Jerryl
Tall Unvaccinated Chinese Guy
- Joined
- Dec 14, 2004
Getting ready to install a set of TA SS headers and . . . My second job as a Buick aftermarket parts field quality inspector forced me confirm flange flatness. Noticed that the flanges on BOTH sides are bowed out in the middle about 0.023".
Fwiw:
I read lots of threads on TA headers and not much info on flange sealing issues. These headers have the slotted holes in the turbo mounting flange.
Called TA to discuss *this* specific concern and was told:
1-Flange gaskets MUST be used. (This is not an option and understand why.)
2-Flanges "should pull in" when bolted onto the head. (Thinking about this one . . .)
3-If the headers don't seal with gasket they need to be resurfaced.
4-Flanges are checked after welding and corrected as needed.
Is there any field feedback on this issue ? Anyone confirm flange flatness and bolt on as is, and did they leak? Hate doing s*** twice.
Fwiw:
I read lots of threads on TA headers and not much info on flange sealing issues. These headers have the slotted holes in the turbo mounting flange.
Called TA to discuss *this* specific concern and was told:
1-Flange gaskets MUST be used. (This is not an option and understand why.)
2-Flanges "should pull in" when bolted onto the head. (Thinking about this one . . .)
3-If the headers don't seal with gasket they need to be resurfaced.
4-Flanges are checked after welding and corrected as needed.
Is there any field feedback on this issue ? Anyone confirm flange flatness and bolt on as is, and did they leak? Hate doing s*** twice.
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