Guys with headers,

A6 All/ S6 All
#1

When i pull my engine next year for some resealing, i would like to do the headers (this is for an s8)
my only concern with them is the radiant heat. the stock ones have a very nice isolite air gap heat shield molded around them, vs the fabbed ones are just bare steel, which would drive underhood temps up even more.
Does anyone have theirs ceramic coated? How are the intake or inlet temps with uncoated headers?

I do not want to wrap them as 1) little room 2) wrap holds moisture. Fine for a race car, not a daily in 4 seasons.

#2

I’m not sure I’d be concerned about the wrap. The headers get wrapped before the engine is installed back into the car, so no issues with room…unless you saying the additional thickness could not be accommodated underhood. If that’s what you’re saying, any wrap thickness shouldn’t be too much. And, the engine is protected from the elements with the engine undertray, so no issues with moisture. Just my thoughts…

#3

you will get moisture just from condensation from heating/cooling. Just seen it too many times on other cars and dont want it on this one. I know wrap works well for keeping temps down but it really is more for a race/non daily car.
Ceramic coating seems like the way to go. Virtually no thickness change, preserves the nice beauty of the headers (not that you can see them from up top), wont hold moisture. IIRC a set of v8 headers is approx 300ish to get ceramic coated. I may be lying… but reports are that header surface temps are reduced approx 50% from non coated

#4

I got my V8 headers ceramic coated, then wrapped them with header wrap, and then put additional heat insulation over that. Doesn’t hold water and the pipes are cool enough that I can touch the insulated parts with my hand. I think that you are over thinking this.

#5

Will the headers be stainless steel? Dei titanium wrap is what ive always used on my turbo cars’ downpipes…DD’d with no undertray anymore

#6

If I ever end up getting headers, I’ll be contacting you about doing the same for mine.

#7

Ok, simple enough. Jet-Hot does the 1300° coating for cheap in NC so the turnaround time would be very little.

#8

I just wrapped mine. I have had wrap on mine for man 6 years or more now no issues. Greg I have no idea what your refrence is with wrap but whats currently offered on the market today is obviously not what you might be aware of because mine and I know about 20 other 4.2 header guys who have done the same thing as me and jimmy with the wrap with no issues going on 6 or 7 years now.

I have helped on some cars with jet coating and that seems to do well. However for best results I find wraping drops temps by the most over all.

on the grand scheme of tings the headers are just like the stock manifolds they are mostly tucked under the frame rail and dont have a huge impact on temps when you consider the pre cat canister contains the most amount of heat. Just doing pre cats on a 4.2 S4 drops under hood temps slightly as some have reported. I always felt I could tell the difference in underhood temps on cars without them but since there hasnt been extensive testing its hard to say.

#9

Jimmys set up is impressive and a strong combination of just about every option you can use.

The headers are 3 series stainless thick wall. Titanium wrap is good stuff. If I had to do mine again thats what I would use. My wrap has been flawless but as a upgrade to what I have the titanium wrap is good stuff

#10

maybe I am over thinking it. My experience with wrap has always been on domestics with mild steel or “stainless” steel headers. The stainless headers are 300-500 bucks a pair for long tubes so obviously they are not high quality…

#11

I think I know what your talking about. With cheap only by name stainless steel the stainless has so much nickel and 4 series mixed in the nickel starts to change color. Its really the cheaper material you get cheap material for 500 bucks. I think the material for my V8 headers was probably twice that or more and that’s just for the raw material.

So with the right parts wrap is good but if you really like the look the coatings can be impressive.

#12

So, does anyone know how much the headers will be whenever they come out? Maybe I’ll be ready in 6-9months lol

#13

And does anyone know is the s6 headers would be a direct fit in the s8?
I know header back would be all different, and I would have no problem welding up a 2.75" system myself for the s8, but there is alooot of time in the header work for development which I would not attempt myself.

#14

I’m interested in headers too. I’ve seen some references to headers in various threads, but have not picked up on the whether there is a plug-and-play source available for these. I suspect I have some engine-out service looming around the corner, and that would be the time to do it.

