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Turbo header

This is a discussion about Turbo header within the Turbo Nitrous section, where you will Drag Racers sharing info on Turbo and Nitrous applications; Originally Posted by shoyass Nice fab work. 16" front wheel? yes 16" front wheel and rad in the subframe

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    Quote Originally Posted by shoyass View Post
    Nice fab work. 16" front wheel?
    yes 16" front wheel and rad in the subframe

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    Quote Originally Posted by 1397BusaDK View Post
    0.079". Or 2 mm
    If you made it that thin, you definitely MUST support the turbo with additional brackets. And even then, you will probably have cracking problems. Most headers used by the motorcycle racers where the turbo is only supported by the header itself are using schedule 40 pipe, which is about .140" if my memory is correct.
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    After thinking about it for a few minutes and looking up the size to verify, a lot of builders are also using schedule 10 SS pipe, which is still about .109" thick. Either way, .079" is likely to give you problems without additional support.
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    I made this header last year and it has not given me any problems, somewhere I read that NLR uses ss 321 0,109 thickness when he's doing headers.
    mine is made ​​of ss 316, I do support bracket for turbo
    I had a header from the engine head and it had wall thickness was approximately 1.6 mm.

    I have already received suggestions from psycho bike members, so my plan is to run it in 2013 and then build a new one next winter with all the improvements in ss 321 0,109

    how many mm is ss10 externally ?



    Quote Originally Posted by 1397BusaDK View Post

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    sorry , the header was from motorhead or velocity

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    Quote Originally Posted by 1397BusaDK View Post
    I made this header last year and it has not given me any problems, somewhere I read that NLR uses ss 321 0,109 thickness when he's doing headers.
    mine is made ​​of ss 316, I do support bracket for turbo
    I had a header from the engine head and it had wall thickness was approximately 1.6 mm.

    I have already received suggestions from psycho bike members, so my plan is to run it in 2013 and then build a new one next winter with all the improvements in ss 321 0,109

    how many mm is ss10 externally ?
    It depends on which size you are talking about. Pipe sizing such as schedule 10 is odd. For instance, 1.5" sch 10 is not 1.5" in either the OD or ID. It is instead 1.900" (~48mm) and 1.682" ID (~42mm) which gives a .109" wall. 1.25" Sch 10 is 1.660" OD (~42mm) and 1.442" (~37mm) ID also for a .109" wall. Note that not all sizes of Sch 10 have the same wall thickness. Once you move into smaller sizes the wall thickness drops, and bigger sizes the wall thickness increases.

    As for a Velocity header, the early ones were made with thin material and were very prone to cracking. Later on, they moved to something thicker, I believe it was Sch 10 like everybody else
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    I think there are only a few using sched 10 pipe , NLR for example
    others still use tube, properly made works fine in most applications , but i remember back when some were not purge welded
    you get what you pay for, stg 1 are made to a price
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    I don't think Velocity uses pipe. Maybe 321 tube.
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