Installing C7 Under Guards
Thread Starter
Le Mans Master
Joined: Jul 2013
Posts: 5,191
Likes: 3,388
From: Morrill Nebraska
Installing C7 Under Guards
This is a long post so if you are not going to install under guards on your car don't waste your time reading this. Sorry about the pictures as this is the best I could do with the car 8 inches off the ground. I drove the car up on ramps and removed the 7 torque head screws that are in the way. These screws don't come out easy as I found out the hard way when I broke one off. Use a #25 torque head bit to remove these. Seven on each side. I would back them out a ways and apply never seize and tighten them up and back them out again until they came out. Take your time as I didn't and snapped one off and then I had to drill it out and re-tap it. When you get all seven of them out there is a bolt in the front that comes out that holds the front of the under guard in place. Install the under guard with seven bolts . They will line up with the threaded holes of the torque head screws you removed. They didn't send me enough so I had to buy some. Don't tighten because the front bolt hole my not line up. Mine didn't and I had to re-drill it. When all the holes line up tighten up the bolts. I hope this helps.
Safety Car
Joined: Feb 2013
Posts: 4,875
Likes: 1,174
Looks good. I was thinking of doing this myself. This is probably a dumb thought but I wonder if these mess up the aerodynamics under the car? If they did it would likely be completely irrelevant but I wondered about this.
Thread Starter
Le Mans Master
Joined: Jul 2013
Posts: 5,191
Likes: 3,388
From: Morrill Nebraska
I wouldn't know about aerodynamics but they sure help to protect the bottom of your car. I have installed these on my c5 and my c6's the installation on the c7 was the hardest but I wouldn't be without them.
Race Director
Joined: Sep 2013
Posts: 11,825
Likes: 2,479
From: Ft Lauderdale
Tech Contributor
looks nice....Ive got the pucks...for me the aerodynamics are not important as long as it's does not set up a whistle or drone of some sort...I'm sure the mfr has tested that....
Instructor
Joined: Oct 2007
Posts: 188
Likes: 0
Hope this doesn't seem like a silly or obvious question, but wouldn't you want the underguard to have countersunk bolt holes? Given what's going to happen to those pieces, maybe at high speeds, you're almost certainly looking at some sheared-off bolt heads.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
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Racer
Joined: Nov 2013
Posts: 399
Likes: 12
From: Vancouver Washington
Hope this doesn't seem like a silly or obvious question, but wouldn't you want the underguard to have countersunk bolt holes? Given what's going to happen to those pieces, maybe at high speeds, you're almost certainly looking at some sheared-off bolt heads.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
Pro
Joined: Aug 2013
Posts: 698
Likes: 5
Le Mans Master
Joined: Oct 2004
Posts: 8,615
Likes: 60
From: Haymarket Virginia
Hope this doesn't seem like a silly or obvious question, but wouldn't you want the underguard to have countersunk bolt holes? Given what's going to happen to those pieces, maybe at high speeds, you're almost certainly looking at some sheared-off bolt heads.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
Drifting
Joined: Jul 2002
Posts: 1,386
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From: NC
Cruise-In IV Veteran
St. Jude Contributor
It helps protect the car when someone else it trying to lift the vette for service. Too many stores of tire shops and various service shops that have lifted a vette in an incorrect location or without pucks only to cause some damage that sometimes goes unseen for a period of time. The under-guard rails will be going on my upcoming C7, but only with flush mount or recessed mounting for the screws/bolts.
Thread Starter
Le Mans Master
Joined: Jul 2013
Posts: 5,191
Likes: 3,388
From: Morrill Nebraska
Hope this doesn't seem like a silly or obvious question, but wouldn't you want the underguard to have countersunk bolt holes? Given what's going to happen to those pieces, maybe at high speeds, you're almost certainly looking at some sheared-off bolt heads.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
Designing/building them right may have required an extra dollar or two, but would be a lot better IMHO.
Thread Starter
Le Mans Master
Joined: Jul 2013
Posts: 5,191
Likes: 3,388
From: Morrill Nebraska
It helps protect the car when someone else it trying to lift the vette for service. Too many stores of tire shops and various service shops that have lifted a vette in an incorrect location or without pucks only to cause some damage that sometimes goes unseen for a period of time. The under-guard rails will be going on my upcoming C7, but only with flush mount or recessed mounting for the screws/bolts.
Thread Starter
Le Mans Master
Joined: Jul 2013
Posts: 5,191
Likes: 3,388
From: Morrill Nebraska
This is a long post so if you are not going to install under guards on your car don't waste your time reading this. Sorry about the pictures as this is the best I could do with the car 8 inches off the ground. I drove the car up on ramps and removed the 7 torque head screws that are in the way. These screws don't come out easy as I found out the hard way when I broke one off. Use a #25 torque head bit to remove these. Seven on each side. I would back them out a ways and apply never seize and tighten them up and back them out again until they came out. Take your time as I didn't and snapped one off and then I had to drill it out and re-tap it. When you get all seven of them out there is a bolt in the front that comes out that holds the front of the under guard in place. Install the under guard with seven bolts . They will line up with the threaded holes of the torque head screws you removed. They didn't send me enough so I had to buy some. Don't tighten because the front bolt hole my not line up. Mine didn't and I had to re-drill it. When all the holes line up tighten up the bolts. I hope this helps.
