Lets discuss headers!

[httrdd]

I am going to custom build long tube headers for my eg33 swaped LGT and I need some info from you guys. So far I found out 1 5/8 tubing is good for stock cams, but will it be good for milld grind cams? I saw the way Svxfiles did his bends and they look realy goood and tight to the body. Next question is how do you calculate fluid dynamics? Is there a certain length these header pipe have to be to flow correctly? What size outlet out of the collector would be the best for n/a? Thanks.

TJ

[ensteele]

I will move this into the right forum. :)

[SVXRide]

OT will be tacking up some unequal length headers that are designed to go with the "special sauce" intake and exhaust cams in RacerX as soon as he gets out from under the mountain of work he currently has. Stay tuned for dyno numbers once I get them TIGed up and installed.
-Bill

[Crazy_pilot]

How long have your "special sauce" cams been coming now Bill? It must be 2 or 3 centuries at least. :lol:

[svxfiles]

How long have your "special sauce" cams been coming now Bill? It must be 2 or 3 centuries at least. :lol:

Yes, Bill is old!Much older than dirt!:eek:
But you have to appreciate his enthusiam, his hope and his drive.:)
He ACTUALLY believes that I will "open the package" and fab his headers....



Hi Bill!:D:p

[Hocrest]

How long have your "special sauce" cams been coming now Bill? It must be 2 or 3 centuries at least. :lol:

He's just waiting for another rainy day...

http://www.subaru-svx.net/photos/files/SUBBYRU89/39418.JPG

[httrdd]

OT will be tacking up some unequal length headers that are designed to go with the "special sauce" intake and exhaust cams in RacerX as soon as he gets out from under the mountain of work he currently has. Stay tuned for dyno numbers once I get them TIGed up and installed.
-Bill

Can't wait to see them when they are finished!

[SVXRide]

How long have your "special sauce" cams been coming now Bill? It must be 2 or 3 centuries at least. :lol:

Chris,
They've actually been installed for over a year now. Unfortunately, they've only got a couple of hundred miles on them (drive out and back to OT's place for an autoX last year, plus some miles up and down Rte 4 here in Calvert County when YT was here to create a 5spd Hydra map).
-Bill

[SVXRide]

[QUOTE=Hocrest;658760]He's just waiting for another rainy day...



Gotta love the Subie rain poncho! :D
-Bill

[LetItSnow]

Gotta love the Subie rain poncho! :D
...suitable for framing, it turns out! :)

[SVXRide]

...suitable for framing, it turns out! :)

Yeah, can you send me a 8x10? :rolleyes::lol:

-Bill

[LetItSnow]

Yeah, can you send me a 8x10? :rolleyes::lol:

-Bill
I don't have one, but I know someone who does.

Incidentally, somebody was talking about cams, which is still off topic: There's been a lot of talk of these and them and those... How many made it to market?

Johnny, the headers might be a better market than the intakes?

[Crazy_pilot]

Chris,
They've actually been installed for over a year now. Unfortunately, they've only got a couple of hundred miles on them (drive out and back to OT's place for an autoX last year, plus some miles up and down Rte 4 here in Calvert County when YT was here to create a 5spd Hydra map).
-Bill

Wicked! I can't wait to see some dyno numbers.

[oab_au]

Wicked! I can't wait to see some dyno numbers.

Yeh, plus 1.:D

Harvey.

[httrdd]

Chris,
They've actually been installed for over a year now. Unfortunately, they've only got a couple of hundred miles on them (drive out and back to OT's place for an autoX last year, plus some miles up and down Rte 4 here in Calvert County when YT was here to create a 5spd Hydra map).
-Bill

Uhh do you have pics? :D

[Crazy_pilot]

Uhh do you have pics? :D

Of his camshafts?

[httrdd]

No the headers installed.

[LetItSnow]

C'mon up for those spraybombs and bring your camera. We'll get the Silver in the air, and you can go crazy!

[httrdd]

Cool man can we fab them there too? ;) I need to get up there again. Awesome area!

[SVXRide]

Uhh do you have pics? :D

I will, once they're actually fabricated. Plan right now is for OT to cut/tack the SS pipe I shipped him, then I'll have my friend who's got the TIG gear weld everything up along with custom collectors (same ones YT used). What I'd like to do is then get each pipe digitized so they can be mandrel bend for future kits (assuming there is a sufficient interest in them -- OT will be the supplier, if he decides he wants to be :))

-Bill

[httrdd]

I will be waiting on those pics then.

Coming across some money so I am gathering materials. I want to make these right with correct flow for maxuim horsepower/torque. Appeciate your guys help. Keep it coming!

TJ

[httrdd]

Found these doing a search on svxworldforums. Nice design, but wonder if they will make a long tube version. I doubt the shortys will give a big performance gain over oem.

http://www.outfrontmotorsports.com/primary_tubes.htm

[httrdd]

Just spoke with the guy and he can get me all the bends together with mild steel for 250 plus ground shipping (about 15 bucks) He will have the flanges, collector, and bends that I request after measuring height and length. He is going to leave the tubes long so I can cut and have the collector tacked in where I want it. Is steel going to be a problem over stainless? Can someone do better for the money? Thanks.

