When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Wondering if anyone has ever ran their 3" pipe up and over the axle on the driver side?
I have adjustable coil overs so it should keep the UPB and LPB from crushing it, but was just wondering if anyone has done this? Piping under the car will look a lot more clean and uniform instead of making them both go across the passenger side.
Capped off my gas tank vent, going with a vented cap
Capped off the evap line
Isn't it more of a case with ground clearance? The dual pipes are routed along the trans tunnel and tucked up somewhat. The torque arm occupies that space on the driver's side.
The one that I remember was a blue car that never got done and it was amazing. He used a torque arm relocation kit which allowed him to use a shortened torque arm, it connected to his sub-frame connectors, and had two loops through which the exhaust passed, so it could be tucked up into the tunnel.
there is a place between the upper brace/lower panhard rod that there is room, particularly if you go to an aftermarket upper brace. Even more room if you go to a watts link.
This isn't a very easy solution, but it would work.
Yea that was Neil, I guess they found some real rust issues, but yea I think it is possible to go dual 3" if you use the upper panhard brace relocation and the right routing.
Yea that was Neil, I guess they found some real rust issues, but yea I think it is possible to go dual 3" if you use the upper panhard brace relocation and the right routing.
This is not my most recent pics, but I'm pretty sure this is doable. I'm going to a 4th gen tank with no vent after finding rust issues with my old tank.
But I purchased the UMI upper panhard bar relocation kit with lower PHB relocation brackets to drop the lower PHB down and give more clearance for an over the axle exhaust on the driver side.
Also added heat shielding along the fuel/brake lines against the tunnel for extra protection. I'll post more pics as I update it
It can be done. I did 2 1/2",but I also did a lot of other things to make it work. I replumbed the whole car. The fuel, brake, and evap line were moved away from the stock location. I put them in the 10:30 - 11 o'clock position, that moved them quite a bit. That also gave them some protection from a driveshaft failure, they are shielded by the torque arm. I have a LS1 and I am running the stainless works swap long tube headers. Not to complain because I do like the headers, but they were about an inch away from the frame rail on the driver side, and in that inch of space all the plumbing is right there in between the rail and header. Do the math 1" of room, 3/8" fuel line = 5/8" of clearance. It needed attention dual exhaust or not.
Yes I know, there may be a reason too. They did it that way because it's easy and it works. No need in trying to push wet string up a hill.
Then it doesn't apply to my thread. I've seen all the dual pipe 3" setups along the pass side. The clearance isn't any better than tucking a pipe along the driver side. I measured on the lift in my garage.
Lack of sleep was making me think you had stock parts in the rear when I posted the pic. (I didn't see your pix above) It would be easier to do them on the pass side with stock stuff but with all the aftermarket parts that relocate the rear bars you have made extra clearance.
I have seen dual 3" pipes (1 each side) with stock location bars and it isn't pretty which is why I posted the old picture of them on the pass side.
Your work looks great so far.
This is only 2 1/2" tubing, there is room for 3". Ground clearance is not an issue . Things are tight but, nothing hits, rattles, or gets crunched. I used the factory hangers.
If I had more time maybe I should've moved my fuel filter too, as it looks like it added an inch or so on yours, but 2.5 and 3" pipe there's a significant difference, so not sure
Anyhow I got the car pretty much finished, some minor things left to do
Just an update in case anyone is curious. Made the trip to the thirdgen expo this year, and didn't have one issue with ground clearance from Indiana to the show and back. Also an alignment rack that is super sloped at a shop near me, I used to have to use multiple boards and would just barely make it on the rack. Now only required 1 board on the driver side (pipe is a hair lower) and it went right up.
I highly recommend replicating this setup if you go true duals
That is a clean undercarriage and install. Nicely done.
A question though, what is the heat-shield material you used? It looks like textured aluminum or something woven (hard to tell on TV). It looks formable and compliments the underside detail work as well.
That is a clean undercarriage and install. Nicely done.
A question though, what is the heat-shield material you used? It looks like textured aluminum or something woven (hard to tell on TV). It looks formable and compliments the underside detail work as well.
Thank you sir. It is great stuff by DEI called heat and tunnel shield ii.
It has a peelable sticky back to help hold it and you can form it with pressure like an extremely thick aluminum foil. I highly recommend using riv nuts with bolts or self tapping screws to hold them to the body or they may fall off.
Compared to the side pipes I had noticed a HUGE heat reduction virtually no heat in the cabin now with this setup. Very happy with the results.
