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10-01-2006 #1
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PHR tests correction factor, 'splain please.
Disclaimer: I am a geek.
That said......
I have a couple of questions regarding the different correction factors in use.
SAE J-1349 assumes 77degf and 29.92"hg
SAE J-607 assumes 60degf and 29.22"hg
Why?
Given that the avg. temp is about 62degf and the avg bar-alt is 29.921"hg it seems that both correction factors are less than representative of what an engine might see.
Also, in the lead photo used in your dyno test article this month the operators screen is reading 29.08"hg wassupwithat?
True T.
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