Yup I wanted dual exhaust and now I am almost done. To achieve good clearance I had to fab up a new transmission cross member. I also needed to change the cross member mounting location. It now interfered with my inner subframe connectors so I bent up some new sfc's while I was at it.

 

This is the left side over the axle upon full compression of the axle. Not a lot of room, I hope it is enough. Also a pic of it all bolted up, it all tucks up in there pretty nice.

 

Pretty cool. I'd like to see how you went up and over the axle on the LH side

 

What size exhaust pipe is it?

Can u get better pics of the exhaust going over the axle? I'm planning to do something simular and I'm going with 3" dual exhaust. Otherwise I got a Panhard bar relocation kit which allows dual exhaust on the pass side but I would rather do it like u did.

 

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What size tubing did you use for the SFCs and trans crossmember?

Also, have you thought about adding some plates to the SFCs to attach them to the floor pan under the rear seats? Right about where the bend is in the SFCs? I think that would add some more strength without adding a lot of weight. Otherwise, it seems to me that part of the SFCs would just "float" there and not add much more to the overall stiffness of the chassis.

 

I used 1 5/8 od .120 wall dom tubing. It dose kinda just float there. I had Alston inner sfc's and I will admit it was tough, but I banged em up a few times. They were a straight shot from about the same points. I did it this way and ended up with some extra ground clearance.

 

The difference is that the bar you made gave you more clearance… the founders one I bought and hope ships out some time soon is not as kind lol. ITs more of a straight shot from the frame mounting point after its been dropped about 1.250" as thats the thickness of the DOM tubing.
http://cdn2.bigcommerce.com/server15...0.1280.jpg?c=2

3" is still 3", so mine would be .5" large in DIA but i would have less room due to the bar design ugh lol… I might try to oval the exhaust at that point for 1" of extra clearance and it shouldn't hurt flow.

 

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Yea it's in there quite alot huh lol.

It's a stock 3rd Gen tank thay I have sumped for an external pump and -10 return line fitting welded on. Works fine... I will have to see what the bar looKS like when I get it... good news is that since I'm relocating the Panhard bar I will drop the Panhard bar down on the left side as well so the bar is moving down as well giving me more room as well... Really depends on clearance around the axle tube. Hoping coil overs give me alittle room as well.

I gotta see what it looks like but I know it's gona be tight.

 

Nice job man

 

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I like the steel tanks personally… I feel more secure plus I can weld bungs and never get leaks… Ive tried bulkhead fittings and they always seems to leak for me lol.

My ford 8.8 has 3" axle tubes as well. Maybe your not following… the pan hard bar brace sits still on the driver side and pass side. The pan hard bar is located below and moves up and down as suspension compresses and decompresses. Since the upper support bar is fixed if I lower the pan hard bar itself both at the frame mount (pass side) and the driver side (on the rear axle tube bracket) it effectively gives me alittle more room no? The Founders bar I purchased lowers the pan hard bar at the frame mount a good bit (prob 2") and I have a bracket I welded to my pan hard bar axle mount… thus allowing me to change my roll center by moving the bar up and down to level it out on the axle tube. Pushing it down toward the ground will help level my lowered pan hard bar mount on the frame as well as increase my clearance for the exhaust… phew lol.

Heres a quick drawing of my rear end (will have coil overs soon) and you can see the exhaust and thats where I will be running the pipes over the axle and out the back. In the pic, green shows where the PHB and support will be (can see my lowering holes on the rear axle mount) and how it will be lower than stock… it actually already is be my car was lowered.

 

You said bung.

 

Where do you want to put the pipe ? In between the gas tank and the brace or in between the brace and the pan hard bar.

 

Pass side in between the brace and pan hard bar (over axle tube), on the driver side its going the OEM route so over the brace between the gas tank and brace.

 

It sounds like you have that backward? There is no OEM route on the LH side....

 

I think he means running it like OEM did on right hand side but on the left hand side in between the brace and the gas tank.

 

Exactly… Im going to route the pass side just like OEM, the drive side will do between the PHB brace and the PHB/Axle tubes. Thats the only way for me… not going to loop both sides to the pass side and then come all the way back on the driver. This is why Im worried about the PHB support and PHB scissoring the exhaust pipe. I get my relocation bar tmrw and will hopefully see soon what I can do.

 

Im doing the same thing as you… just not with the 4th gen tank and your DIY PHB brace.

 

Looks great!

 

Very cool.

I'd love to hear that exhaust

 

Me too. Spun a bearing.