DatRat Posted June 19, 2013 Share Posted June 19, 2013 Those that have a stahl header on your engine, could you tell me the length of the primaries? This info is not on their web site. Thanks in adavance Quote Link to comment Share on other sites More sharing options...
Xnke Posted June 25, 2013 Share Posted June 25, 2013 It is whatever you want them to be. Stahl no longer sells that header as an assembled item, to my knowledge. Quote Link to comment Share on other sites More sharing options...
johnc Posted June 25, 2013 Share Posted June 25, 2013 For an engine in the 2.5 to 3L range the primaries should be 28 to 32" from the back of the exhaust valve to the last point of merge in the collector(s). Longer then 32" is better then shorter then 28" if you need to compromise. Quote Link to comment Share on other sites More sharing options...
DatRat Posted June 27, 2013 Author Share Posted June 27, 2013 Thanks, that's the info I was looking for. Quote Link to comment Share on other sites More sharing options...
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