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Old 01-29-2021, 08:36 PM   #7
joespanova
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Join Date: Jun 2011
Location: Ga.
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Default Re: Length of header primaries

Quote:
Originally Posted by Adger Smith View Post
Joe,
You are correct about the reading... & I am like you on the range of pipe length. I would say hit in there some where in his range. That is exactly how I had my headers built for my V-6 in a Gen 3. Even the steps vary some. They seem to work well. After all the header is just Rocking the TQ Curve up or down...
2 " on a 32" pipe is about 6%.. off the top of my head..
I talked to Calvin for about 30 minutes today......great guy , really knows his header design....fun talking with him. He asked me how I found him...I dropped your name , he knew / knows of , you.
In summary , he suggest more emphasis on the collector ( make that a merge) as a way of influencing the relationship between a primary too short or too large and its connection to recovering torque (in the event of too large a primary )...or , a smaller collector.
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