(Sorry, for tangent, Greg5OH)

#15

The headers are made by Countvohn and he and his team have been making headers for Audi cars for about 10 years but they actually test to make sure they make power and its not just longer runners.Some china looser tried to knock off the 4.2 headers countvohn made but when the china headers were tested they actually made less hp then regular down pipes where the countvohn headers made 50whp and 50wtq

From the video here
http://audirevolution.net/videos/198/audi-v10-s6-w-headers-and-catback

They clearly work for the v10

I had Countvohn make me a set of headers for my s4 and they made a world of difference. Later his team went on to make headers for JHM to sell to the public.

I would have to go back and look at the header built thread. I remember V8A6 had a build thread where he talks about prices. There not cheap from what I remember. 321 stainless military grade steel and several hundred hours of work to make as they have to build them off a car and they have bends that cant be duplicated on a bender. Not to mention the tolerences are incredibly close so there is little room for error.

I think the price was 4500$ but that was because they were building a few sets off a car. You would think if they built a jigg and did several sets that price would drop. but when you see them its a lot of work so I dont know.

basiclly headers are built by him and he already works in the experimental division at ford so he is very busy. You can send him a pm I know if you look he has several project threads where he has built custom parts for people but if he is busy or is already working on a project he usually wont respond as from what I know. He only takes on the work he can handle and wont even talk to new potential custoemrs if he is already building something for someone else.

Thats what I know

#16

Good to know there are options. If the price came down from there some, I’d be a potential buyer and I’m sure others would too. I don’t like the idea of having my car down indefinitely to accommodate all the test fitting, although I recognize with the tight space and complexity it is necessary.

With a jig, laser measurements and a CNC mandrel bender perhaps the price could come down eventually? They are beautiful works of art for sure, and I can only image the incredible amount of skill that goes into a set. I would love to see these proliferate…

#17

v8a6
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Re: the v10 s6 project
« Reply #109 on: May 15, 2015, 05:08:52 PM »
Quote

v10 S6 HEADERS - INTRODUCTORY PRICING

I just got the price today from the fab shop. Regular price for the headers will be $6899 (if available in the future). But, anyone who orders by June 30th, will get them at a special introductory price, which is our cost. PM me if you want details.

This may be the only time to get a set. As mentioned earlier, if we can acquire another v10 S6, then we may build more in the future. However, there is no guarantee that will happen. And obviously, in the future, the price will be much higher.

I am allowing the shop to use my car now, while the engine is out, to build these sets. This will delay me getting the car back an extra three months. In the meantime, I’m paying $200 bucks a month insurance on the car, but I’m not passing on this cost to the consumer. Ill cover the costs, so that people can have a chance to get a set beautiful headers at the lowest price possible.

Cheers!

« Last Edit: May 15, 2015, 05:10:37 PM by v8a6 »

COPIED FROM V8A6`s v10 thread

#18

I think with the amount of work that goes into these it won’t ever be a really low budjet option. Its good to know that they make proven hp. When you factor in the fact that they need to pull a motor and then build the parts that might have been part of the reason the prices were what they were.

I think a jig would deffinitly be needed. This is what they did with the 4.2 S4 headers and it worked very well. I know for almost 100% sure the mandrel bender is out. To make all the bends needed the bends are too tight and quick to have a bender help as there is no spot for the bender to clamp onto the bender would have to clamp on where the bend is…

Overall I think the headers are the gap closer to getting these motors in line with the lambo hp figures but as we have seen with the 4.2 you have to do it right. just having longer pipes dosent make headers make power. So headers for the sake of headers are not going to get you there. These headers make power but to make that power they are clearly difficult and time consuming those two things don’t make for low cost products.

It will be interesting to see what the future holds.

#19

Great find. I remember now seeing that. WOW two years ago. I remember a few guys saying that 6800 was a great price considering what V10 headers cost for a BMW or the MERC cars. I suppose since Countvohn is the one that makes these we will have to wait to see what he has to say if anything.

#20

Yeah for $7k, i guess it would be best to just wait and get the supercharger kit whenever that’s available. I think we can get the price down if we can get a set done or take off a donor car to have laser scanned. From there we can have them redone at a slightly lower price point I’d think. Problem would be that there may not be enough clientele for that process to make sense…