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-   1997 - 2003 Ford F150 (https://www.f150forum.com/f6/)
-   -   Dual exhaust in front of rear tire (https://www.f150forum.com/f6/dual-exhaust-front-rear-tire-19657/)

jacobs4x4 03-16-2009 06:57 PM

Dual exhaust in front of rear tire
 
Anyone know or have a picture of how to run the driver side pipe I cant figure out how to get around the gas tank... What do you think if I cut them off right after the cats and just made them true duals...

EEExotic 03-16-2009 07:46 PM

there are allot of theory's about running the exhaust in front of the rear tires... many people have said their axle bearings seem to wear out quicker because of the heat blowing onto the tire. Also people say the rear tires wear out much quicker because of the heat.. I have never owned a vehicle or built a vehicle that had the exhaust exit in front of the rear tires because of these reasons.. If you still want to route the exhaust this way its your choice. but there isn't much room in front of the fuel tank on the LH side. In order to get it routed over to the LH side you must go right behind the tail shaft of the tranny and under the frame rail.. it doesn't look very good.

But if you go out behind the tires you can run the dual pipes down to the rearend and then split just before the axle.

This is how many systems are run

willycavs10 03-16-2009 08:25 PM


Originally Posted by EEExotic (Post 158932)
there are allot of theory's about running the exhaust in front of the rear tires... many people have said their axle bearings seem to wear out quicker because of the heat blowing onto the tire. Also people say the rear tires wear out much quicker because of the heat.. I have never owned a vehicle or built a vehicle that had the exhaust exit in front of the rear tires because of these reasons.. If you still want to route the exhaust this way its your choice. but there isn't much room in front of the fuel tank on the LH side. In order to get it routed over to the LH side you must go right behind the tail shaft of the tranny and under the frame rail.. it doesn't look very good.

But if you go out behind the tires you can run the dual pipes down to the rearend and then split just before the axle.

This is how many systems are run

i hate to be a "nay-sayer" but in all honesty, how much would that heat REALLY effect the tire's performance, if your going fast enough that the exhaust is that hot, the wind from your speed will more then likely counter any exhaust gas issues. dont get me wrong, im sure theres a factor but its gotta be close to nothing. im not coming at what you are saying and correct me if im wrong but i dont know how much it would really play a difference. as far as the side exhaust... GO FOR IT MAN! it'll look great on that truck

FOMOCO466 03-16-2009 08:42 PM

even duals
 
1 Attachment(s)
it wouldn't be that hard to do. you run the dual kit like anyother, after the extension part goes over to the driver side you'd put a bend after the tank to shoot down, then another to bend it out to where you want the tip. the only thing is will you see the pipe where it drops behind the tank to come forward. if you look at the side exhaust kits for the stangs it looks like 2 j's then it comes out. it goes back then out and forward then out to the tips the car duals look like this

jacobs4x4 03-16-2009 09:14 PM


Originally Posted by EEExotic (Post 158932)
there are allot of theory's about running the exhaust in front of the rear tires... many people have said their axle bearings seem to wear out quicker because of the heat blowing onto the tire. Also people say the rear tires wear out much quicker because of the heat.. I have never owned a vehicle or built a vehicle that had the exhaust exit in front of the rear tires because of these reasons.. If you still want to route the exhaust this way its your choice. but there isn't much room in front of the fuel tank on the LH side. In order to get it routed over to the LH side you must go right behind the tail shaft of the tranny and under the frame rail.. it doesn't look very good.

But if you go out behind the tires you can run the dual pipes down to the rearend and then split just before the axle.

This is how many systems are run



Originally Posted by willycavs10 (Post 158965)
i hate to be a "nay-sayer" but in all honesty, how much would that heat REALLY effect the tire's performance, if your going fast enough that the exhaust is that hot, the wind from your speed will more then likely counter any exhaust gas issues. dont get me wrong, im sure theres a factor but its gotta be close to nothing. im not coming at what you are saying and correct me if im wrong but i dont know how much it would really play a difference. as far as the side exhaust... GO FOR IT MAN! it'll look great on that truck

My truck is a 97 it has the stock pipe come out in front of the right side tire. So what I was thinking was cut both pieces at the cats then leave the stock pipe to the right side and just weld in a piece to make it fit right to that cat (I dont have to wory about mufflers because I dont have one now anyway) then somehow making a custom pipe for the other side (you think it might be worth just taking it to an exhaust shop and haveing them do that one side) also I have a body lift so I have a 3" gap in between the frame and the bed...

FOMOCO466 03-16-2009 10:29 PM

exhaust
 
can't go between the body and frame (that's out)
the body lift might show more pipe than you think. I'd go by a shop, tell them what you want to do. get it on a lift and have them show you what they would do, and see where the pipe would show from the outside. go from there.

willycavs10 03-16-2009 10:47 PM


Originally Posted by jacobs4x4 (Post 159025)
My truck is a 97 it has the stock pipe come out in front of the right side tire. So what I was thinking was cut both pieces at the cats then leave the stock pipe to the right side and just weld in a piece to make it fit right to that cat (I dont have to wory about mufflers because I dont have one now anyway) then somehow making a custom pipe for the other side (you think it might be worth just taking it to an exhaust shop and haveing them do that one side) also I have a body lift so I have a 3" gap in between the frame and the bed...

im having trouble understanding this but what i am getting from u is that you definately want to keep the cats, BUT its an awkward bend coming out the right side so u wanna keep that bend to the right and make a special part to make the left side bend to the left?... unless ur VERY handy, i would say take it to a shop. but find a blueprint of the exhaust and draw out what you want so they have something to follow

jacobs4x4 03-16-2009 11:27 PM


Originally Posted by willycavs10 (Post 159102)
im having trouble understanding this but what i am getting from u is that you definately want to keep the cats, BUT its an awkward bend coming out the right side so u wanna keep that bend to the right and make a special part to make the left side bend to the left?... unless ur VERY handy, i would say take it to a shop. but find a blueprint of the exhaust and draw out what you want so they have something to follow

No I don't want to turn right out of the cat I want to go back to the same but opposite spot that the right side comes out stock.

I want to take the y pipe out of the passenger side and add a whole new exit on the driver side

willycavs10 03-16-2009 11:31 PM


Originally Posted by jacobs4x4 (Post 159135)
No I don't want to turn right out of the cat I want to go back to the same but opposite spot that the right side comes out stock.

I want to take the y pipe out of the passenger side and add a whole new exit on the driver side

OHHHHH gotcha:thumbsup: ok well its 3 inch tubing if im not mistaken, why dont u leave that y pipe as is so u have a balancing point between the 2 sides and then split a pipe from that drivers side where it bends

jacobs4x4 03-17-2009 08:20 AM

is it that important to equalize the pressure... I think the pipe is 2.5... Will leaving that cross pipe rob my sound


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