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Hey I wanted to know if anyone has had problems installing headers on the C7 Grand sport. I had the C6 GS and headers cooked my starter and wiring many times so it took a lot of extra work to protect all that from the headers. Wanted to know if the same issues arise with C7 or not. Track car so will be pushed hard
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thanks for the response, however this is a “Grand Sport” does not have a blower. I am refurung to issues with burning up starters and wiring when installing headers. From all the extra heat the headers produce over the OE manifolds . Not engin eat.
Originally Posted by 9sec
same if not worse. heat issues on a c7 are way more than a c6 since th3e blower is smaller and works way harder than the 2.3 in the c6.
No issues with heat regarding the starter. The C7 has a heat shield around the starter. Can always add some self-adhesive sheet insulation from some place like DE Inc. Having the headers coated will also help in general.
Where I did have an issue was the positive cable that runs to the underhood fuse box. The insulation on mine was starting to melt where it goes to the starter so it's wrapped with gold foil tape now. In addition, where the cable runs across the frame rail to the fuse box was starting to melt and was much worse than near the starter. I wrapped that area with a blanket and (not shown in the pic) and with gold foil as well.
No issues with mine although my headers are coated , I am also using the stock plug wires also . You have to remember on a stock C7, the cats are located between the frame rail and the starter .That area gets real hot
With headers my cats are located down in the tunnel area, leaving much more room between the starter shield and the pipes
I to had a C6 with headers and experienced a fried selonoid but I think most of the heat damage was caused by the stock exhaust as I did not have my headers on that long before I had issues . Changed the selonoid and drive it for 70,000 miles
Thanks! Exactly the info I was looking for. My C6 Inhad to coat and wrap the headers and also add a heat sheield box and also wrap the starter and wires.
QUOTE=96GS#007;1608617659]No issues with heat regarding the starter. The C7 has a heat shield around the starter. Can always add some self-adhesive sheet insulation from some place like DE Inc. Having the headers coated will also help in general.
Where I did have an issue was the positive cable that runs to the underhood fuse box. The insulation on mine was starting to melt where it goes to the starter so it's wrapped with gold foil tape now. In addition, where the cable runs across the frame rail to the fuse box was starting to melt and was much worse than near the starter. I wrapped that area with a blanket and (not shown in the pic) and with gold foil as well.
Thanks! I will most likely remove the cats all together and I will coat them inside and out. I guess I’ll wrap them as well. As I did my C6 after seing other comments.
QUOTE=Dcasole;1608618405]No issues with mine although my headers are coated , I am also using the stock plug wires also . You have to remember on a stock C7, the cats are located between the frame rail and the starter .That area gets real hot
With headers my cats are located down in the tunnel area, leaving much more room between the starter shield and the pipes
I to had a C6 with headers and experienced a fried selonoid but I think most of the heat damage was caused by the stock exhaust as I did not have my headers on that long before I had issues . Changed the selonoid and drive it for 70,000 miles
You spend any time on the track? And anyting else melt ?
....which is a good point. My car is used for track days and time trials so as you're aware it's out there for 20-30 minutes at a time. I also instruct so there are some days it's on track for 6-8 sessions per day.
I haven't had anything else melt although I did also wrap the other lines along the passenger side frame rail (AC) and a little more heat wrap on the brake lines on the driver's side. One other note that may be of interest....Depending on header brand and if you have bullet cats, you may need spacers for the tunnel plate to fit.
Thanks for that extra info. I’ll prob get LG’s headers and go cat-less.
QUOTE=96GS#007;1608618652]....which is a good point. My car is used for track days and time trials so as you're aware it's out there for 20-30 minutes at a time. I also instruct so there are some days it's on track for 6-8 sessions per day.
I haven't had anything else melt although I did also wrap the other lines along the passenger side frame rail (AC) and a little more heat wrap on the brake lines on the driver's side. One other note that may be of interest....Depending on header brand and if you have bullet cats, you may need spacers for the tunnel plate to fit.[/QUOTE]
Thanks for that extra info. I’ll prob get LG’s headers and go cat-less.
QUOTE=96GS#007;1608618652]....which is a good point. My car is used for track days and time trials so as you're aware it's out there for 20-30 minutes at a time. I also instruct so there are some days it's on track for 6-8 sessions per day.
I haven't had anything else melt although I did also wrap the other lines along the passenger side frame rail (AC) and a little more heat wrap on the brake lines on the driver's side. One other note that may be of interest....Depending on header brand and if you have bullet cats, you may need spacers for the tunnel plate to fit.
[/QUOTE]
Here is the issue with LGs.....the bungs are located in the wrong place so the O2 sensors get jammed into the heat shield in the tunnel. This is all part of my long and sordid tale of ****-poor workmanship. I'm spending a bunch of money to have the headers reworked to move the bungs before I have them coated. If I didn't already have them, I'd be buying Kooks or ARH.
Oh dam that sucks. ARH is what I had on my C6. I’ll have to ask Dane if this issue has been fixed yet. Thanks again for the tip
Here is the issue with LGs.....the bungs are located in the wrong place so the O2 sensors get jammed into the heat shield in the tunnel. This is all part of my long and sordid tale of ****-poor workmanship. I'm spending a bunch of money to have the headers reworked to move the bungs before I have them coated. If I didn't already have them, I'd be buying Kooks or ARH.
You spend any time on the track? And anyting else melt ?
HA ... I have not recently because of work demands but yes she is no garage queen plus it's procharged ..... no melting
One thing you will love , with NPP closed , it sounds like your fathers Buick. With it open at highway speeds , no drone , and perfect sound , at wide open throttle.. it sounds down right angry 😆
Headers heat issues
