Do I really need the tailpipe? - Ford Powerstroke Diesel Forum
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post #1 of 28 Old 02-21-2010, 12:48 PM Thread Starter
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Do I really need the tailpipe?

Getting ready to order my new exhaust system and a thought popped into my head. Why not just put a turn down right after the muffler and delete the tailpipe altogether. Would get rid of a couple of feet of tail pipe and almost all of the bends. Plus, I could probably just order the pieces so that I could mate up to my Banks down pipe and not have to swap that out. Now that I have my brilliant idea....can you more experienced guys give me the reasons it cant be done. There must be something that I am overlooking.

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1995 F350 CC LB - Pretty much stock
3" Banks down pipe
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post #2 of 28 Old 02-21-2010, 12:55 PM
duct tape & zip ties

 
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Quote:
Originally Posted by NMDually View Post
Getting ready to order my new exhaust system and a thought popped into my head. Why not just put a turn down right after the muffler and delete the tailpipe altogether. Would get rid of a couple of feet of tail pipe and almost all of the bends. Plus, I could probably just order the pieces so that I could mate up to my Banks down pipe and not have to swap that out. Now that I have my brilliant idea....can you more experienced guys give me the reasons it cant be done. There must be something that I am overlooking.
Most state laws say exhaust must exit the rear of the vehicle. The big thing is exhaust gas getting into the cab. You really won't be saving any money. I would go ahead and run the full exhaust.

You won't have any problems while moving. But when you stop in traffic you will start smelling exhaust. Which if you are smelling exhaust you are inhaling carbonmonoxide.


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2004 6.0 destroyed by contaminated fuel

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post #3 of 28 Old 02-21-2010, 01:05 PM Thread Starter
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See...that is what I am talking about. I knew there would be something. Did not even think about the LAW. I *did* think about the fumes....just figured that the rear axel was fair enough back to not be an issue. Gonna look into the law part just to make sure. You are right that it would not save much money.....would just be a bit different. Like me...short bus different.

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1995 F350 CC LB - Pretty much stock
3" Banks down pipe
LineX....best $450 I've spent yet.
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post #4 of 28 Old 02-21-2010, 01:21 PM
shaking things up

 
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most say it has to exit behind the passanger compartment which would be the cab so you might be alright there i say go for it if that is what you want

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post #5 of 28 Old 02-21-2010, 07:58 PM
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i wouldnt worry about the law being a problem since all 4 our duramax dumps have exhausts that dump ot right past the cab from the factory, and some f150s in the early 2000s came with the exhaust right before the rear tire. Just be careful that you dont point it right at the tire or it will heat up. as long as its past any passenger compartment your fine. i was considering doing this on my dually because tailpipe look weird on duallys and they would always melt my mudflaps.


2016 F450 6.7L XLT 4x4Dump, bone stock
1994 F250 7.3L XLT 4x4 ZF5 , Centurion, 4" Lift, 6637, Gulf Coast Bypass Filter, Big fuel tanks, dana 60 swap, No longer dually
1997 F350 7.3L XLT 4x4Dump, E4OD, 4 in exhaust, TS 6 position, 3/8 Trans line+external filter
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post #6 of 28 Old 02-22-2010, 06:06 AM
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I had mine like that before. toght over the axle dump.... looks great and no issues.... not even at idle. it was far enough back

04.5 LLY DURAMAX. EFI, AIR, FUEL, TRACTION AND MORE! POWERSTROKE SLEEPER SLAYER!!
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post #7 of 28 Old 02-22-2010, 11:06 AM
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my 3.5"side dump

my current 5" side dump

97 f250 extended cab longbed 4x4
electric fuel, 5"pipe, 6pos chip
d60 swap 3" lift 315s
fresh e4od-blown
Mike
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post #8 of 28 Old 02-22-2010, 12:18 PM
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im running a open downpipe with no turndown or anything right now LOL. AND my shifter boot is just kinda sitting there not really screwed in either LOL.....its loud

I get NO exhaust in the truck, even when i lift up the shift boot to hear that big 7.3 roar LOL. i have noticed the side of my T-case is starting to turn black though hahahaha

97 Single Cab F250 4x4 5 speed

Swapped D-60
Locked front and rear
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Wildman Tunes
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OFE clutch
T500 HPOP
Linex rockers
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and a bunch more...
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post #9 of 28 Old 02-22-2010, 06:26 PM
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The underside of the truck will get coated in soot...

Nick, BPS Historian
1995 F-250 4x4 7.3 Powerstroke
Isspro Gauges, Tony Wildman Tunes, PSGH Stage 1 Injectors, Early 99 Intercooler, ATS Stage 6 E4OD, TCI Tranny Cooler, Snow Water/Meth, Traction Bars, EBPV Brake, TC Lockup Switch, Spray-on Liner, K&N Intake w/ NAPA 6637 Filter, 3" downpipe, 5" mitre stacks.
Waiting to be installed: Electric fuel with A1000 pump and Stealth DIY Dual HPOPs
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post #10 of 28 Old 02-23-2010, 04:07 PM
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Did I read that right? You are planning on replacing your banks dp? Leave that right where it is. Either buy a dp back kit, or go pick up a 3"-4" adapter and 4 feet of 4"pipe and a muffler and clamps. Get a 45 or 90 deg bent 4"piece and there is your system. Shouldn't cost more than 150.

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