesel Kit, A. W. D. 6" Chrome Exhaust System, BD No Smoke Valet Switch, McLeod Dual Disc Clutch, Mag-Hytec Rear Cover, Cummins Chrome Kit, Optima Red Tops, Hadley Bully Horns, Hurst Line Loc, Goodyear Wrangler AT/S 305/70/16s.
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Project U96 - 1996 3500 2WD racer. A. W. D. Marine Ultra Low Compression, A. W. D. Teflon-coated Pistons, A. W. D. High Lift Camshaft, Ported and Honed Cylinder Head, Intake and Exhaust manifold; A. W. D. HX40 Turbocharger, ATS 3pc Exhaust Manifold, A. W. D. Water Injection, A. W. D. Custom Fabricated Fuel System, Race Spec A. W. D. /BD P7100 Injection Pump, A. W. D. Custom High Flow Fuel Injection Nozzles, BD Auto transmission and Custom TC, Weld Draglites, Goodyear Eagle Drag Slicks, 5" Single Stack Through The Bed, Mag-Hytec on Rear and Transmission.

 

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Originally posted by Swamp Donkey:
Rich,

I like the looks of the exhaust from the pic that Katdiesel put up. Does that tire get much soot on it? I am not to concerned about tire exhaust contact, because whoever modifies mine better not come that close to the tire! #ad

Soot? I thought that was Cajun spice blackening the hubcap! #ad
--- while I had the star wheel a little too liberal, it was a little untidy. then I cranked it back a bit, and, coincidentally, lost (really, not "lost", but LOST!) one centercap, so I rearranged them. now the soot just goes onto the big black bearing cap, where its not noticeable. another advantage, though, would be less bubbling (backpressure) when launching or recovering a boat at the lake!


70's hippie van, eh? and you see something wrong with this, man? yer bringin' me down, dude!

 

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Didn't the first of the current generation Ferd 150's have the exhaust exit in front of the wheel? If I remember correctly, they moved it behind the wheel the second production year because they had problems with water vapor icing on the wheels in cold weather. Frozen brakes, rusty rims etc.

Steve

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98 QC 4X4
"The Silver Bullet"

 

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70's hippie van, eh? and you see something wrong with this, man? yer bringin' me down, dude! [/B][/QUOTE] I shoulda told you guys am a perfectionist. . kinda a sickness. . but anyway. . I like to keep it lookin factory. . plus I get penty of stares with the Jet-Hot coated 5 inch pipe coming out the back... BNH. . you are correct about the 97 Ford F-150's... we have 2 for our shop and both have that "Nascar Truck Series" front tire exit. JB

 

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I have 4" duals exiting to the side in front of my rear right side tires, slant-cut chrome tips. The down pipe goes into a custom-made "Y" then the pipes run side by side straight down to where they angle over in front of the tires.
yeah, my wheel gets sooty. Who cares? A little windex or 409 & a paper towel shines 'em right up. (supply of said items kept in toolbox) They're definitely attention getting,(especially on a new, all-black truck) and conveniently placed at the right height to smoke & thunder low-riders with their windows down. No turn-down tips on this one. (What for?)

#ad

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Tom
GLTDR B. A. D. Boys
www.lubedealers.com/meers.html

[This message has been edited by Briar Hopper (edited 12-22-2000). ]

 

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#ad


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Nowel/Performance Diesel

 

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How about just having a turndown before the rear axle just after the muffler? Is there a reason why this might not be a good idea?

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'01 ETH/DEE 4x4 QC SLT 3500 4. 10

 

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Its final. Exhaust in front of the rear tire. HVAC's picture was icing on the cake! Hippie van here I come. LOL #ad

 

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Originally posted by HVAC:
#ad

since we're whippin' 'em out, here's mine! #ad

#ad


[This message has been edited by rich m (edited 12-22-2000). ]