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Joined: Dec 2002
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Hard-core CEG'er
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Hard-core CEG'er
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Originally posted by Stazi:
Note:
304 and 304L are both slightly magnetic, which can be relieved after heating, so once they been run on a car above 700�°C they'll lose magnetism.
The 304L is lower carbon 0.03% vs 0.15% for regular 304.
The lower carbon in the 304L is better for welding (due to a lower precipitation of carbides).
304L is softer (Brinell 140) than 304 (Brinell 150) by a smidge and also has a lower tensile stregth of 80ksi vs 85ksi.
304 or 316 SS is barely magnetic....409 SS is damn near like normal mild steel in magnetism. 304 or 316 SS is very easy to weld...even 409 is easy to weld.
I would still rather have a coated header inside and out like mine to help dissipate the heat out of the engine bay. My car ran much cooler when I installed my headers compared to the stock manifolds.
yes Greg the poor weld quality on the outside could still have good penetration/ interior weld quality. BUt I highly doubt that inless they back purged the welds and had excellent fitment priot to welding. And considering MIG weldings inability to penetrate the base metals and only fuse on top. I'm not impressed by weapon rices attempts.
06 GMC Sierra 2500HD Dmax/ally
06 Pontiac G6 GT
05 CRF250R
FOR SALE 06 KX65 with riding gear $2700 obo
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Joined: Nov 2000
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Hard-core CEG'er
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Hard-core CEG'er
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I see no porosity or slag in the weld beads so it seams that the penetration was good.
If the MSDS headers are TIG'd, are you sure they capped the headers and filled them with the welding gas also? That's the only way to promote good internal penetration, and I highly doubt they did that.
The weld on the W-R's look fine. And being somewhat of a welding buff from my days or working in the mines, I can say that they would pass any piping standards.
Last edited by Stazi; 04/19/05 12:21 PM.
2000 SVT Turbo 295hp/269ftlb@12psi
#1 for Bendix Brakes Kits!
Knuckles rebuilt w/new bearings $55
AUSSIE ENDLINKS $70
Gutted pre-cats $80/set
A lack of planning on your part does not constitute an emergency on mine!
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Joined: Mar 2003
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Originally posted by Stazi:
I'll see if our metallurgists can confirm the material through non-destructive testing. 
You might not need to do that if there is a big difference in material cost between 304 & 304L...
Must be that jumbly-wumbly thing happening again.
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Joined: Nov 2003
Posts: 8
Newbie
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Newbie
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Material is 304 SS.
At this time our company has the last 14 pairs of headers instock for the next 60 days. Any items you see on ebay will be backordered for atleast T-60 Days due to the current backorder status from the manufacturer.
Thanks
James
CustomCougars.Com
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Does this mean that if we order a set NOW that they won't be backordered for 60 days?
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From him yes, from eBay you wait...that's how I'm reading it.
2000 SVT Turbo 295hp/269ftlb@12psi
#1 for Bendix Brakes Kits!
Knuckles rebuilt w/new bearings $55
AUSSIE ENDLINKS $70
Gutted pre-cats $80/set
A lack of planning on your part does not constitute an emergency on mine!
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Joined: Dec 2002
Posts: 3,887
Hard-core CEG'er
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Hard-core CEG'er
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Originally posted by Stazi:
I see no porosity or slag in the weld beads so it seams that the penetration was good.
If the MSDS headers are TIG'd, are you sure they capped the headers and filled them with the welding gas also? That's the only way to promote good internal penetration, and I highly doubt they did that.
The weld on the W-R's look fine. And being somewhat of a welding buff from my days or working in the mines, I can say that they would pass any piping standards.
MSDS are wire welded also. I have no idea if Marty back purges them, but I know they are welded rather solid form the bead size. Visual inspection is one thing but actual break testing, porsity etc testing I dunnno. If they had porsity problems with those weapon R headers then they are defianately using either 409 or a very low low grade SS. ON the inside of the pipes how do the welds look? If they where back purged they should look like a perfectly smooth bead. At least thats what I see everytime someone does that kind of welding.
06 GMC Sierra 2500HD Dmax/ally
06 Pontiac G6 GT
05 CRF250R
FOR SALE 06 KX65 with riding gear $2700 obo
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I have 13 sets of headers instock. Direct from WR they are the last sets in the USA till the next shipment from them in about 60 days.
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Joined: Apr 2005
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I work at Weapon*R and i just logged in to clear up a few things.
Our Welds Are Not "Back Purged".
Our Welds are Wire Fed, Stainless 304 Steel Wire.
Our Materials ARE " 304 From Flange to Flange ".
Notes:
These are some things " I " have encountered in my racing experience.
* Steel or Coated steel will Rust regardless.
* Steel or Coated Steel will Rust faster is wrapped.
* Some companies Coat their headers to cover up their sloppy welds.
* Some Companies Use Steel Chrome PLated Flanges with stainless tubes, and still say it's a stainless header.
* Back Purging headers before/ after / and during welding headers does help, but not for a header at this price.
* By the look of the MSDS header it is also MIG WELDED and Not back purged.
We do Tig Weld & Back Purge our " RACE HEADERS ".
We do build and support race cars in the Asia Supercar Series, and now the USTCC..
You can go to our website and see some of the racecars or streetcars we helped build or have built.
If anyone has any questions, please feel free to email me.
thank you.
Leo Now
Weapon*R USA
R&D FAB SHOP Manager.
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Well, I guess he told you guys...
Must be that jumbly-wumbly thing happening again.
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