Exhaust Stack through the Hood!??

[dPierce]

My buddy has a '93 w250 and wants to put the exhaust straight up through the hood, farm tractor style. There was a first gen at Muncie and Terra Haute with this set-up, but we never got a chance to look at it.



We're wondering how to plumb this system in. Are there any kits available? If not, how would the pipe be routed from the turbo to go straight up through about the middle of the passenger side of the hood. What about rain/water issues? Do stack systems have a drain? I see lots of stacked trucks running around with no flapper on the top?



It looks bas a**, especially out on the street.

 

[sparks57]

I hope you know that it is really illegal to run that kind of exhaust on the street, and it won't benefit your EGT's much anyways,



You would have to modify and reverse the downpipe so it points up and go from there.



The only way to take care of the water issue is to get one of those flipper caps, or put a bag over it when the truck is sitting. You don't have to worry about water getting in when the truck is moving and exhaust is comming out.

 

[dPierce]

Illegal?

Please explain why it would be illegal. There are trucks with single and dual stacks running around, I'm curious why running it out the hood is really that much different. Obviously it would be near impossible to run a muffler, but most guys with stacks don't have those either.



Not trying to be a smart a**, just wondering what your opinion is based on.



Pierce

 

[sparks57]

I was told by a state trooper that any setup that obviously does not have a muffler is not a good idea to have around state cops.



You are SUPPOSED to have a muffler, but if you at least don't make it obviouse that you don't have one you should be ok.



If you ever take that truck to California, the first cop you see will nail you hard.

 

[Trizae]

I think it would be pretty cool,,,,,,, Va low Only requires that you "do not alter the exhaust from the last emissions componet forward" I am not as familur with the 1st gen trucks as i should be, but i dont think they hae a converter,,,,,,, if they dont,,, the last thing you could consider and emissions componet would either be the manifold or the turbo,,,,,,,,,,,

 

[Turbo Tim 1]

Legality - I believe but don't quote me on this that an exhaust system has to exit past the passenger cabin (ie behind the cab) to be road legal

 

[RCCola]

?

How would you open and close the Hood?

Wouldn't the hole have to be 10 or 15 inches long so when you opened the hood the stack could stay in place?



I think it would be cool, no doubt but if he wheels his truck in the woods, limbs and branches might be hard on the stack and try and "remove" it for him.



Just an fyi



If any one has any picture post them.



Have a Great Day

Roll the coal

 

[dPierce]

Originally posted by RCCola

We were wondering the same thing. Our best guess is that the hood would have to be lifted flat, straight up off the truck. We were thinking of a 5" stack, that only protrudes about 2 to 2. 5 feet above the hood, roughly 6 inches below the roof line. Really wish we could have gotten a closer look at the truck with this set-up in Terre Haute.



Legality, I definetly could see it being illegal, otherwise, we'd see more vehicles like this on the street. From the standpoint of attracting unwanted attention on the street, this is probably near the top of list. Even if it's not technically illegal, I can see cops wanting to take a closer look and potentially finding other "violations". I had also thought of the exhaust being in-front of the passenger cabin; in fact, I was telling my buddy about all the diesel soot he'll be cleaning off the passenger side of the cab... . he didn't care



We're going to keep checking into this project. There probably aren't many guys that don't think this would look and sound awesome. You can call us rednecks, but we really don't care



Any specific info from someone who did this, or tried to do it would be appreciated.



Pierce

 

[BarryG]

If I recall my wrenchin days correctly Turbo Tim has it right. For it to be road legal it must exit behind the passenger compartment. So that exhaust gases can't enter/flow into the passenger compartment.

 

[jerrethomas]

you can't have anything higher then i beleive it to be 4 inches past the bottem of the windsheild. simaliar to a cowl induction hood is pushing it to be road legeal. i'm pretty sure that's teh way it is in PA anyhow.

 

[JLEONARD]

4 inches past the bottem of the windsheild



In that case you better find a really good windshield washing fluid... one that dissolves soot!! :>)

If you forget your sunglasses just give her a little throttle!!

"Hey, is that a smoked glass windshield?"

"Why yes it is thank you".



Sorry, not intended to make fun of the project... I just had those thoughts.

 

[Greenleaf]

There is a wood stove dealer near-by. They have some powerful solvent to clean the inside of the glass on my woodburner. Don't know the name of the product, but one could fill the solvent tank with this. If I remember right, it's $18. 95 per ounce:--)

 

[jbolt]

I just don't understand the fatuation with stacks. I mean it takes all the fun out of smoking ricers, punk kids and grumpy old men.



Oo.



Jay

 

[formula]

How about like this?



#ad

 

[jdurham]

Hey Formula, I thought you got therapy about this!!!

 

[dPierce]

Formula! Is that your ride??

That is awesome! Give up some details on the questions posted earlier like how to open the hood and legalities of the set-up.

 

[Philip]

Hey Formula, I thought you got therapy about this!!!

No he didn't. It was cheaper to do the twin setup.



roflmao.





Most state require the exhaust to exit after the passenger compartment or the rear window that I am aware of.

 

[jerrethomas]

i think i would rather have the twins in the picture rather then the stack. sry, just had to add that.

 

[formula]

The truck in the pic is not mine. (though it would be sweet if it were ) I took that pic at Muncie this summer. I may have some more pics. It's a 2nd gen sled pulling truck. Not really set up to run on the street. It's got a big set of twin turbos, modified P7100 injector pump, big injectors, two stage water injection, copper head gasket, etc, etc. As far as the hood clearance..... the 5" stack was about 18-24" above the hood and the hole wasn't much bigger than that. Maybe about 7" or so. Also, the hood, when open, was raised above the top of the stack. The 2nd gen hoods might open and close a bit differently than the 1st gens, lending to the ease of stack-through-hood installation. However, on both 2nd gen and 1st gen, the hood does not swing about a single pivot point like a door does. The hinges have a compound action providing lift and tilt at the same time.



Therapy..... HAHAHAHAHAHA



Cheers,

Sean

 

[WadePatton]

fwiw

Legality depends on the state the truck is registered in. Turbo is considered a muffler in most states.