TJ

[Hocrest]

Are you just getting the pieces or will the bends be welded to the flange? Since rails run the engine backwards, I'm guessing the manifolds would normally be pointing the wrong way...

[httrdd]

Are you just getting the pieces or will the bends be welded to the flange? Since rails run the engine backwards, I'm guessing the manifolds would normally be pointing the wrong way...

Trying to get all the pictures and measurements for him and then he will make them. I did not notice the flanges were backwards. I will have to make sure it is right when he makes them.

[Hocrest]

I can't tell from the picture, but looking at the engines on his site, they are all pointed the wrong way. Just make sure when you order that he know you want them pointing towards the bellhousing and not the timing belts ;)

[httrdd]

Where you guys buying your O2 sensors at? OEM?

[svxfiles]

Where you guys buying your O2 sensors at? OEM?

Normally Bosch #13250 at Advance Auto Parts for about $90.00 each.
Some folks buy some NGKs for in the $50 each range, but I have not tried them yet.

[httrdd]

Thanks I know a guy at advance that can get me a killer discount on them.

[Johnybeas]

I don't have one, but I know someone who does.

Incidentally, somebody was talking about cams, which is still off topic: There's been a lot of talk of these and them and those... How many made it to market?

Johnny, the headers might be a better market than the intakes?

I have a design I'm working on, but they were probably going to be done with my turbo piping in a 3 in. outlet not the stock 2.5 not sure what route I'm going right now. I'm currently trying to get the SVX back together so I can compete in the Lap battle at Miller Motorsports Park on the 30th

[httrdd]

Ok I am getting together with a local race shop (drag cars and sprint cars) and building a set of long tubes. I went and started laying out parts need and will post updates for you n/a guys. I bought 2 new o2 sensors and a 2 1/2" high flow cat. Currently looking for mild steel merge colletors. Any of you guys have any or know where to get them for a good price? PM me if you have info.

More updates to come.

[httrdd]

Normally Bosch #13250 at Advance Auto Parts for about $90.00 each.
Some folks buy some NGKs for in the $50 each range, but I have not tried them yet.


Bought Standards for 35 each with lifetime warrenty at A&A Auto. We knew some peeps!

[httrdd]

Found the collectors and ordered. Should be here in a week. Buying the piping tonight.

http://www.coneeng.com/pdf/3-1%20Collector%20Kits%20PDF.pdf

[httrdd]

Flanges are in. They are pretty damn heavy and this mild stell exhaust system is going to add some weight for sure so should be around stock weight.

http://i374.photobucket.com/albums/oo185/httrdd/utf-8BSU1HMDA1NDEtMjAxMDExMjgtMTQwMy5qcGc.jpg

http://i374.photobucket.com/albums/oo185/httrdd/utf-8BSU1HMDA1NDItMjAxMDExMjgtMTQwMy5qcGc.jpg

[httrdd]

Last piece to the puzzle came today! Planning the build next sunday.

http://i374.photobucket.com/albums/oo185/httrdd/utf-8BSU1HMDA1NDQtMjAxMDEyMDItMTk0Mi5qcGc.jpg

http://i374.photobucket.com/albums/oo185/httrdd/utf-8BSU1HMDA1NDMtMjAxMDEyMDItMTk0Mi5qcGc.jpg

[httrdd]

Anything else I need to know about before I start and buld these? I hear the primaries need to be over 30 inches to have any effective gain. Anyone else?

[Johnybeas]

Do you have any idea what you're gonna do or are you just slapping some pipes together and callin um headers? not trying to be mean, just wondering if you're working with the race shop or have anything drawn up on how they are gonna look or if you're just wingin it.

[svxfiles]

Anything else I need to know about before I start and buld these? I hear the primaries need to be over 30 inches to have any effective gain. Anyone else?

According to Burn's Stainless, the primaries should be 30" long,
1.75" od,
1,5/8" id,
with a collecter that is 2.25".
If you have a stock cam.

[httrdd]

Do you have any idea what you're gonna do or are you just slapping some pipes together and callin um headers? not trying to be mean, just wondering if you're working with the race shop or have anything drawn up on how they are gonna look or if you're just wingin it.

We have a basic idea and I stole a bunch of pics of other builds so it should go well. I know from talking to svxfiles there were some requirements. This guy builds all sorts of crazy stuff so I trust he knows what he is doing. This setup is not going to have any flanges. It will have a flex pipe before the cat though.

[httrdd]

Gasket came in today. I almost forgot about them so it was a last minute order and quick shipping. These are from smallcar.com too.

I almost decided to scrap the project due to the time to build them and the cost of parts and labor. Tomorrow the building begins. I expect it will take a couple of weekends to finish the complete exhaust.

http://i374.photobucket.com/albums/oo185/httrdd/utf-8BSU1HMDA1NDUtMjAxMDEyMTAtMTcwNy5qcGc.jpg

[ZephTheChef]

Sweet! Can't wait to see some pics of this going together. Exhaust projects always make me grin.

[Crazy_pilot]

^^ Haha, same. It's one of the things I always volunteer for at the shop. "Oh, that 'direct fit' aftermarket exhaust doesn't really work? No worries, I'll get the chop saw and welder."