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Old 04-09-2011, 03:56 PM
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SD421 SD421 is offline
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Join Date: Jan 2005
Location: Concord,CA
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Quote:
Originally Posted by bonneville Joe View Post
This is just from my welding experience, and I've never welded headers but the only way I could see this method working is if you have a TIG welder. Most custom header builders use TIG. It's tougher to use, takes more skill and takes longer but the payback is the weld is much cleaner and cooler. The key is the cooler part. MIG welders heat the metal much more rapidly which distorts it. It would have to be in a jig to MIG weld it to keep it all uniform to its intended shape.
This is the reason why you need the jig. The headers have been Mig welded & not Heli Arc'd (Tig Welded).

Bonneville Joe hit the nail on the head.

Don

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1966 GTO

1966 421-10.1-1 comp-Race Tec 23cc Pistons
KRE Tri-Power
KRE 65cc Aluminum Heads
XE274 cam by Comp Cams
DUR 230 Int 236 Exh @.050 - 110 LSA
LIFT .491" Int .491" Exh
Tri-Y-Headers by Tribal Tubes w/ Goerlich Mufflers
1966 Muncie Wide Ratio 4-Speed
1968-72 Chevy 12 Bolt Rear End w/ 3.73 rear gears