CAMARO6 - View Single Post

RHD ZL1 · 01-12-2021, 11:32 PM

Thanks guys.

@JT, If you are planning on doing this, here is a little more info that may help you or anyone that wishes to do the same on their car. On my exh system just behind the diff, there are 2 slotted plates welded to each pipe, the slotted plates over lay one another and once the desired pipe locations are in place an M10 bolt holds them together.The bolt is longer than required so i used that as the first mounting point for the alloy plate and then used a second M10 nut to hold the alloy plate down (very difficult to see in my previous post/pic however if you zoom in you can see the M10 bolt going vertical up just behind the diffs oil drain plug). I mention this as i don’t know if you would have something just behind the diff as the first securing point for the plate. I then used the 4 studs that hold the heat shield in place. I removed the nuts and had 4 extensions made with M6 threads on both sides (see pic) so these double as a nut to hold the heat shield in place and as additionally support for the alloy plate and then used the 3 bolts that screw into the rear bar so there is a total of 8 locations holding the plate in place. There is nil deflection in the plate. I made the plate and had it fitted a week or so ago and have been driving the car around to make sure there were no issues prior to my post as i didn’t want to post this up and then someone copies and they have issues. Another bonus to all this that i have noticed is that my car had the “rear bar sagging” problem where the panel gap between the bar and the cars body near the rear tail lights increases a little. When i fitted the alloy plate i did put load on the bar (to reduce the gap) to get it into place and then marked the last 3 holes in the alloy plate to line up with the bar. I’ve now noticed that the gap stays the same as factory and doesn’t increase. I can only assume that the 3 bolts that screw into the bar are now preventing the bar from moving / sagging as the alloy plate is held in place very securely. That said, the increase in gap was very small (I’d imagine similar to what you guys see on your cars) however now there is no gap issues. Win Win.

@JA105, mines a 2019. Its the only MY ZL1 we received here in Aus so i have no idea how many support bolts the previous models had in the rear bar.

01-12-2021, 11:32 PM	#39
RHD ZL1 Drives: Camaro ZL1 Join Date: Apr 2020 Location: Australia Posts: 43	Thanks guys. @JT, If you are planning on doing this, here is a little more info that may help you or anyone that wishes to do the same on their car. On my exh system just behind the diff, there are 2 slotted plates welded to each pipe, the slotted plates over lay one another and once the desired pipe locations are in place an M10 bolt holds them together.The bolt is longer than required so i used that as the first mounting point for the alloy plate and then used a second M10 nut to hold the alloy plate down (very difficult to see in my previous post/pic however if you zoom in you can see the M10 bolt going vertical up just behind the diffs oil drain plug). I mention this as i don’t know if you would have something just behind the diff as the first securing point for the plate. I then used the 4 studs that hold the heat shield in place. I removed the nuts and had 4 extensions made with M6 threads on both sides (see pic) so these double as a nut to hold the heat shield in place and as additionally support for the alloy plate and then used the 3 bolts that screw into the rear bar so there is a total of 8 locations holding the plate in place. There is nil deflection in the plate. I made the plate and had it fitted a week or so ago and have been driving the car around to make sure there were no issues prior to my post as i didn’t want to post this up and then someone copies and they have issues. Another bonus to all this that i have noticed is that my car had the “rear bar sagging” problem where the panel gap between the bar and the cars body near the rear tail lights increases a little. When i fitted the alloy plate i did put load on the bar (to reduce the gap) to get it into place and then marked the last 3 holes in the alloy plate to line up with the bar. I’ve now noticed that the gap stays the same as factory and doesn’t increase. I can only assume that the 3 bolts that screw into the bar are now preventing the bar from moving / sagging as the alloy plate is held in place very securely. That said, the increase in gap was very small (I’d imagine similar to what you guys see on your cars) however now there is no gap issues. Win Win. @JA105, mines a 2019. Its the only MY ZL1 we received here in Aus so i have no idea how many support bolts the previous models had in the rear bar. Attached Images