[B][You've hit the nail on the hear re the warped manifolds - they do use a jig /B]
Yes for sure they use a jig to make it ,but ,they do not then stress relieve it AFTER welding by heating ,still in a jig ,all up evenly in a big oven +then cool it slowly
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when the flag drops the bulshit stops.
owner of GMC motorsport 01671404030/01671403699
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