Header coating

Robbie Welch · 07-10-2013, 06:55 AM

Well we got the new headers built and on the car(uncoated). What adifferance they make in the sound of the car. I can't wait until Fridays T&T before the PRO AM to see how it runs. See you there.

69Cobra · 07-10-2013, 10:04 PM

Pics????

Robbie Welch · 07-11-2013, 07:23 AM

Kris, I'll take some photos when I take them off after the PRO AM for coating,and report on any performance changes.

Robbie Welch · 07-17-2013, 07:44 AM

Well I ran the car with the new headers on it this weekend. As you may know I'm a .90 guy and the results where inconclusive. I ran it off the off on the first run but it wasn't a good clean run and went 10.32 128mph. That seemed a little slow but the mph seemed pretty good for the weather. On the stop it seemed to take quit a bet more to slow the car to 10.90 and it still went 128. I felt like with the weather correction numbers for the weekend it would of run 126 or so in the past? We'll see. I know this isn't the .90 form but you guys seem to respond more . Thanks Robbie. Now to put the disc brakes on. Anyone want to guest what the car will go after that? I'm going from 4 wheel drum to 4 wheel disc.

jmcarter · 07-17-2013, 08:33 AM

Quote:

Originally Posted by Robbie Welch

Well I ran the car with the new headers on it this weekend. As you may know I'm a .90 guy and the results where inconclusive. I ran it off the off on the first run but it wasn't a good clean run and went 10.32 128mph. That seemed a little slow but the mph seemed pretty good for the weather. On the stop it seemed to take quit a bet more to slow the car to 10.90 and it still went 128. I felt like with the weather correction numbers for the weekend it would of run 126 or so in the past? We'll see. I know this isn't the .90 form but you guys seem to respond more . Thanks Robbie. Now to put the disc brakes on. Anyone want to guest what the car will go after that? I'm going from 4 wheel drum to 4 wheel disc.

How much weight will you lose in the brake change? If ~100 lbs and you then re-add the weight in ballast it becomes unspung mounted low and more to the rear which means the car will react quicker but probably not much quicker. If you lose that weight then I'd say .07-.08 quicker. Cars on a stop have more variables involved than a regular class car but I'd be interested in what you come up with.

jmcarter · 07-17-2013, 08:38 AM

BTW, if you didn't put on merge collectors contact Mark Lelchook for a set of his, you will not be disappointed.

Robbie Welch · 07-18-2013, 06:35 AM

I do'nt think it will be a100lbs but it could be 40 or 50 lbs with half of that being rotating weight (the rear brakes) I have weight at the rear bumper so thats where I'll add this (2800 min). We have a standard collector on it now, a merge collector is in the plans.I'm also going to raise the front of the car about 1 1/2 " this should make it almost level. I'm hoping the front brakes and raising the front of the car will help the car come out of the lights quicker. Now I have to get the header headers off and to the coater. Robbie

07-10-2013, 06:55 AM	#1
Robbie Welch Live Reporter Join Date: Sep 2005 Location: Golden Beach Maryland Posts: 1,234 Likes: 55 Liked 262 Times in 124 Posts	Re: Header coating Well we got the new headers built and on the car(uncoated). What adifferance they make in the sound of the car. I can't wait until Fridays T&T before the PRO AM to see how it runs. See you there.

07-10-2013, 10:04 PM	#2
69Cobra Senior Member Join Date: Aug 2007 Location: California, Ky Posts: 669 Likes: 61 Liked 2 Times in 2 Posts	Re: Header coating Pics???? __________________ Kris Rachford 69 Cobra 428CJ 4 Speed C/S 3032

07-11-2013, 07:23 AM	#3
Robbie Welch Live Reporter Join Date: Sep 2005 Location: Golden Beach Maryland Posts: 1,234 Likes: 55 Liked 262 Times in 124 Posts	Re: Header coating Kris, I'll take some photos when I take them off after the PRO AM for coating,and report on any performance changes.

07-17-2013, 07:44 AM	#4
Robbie Welch Live Reporter Join Date: Sep 2005 Location: Golden Beach Maryland Posts: 1,234 Likes: 55 Liked 262 Times in 124 Posts	Re: Header coating Well I ran the car with the new headers on it this weekend. As you may know I'm a .90 guy and the results where inconclusive. I ran it off the off on the first run but it wasn't a good clean run and went 10.32 128mph. That seemed a little slow but the mph seemed pretty good for the weather. On the stop it seemed to take quit a bet more to slow the car to 10.90 and it still went 128. I felt like with the weather correction numbers for the weekend it would of run 126 or so in the past? We'll see. I know this isn't the .90 form but you guys seem to respond more . Thanks Robbie. Now to put the disc brakes on. Anyone want to guest what the car will go after that? I'm going from 4 wheel drum to 4 wheel disc.

07-17-2013, 08:38 AM	#6
jmcarter VIP Member Join Date: Dec 2008 Location: Richmond Hill GA (and Port Ludlow WA) Posts: 4,301 Likes: 2,394 Liked 3,196 Times in 977 Posts	Re: Header coating BTW, if you didn't put on merge collectors contact Mark Lelchook for a set of his, you will not be disappointed. __________________ Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table

07-18-2013, 06:35 AM	#7
Robbie Welch Live Reporter Join Date: Sep 2005 Location: Golden Beach Maryland Posts: 1,234 Likes: 55 Liked 262 Times in 124 Posts	Re: Header coating I do'nt think it will be a100lbs but it could be 40 or 50 lbs with half of that being rotating weight (the rear brakes) I have weight at the rear bumper so thats where I'll add this (2800 min). We have a standard collector on it now, a merge collector is in the plans.I'm also going to raise the front of the car about 1 1/2 " this should make it almost level. I'm hoping the front brakes and raising the front of the car will help the car come out of the lights quicker. Now I have to get the header headers off and to the coater. Robbie