Short answer is no , because it way difficult to calculate the average wall temps due to the temp/area problem , plus you are measuring outside.
As I have such a huge database of pipes and engines that have been thru the sim , build , dyno process , it was easy to check backwards from the dyno result to see what
average wall temps were being generated with my self impossed "tuning target " of 620*C in the header.
Some engines made best power at 650 in the header , but using a simple ratio increasing by 650/620 worked just as well.
In the case where using really good fuel ( 110 leaded ) allowed 680*C on track ( SKUSA ) the pipes designed for 620 simply reved to the moon , but this proved to be a huge tuning aid in that we could use
the gained rpm range to go faster on the same gear , or re gear it to gain off corner acceleration with identical terminal speed.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
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