Another reason why the stock headers just suck...
Registered User
Joined: Jan 2006
Posts: 5,710
From: MPLS, MN USA
Rep Power: 466
I want to dig up all the comments and advice on how everyone should
keep their stock headers for anything up to 600 HP...?
I will make a blanket statement, headers (that flow better than stock headers) would help just about any
mod where you are trying to improve flow thru the "air pump"
Wow, Sharkey
that pic is "priceless" (for you!)
thanks,
Marty k
keep their stock headers for anything up to 600 HP...?
I will make a blanket statement, headers (that flow better than stock headers) would help just about any
mod where you are trying to improve flow thru the "air pump"
Wow, Sharkey
that pic is "priceless" (for you!)
thanks,
Marty k
Last edited by WOODTSTER; Dec 14, 2006 at 05:05 PM.
Registered User
Joined: Feb 2005
Posts: 4,660
Rep Power: 254
Marty, it isn't about just keeping the stock headers...they need to be ported (reamed) and polished. If you do this they are good to 700hp. The length of the stock headers is, to my knowledge, the best out there. You do not want to add length...girth maybe, but not length.
Registered User
Joined: Jun 2006
Posts: 706
From: Sweden
Rep Power: 51
Originally Posted by oak
I have a blanket statement, everyone go out and get a set of headers! you need these! badly. the fact headers are soooo choked down. sharky is now taking orders...
Registered User
Joined: Jul 2005
Posts: 429
From: Porto/Portugal
Rep Power: 38
Originally Posted by 996TT_STEVO
Just a thought sharkster, I de-bured my headers, but can these be welded from the outside (outer) so that I can take an extra 1-2mm off again?
Hope you get what I mean!!!
Hope you get what I mean!!!
P.S. Did you port and ceramic coated them or just ported? Did you notice a difference?
Registered User
Joined: Oct 2005
Posts: 5,522
From: NW
Rep Power: 275
Originally Posted by fdb996c2
Hate to display my ignorance, but what exactly is done when a header is "ported"? I think I get the polished bit.
Registered User
Joined: Feb 2005
Posts: 2,841
From: NY & UK
Rep Power: 171
Originally Posted by kiko
It has been discussed and its general acceptance that the outside welding will make them crack right next to the welding. Kevin says that you can remove up to 90% of the welding.
P.S. Did you port and ceramic coated them or just ported? Did you notice a difference?
P.S. Did you port and ceramic coated them or just ported? Did you notice a difference?
Registered User
Joined: Jul 2005
Posts: 429
From: Porto/Portugal
Rep Power: 38
Originally Posted by 996TT_STEVO
Hey Fran, No I removed about 50% and polished inner, I dont believe in coating the headers, don't want to go into that to long, lol
Ok. With or Without coating did you feel the difference in spooling or not?
Registered User
Joined: Jul 2003
Posts: 5,373
From: Vancouver & Seattle
Rep Power: 287
I can't understand why Porsche would even but a header like that on their flagship 911 (sans the GT2).
If the company can make the rest of the engine - calculations, manufacturing, metal tolerances, etc... Why would they cheap out on the headers?
Encourage aftermarket support??
To detune their engines?? But simply lowering the boost from the factory could do this.
Just confused, because it doesn't seem like a proper set of headers would be hard for them to make.
If the company can make the rest of the engine - calculations, manufacturing, metal tolerances, etc... Why would they cheap out on the headers?
Encourage aftermarket support??
To detune their engines?? But simply lowering the boost from the factory could do this.
Just confused, because it doesn't seem like a proper set of headers would be hard for them to make.
Last edited by WyattH; Dec 14, 2006 at 11:57 PM.