991.2 base with fabspeed headers+sport cats
#31
Man that pic made me spit out my afternoon java bump I'm flattered you think we'd buy by the ton in unprocessed raw stock. If memory serves me correctly, North America has 2 mills that produce 321 tube from raw stock. I have no plans for being number 3, but that would be one hell of a goal!
Here's a couple quick screen shot from a couple popular tubing suppliers showing a common size & bends in both 304 and 321. We don't buy or sell 'standard' elbows but this gives you an idea of the price differences and range.
Here's a couple quick screen shot from a couple popular tubing suppliers showing a common size & bends in both 304 and 321. We don't buy or sell 'standard' elbows but this gives you an idea of the price differences and range.
#32
The Cup and RSR cars are naturally aspirated though compared to the turbo 991.2 Carreras For a street car that isn't driven hard, I agree, 304L is fine. For a car driven hard, 321 is more robust. I'm surprised though that Cup and RSR cars would use 304L. Even NASCAR uses thin-wall inconel. Oh man, the old F1 super thin wall inconel headers on the 20,000rpm V8s were something else! Of course, those were only designed to last one race using extreme thin wall to save weight. And I know this is slightly derailing, but on the topic of weight savings, Gordan Murray's T.50 is an exercise in weight shaving. The pedals went through a few design iterations which removed 300 grams.
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