[djctoto]

While in the process of installing ARH headers and long system exhaust it became obvious that this was the best time to install a few other aftermarket upgrades that would be a royal pain in the butt to do any other time. So if headers and exhaust is on your list it's worth the few extra $$ to do it at the same time.

I now consider both a "Must Do" at the same time

1. BMR Motor mount kit with integrated stands, poly bushings, Part Number: MM010 $279.95 Provides a much more substantial engine mount, doesn't add any NVH and frees up tons of room to make header installation easy. Not something that can realistically be done without the stock exhaust manifolds removed.
https://bmrsuspension.com/product/1778

2. JBX Driveshaft Center Support Bearing Carrier Upgrade Part Number:
GM003A0 $299.99 The stock carrier has some pretty flimsy rubber around the support sheet metal connecting it to the bearing. Mine was fine but it wasn't something that inspired longevity. It's super easy to install with the exhaust removed but would be substantially more involved otherwise. The street version is much improved over the stock one and doesn't add any NVH.
https://www.jxbperformance.com/produ...MVz4HqloH3UwrY

[SOCAL.M6.ZLE]

Hey buddy, could not agree more. I would ADD to that list the following.

1. ARP Header Studs. This helps prevent galling of the threads from repeated use, and best of off, they act as a second set of hands when installing, as they hold the gasket in place!

2. Spark Plugs. No easier time to throw in a fresh set of plugs than when making access from headers!

3. DEI Header Wrap. If you didn't have the $$$ or time to get your headers Jet-Hot coated, the next best options is cheaper and faster... wrap them up, and keep the engine bay cooler.

Great food for thought, when considering headers on the 6th gen. platform!
Also found this KOOKS BUNDLE KIT that includes all of the above, to make it a simple 1-click purchase, saving time, and $$$

Cheers to going faster and staying cooler!

[2023_ZL1-AUTO]

BMR Motor mounts are BEEFY !!!!

[AZIROC]

Now I wish I did the motor mounts.

[Jeauxy]

Originally Posted by 2023_ZL1-AUTO

BMR Motor mounts are BEEFY !!!!

I am installing these literally tomorrow and your photos are exactly what I needed for a visual. Thanks for posting these!

[NG329]

I have the BMR motor mounts.

I DO NOT recommend the poly. I destroyed them after 1 season. Granted, I'm superhuman fast on the race track, but that's besides the point. They didn't hold up. Go with the solid mounts.

I'll post pictures of mine later if I can find them. Jannetty saved them when they built my car last month. They are destroyed.

[djctoto]

All great comments.

NG329 Question:
Did Jannetty express any concerns about the solid bushing in the motor mounts triggering the knock sensors due to the added NVH. I was thinking of getting them over the poly but with other car makes solid motor mounts were found to be a problem. Fortunately with the BMR mounts changing bushings is real simple so if they get trashed it's a quick job. I'm planning on tracking mine pretty regularly so I should expect the same. Interested is seeing those pictures. Also how long did you have the poly bushings installed.

Some more food for thought.

I chose not to use header studs but bought some new one time use OEM bolts since they're self aligning, are flanged, have the and have threadlocker already on them. Someone else posted that this is what another header manufacturer recommended using so I went this route.

Mr. Gasket MLS # 4808G header gaskets come slotted at each end so you install just the 2 end bolts leaving a space between the header and head and drop the gasket into place. Put the rest of the bolts in and torque to spec. I've used them a few times in the past and they work really well.

I just got the ARH 2" long tube headers installed and discovered that with the BMR mounts the drivers side went right in.
But on the pass side I had first support the motor and lift it slightly so I could loosen up the 4 mounting bolts holding the BMR mount to the block and then remove the 2 bolts and big nut on the bottom to remove the bottom plate altogether. This allowed me to pivot the mount just enough to get the header in place. Once the header was up in the general area I used a long extension with a swivel to tighten the 4 bolts, reinstalled the plate 2 bolts and big nut, lowered the motor back down, then finished installing the header.

The ARH headers fit perfectly and don't touch anywhere, Plugs and wires fit nice as well.

Installing their long system was another story altogether I had to cut down the 2 front catless connecting pipes and the x-pipe down both about an inch to get it all to line up and go together.

Nothing was a big deal just took a lot longer than I expected. But that's why I did it all with snow on the ground, so I could take my time and figure it out.

[NG329]

Originally Posted by djctoto

All great comments.

NG329 Question:
Did Jannetty express any concerns about the solid bushing in the motor mounts triggering the knock sensors due to the added NVH. I was thinking of getting them over the poly but with other car makes solid motor mounts were found to be a problem. Fortunately with the BMR mounts changing bushings is real simple so if they get trashed it's a quick job. I'm planning on tracking mine pretty regularly so I should expect the same. Interested is seeing those pictures. Also how long did you have the poly bushings installed.