I recommend using at least 1/4" gap between the material and pipe so the foil doesnt separate from the backing. Though that shouldnt be an issue if you secured them as mentioned above
my ls3 with hedman midlength 1 3/4 with dual 3" hawks tranny mount was altered also
it was ton of work with lots of mandrel bends. had to remove all lines in tunnel jegster torque arm , reinforced the body side panhard mount
this was during fabrication last year, it has a crossover and is thermal wrapped now, ive converted the tq arm to adjustable and made a mount for the 9" that pull it closer to driveshaft for more clearance mine turns up very close to the center section
Last edited by chad pickens; 05-24-2017 at 05:58 PM.
Just an update in case anyone is curious. Made the trip to the thirdgen expo this year, and didn't have one issue with ground clearance from Indiana to the show and back. Also an alignment rack that is super sloped at a shop near me, I used to have to use multiple boards and would just barely make it on the rack. Now only required 1 board on the driver side (pipe is a hair lower) and it went right up.
I highly recommend replicating this setup if you go true duals
Thanks for the help and info guys
Awesome, it is good to hear that you got it on the road and did not experience any clearance issues. You mentioned adjustable coil overs, did you have to adjust them to keep from squishing the drivers side pipe ? Or can you bottom out on the bump stops and still maintain clearance ? And what is that gold link next to your panhard bar, what dose it do ?
Just an update in case anyone is curious. Made the trip to the thirdgen expo this year, and didn't have one issue with ground clearance from Indiana to the show and back. Also an alignment rack that is super sloped at a shop near me, I used to have to use multiple boards and would just barely make it on the rack. Now only required 1 board on the driver side (pipe is a hair lower) and it went right up.
I highly recommend replicating this setup if you go true duals
Thanks for the help and info guys
Awesome, it is good to hear that you got it on the road and did not experience any clearance issues. You mentioned adjustable coil overs, did you have to adjust them to keep from squishing the drivers side pipe ? Or can you bottom out on the bump stops and still maintain clearance ? And what is that gold link next to your panhard bar, what dose it do ?
The gold link helps to support the, now lower, panhard bar mount. The kit gives you all the room you need to lower the car and not have it hitting the exhaust. Plus provides cornering performance increases as well.
The gold link helps to support the, now lower, panhard bar mount. The kit gives you all the room you need to lower the car and not have it hitting the exhaust. Plus provides cornering performance increases as well.
Exactly. This kit does 2 major things:
1) It allows you to level out the LPHB. All, and I mean all PHB relocation kits except this one, throw your LPHB out of level. (Which is not good, you lose center)
2) Allows you to drop the LPHB bar down further on each side via 5 adjustable holes. In my case I put my LPHB on the 3rd hole (right in the middle) to give the exhaust more clearance.
The gold link is to support the new LPHB bracket on the rear. I couldn't use the one that came with the kit as it was too long. Had to make some modifications to the UMI brackets and hardware to make it fit such as:
1) Drill new offset bolt holes that hold the bracket to the rear end. (The moser 9" bracket geometry is just slightly different than a factory 10bolt, so the UMI bracket holes are off maybe 1/8-1/4)
2) Shorter adjuster sleeve (gold bar you see) Funny story, I actually complained they sent me gold when I ordered black, but threw it on there and ended up liking it lol.
3) Wider u bolt for the larger diameter 9" axle tubes
If I had more time maybe I should've moved my fuel filter too, as it looks like it added an inch or so on yours, but 2.5 and 3" pipe there's a significant difference, so not sure
Anyhow I got the car pretty much finished, some minor things left to do
Work of art 🤙🏼 How much ground clearance do you have on the driver side? I’m going to follow your routing and do mine this weekend. I have pretty well the same drivetrain and suspension set up as you, and I relocated my rear axle flex line to allow more room for the over axle pipe. Also, which mufflers did you end up using?
If I had more time maybe I should've moved my fuel filter too, as it looks like it added an inch or so on yours, but 2.5 and 3" pipe there's a significant difference, so not sure
Anyhow I got the car pretty much finished, some minor things left to do
Work of art 🤙🏼 How much ground clearance do you have on the driver side? I’m going to follow your routing and do mine this weekend. I have pretty well the same drivetrain and suspension set up as you, and I relocated my rear axle flex line to allow more room for the over axle pipe. Also, which mufflers did you end up using?
02-06-2017, 11:17 AM
