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-   -   How to measure SSIs to determine diameter? (http://forums.pelicanparts.com/porsche-911-technical-forum/769971-how-measure-ssis-determine-diameter.html)

spsfiend 09-06-2013 01:30 PM
How to measure SSIs to determine diameter?
 
Hey folks,

I spent some time using the search tool and did not yield the results i was looking for. Could someone tell me where one can measure SSIs to determine what diamter headers they are / whether to measure the inside or outside diameter?

Greatly appreciated.

Bill Verburg 09-06-2013 01:37 PM
Quote:
Originally Posted by spsfiend (Post 7642557)
Hey folks,

I spent some time using the search tool and did not yield the results i was looking for. Could someone tell me where one can measure SSIs to determine what diamter headers they are / whether to measure the inside or outside diameter?

Greatly appreciated.
the primaries are 1 1/2" OD(38mm), 1 3/8"ID(35mm)
the collectors are 2" OD(51mm), 1 7/8" ID(42mm)

spsfiend 09-06-2013 01:51 PM
Thanks Bill! Much appreciated.

911pcars 09-07-2013 07:07 AM
Careful. I've noticed some header retailers describe the tube size but don't indicate whether it's an ID or OD measurement. Makes a difference.

Sherwood


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