I only had them for 1 season and there's no telling when they became defective. I did about 14 track days last season.

I'm heading out in a little while to finish watching the Daytona 500. When I get back I will dig it up for you. In my case, one bushing was completely missing and the 1 that was left was completely smashed. FYI - I routinely pull 1.4G in turns at the track when running the slicks.

Jannetty wasn't too concerned about me running the solid bushings. In fact, he recommended them after he saw the condition of my mounts.

[djctoto]

Originally Posted by NG329

I only had them for 1 season and there's no telling when they became defective. I did about 14 track days last season.

I'm heading out in a little while to finish watching the Daytona 500. When I get back I will dig it up for you. In my case, one bushing was completely missing and the 1 that was left was completely smashed. FYI - I routinely pull 1.4G in turns at the track when running the slicks.

Jannetty wasn't too concerned about me running the solid bushings. In fact, he recommended them after he saw the condition of my mounts.

I never thought that a poly bushing would completely self destruct like that. No need for the pictures I believe what you've said. Good to know you worked with Jannetty. Now that I have my headers installed I'm planning on taking my car to them to have it re-tuned.

Getting off topic a few things.

Can you comment on your experience in working with Jannetty.

Also would you please tell me about your slick set up. What wheel size and offset, what tire size and brand. I've installed extended race studs on all four wheels in anticipation of running an 18" square set up with slicks but haven't pulled the trigger yet. Would lover to hear what your running?

Also curious to know if you're running the stock DSSV's?

I also see that you're in NY, I'm in S. NH and hoping to make it to the Glen this year. I'm also one of the founders of Clubmotorsports in NH which is an awesome track. If you're ever thinking of heading this way for a track day let me know I could have you as a guest at no cost. It be both fun and educational to run with another ZLE.

[NG329]

Originally Posted by djctoto

I never thought that a poly bushing would completely self destruct like that. No need for the pictures I believe what you've said. Good to know you worked with Jannetty. Now that I have my headers installed I'm planning on taking my car to them to have it re-tuned.

Getting off topic a few things.

Can you comment on your experience in working with Jannetty.

Also would you please tell me about your slick set up. What wheel size and offset, what tire size and brand. I've installed extended race studs on all four wheels in anticipation of running an 18" square set up with slicks but haven't pulled the trigger yet. Would lover to hear what your running?

Also curious to know if you're running the stock DSSV's?

I also see that you're in NY, I'm in S. NH and hoping to make it to the Glen this year. I'm also one of the founders of Clubmotorsports in NH which is an awesome track. If you're ever thinking of heading this way for a track day let me know I could have you as a guest at no cost. It be both fun and educational to run with another ZLE.

Hey, circling back. Turns out that I left the bushing along with some other takeoff parts at my other house. I will definitely get over there this week. I definitely want you to see the pic of the bushing and it may be informative to others.

I had a great experience working with Jannetty and I am working on a thread to give a full review.

Regarding my setup, up until now I have been running a staggered setup with 18" wheels. 18x11 front and 18x12 rear with Pirelli DH takeoff slicks. My PB at NJMP Thunderbolt with 671HP to the wheel was a 1:24.9. For reference as to how quick that is, Andrew Aquilante - 15 time SCCA champion, wins SCCA races there running 1:22.x in his $200k Mustang race car. Up until now, I have been running the DSSV but am looking at either a custom Penske Setup, or the Vorshlag MCS with GTR spring setup. I currently run APR wheel studs as I once shredded 6 OEM in a single session pulling 1.5Gs laterally.

I instruct with HookedOnDriving. I may make it to Watkins this year, but it'll be my first time there. So don't expect fireworks or world class driving. But if you make it down to NJMP I'll be happy to bring you shotgun for a few laps. I'm a "demi-god" there. People come just to try and kick my a$$. hahahahahaha

[Jeauxy]

Originally Posted by NG329

I have the BMR motor mounts.

I DO NOT recommend the poly. I destroyed them after 1 season. Granted, I'm superhuman fast on the race track, but that's besides the point. They didn't hold up. Go with the solid mounts.

I'll post pictures of mine later if I can find them. Jannetty saved them when they built my car last month. They are destroyed.

When you say "do not recommend the poly", are we talking about the #MM010H kit? And if so, is using them on a daily 1LE going to cause them to get destroyed as fast?

I track the 1LE maybe 1-2 times a year, but I don't want to be replacing these anytime soon or ever for that matter lol.