yankeedoodoo Posted April 12, 2012 Share Posted April 12, 2012 I have a Raceline zetec of about 210 HP with Jenvey twin TBs and 90mm trumpets. My questions are whether longer trumpets are available and whether there is any performance to be gained by using them. Also, what is the best air filter to use with longer trumpets; I'm currently using a large ITG box. Thanks to all who offer any thoughts or comments! Link to comment Share on other sites More sharing options...
Neil66 Posted April 12, 2012 Share Posted April 12, 2012 I think Dave Walker of Emerald has an article on trumpet length - have a surf on his website ;) Yup here it is ;) Edited with link. Edited by - Neil66 on 12 Apr 2012 20:17:51 Link to comment Share on other sites More sharing options...
Drumster Posted April 12, 2012 Share Posted April 12, 2012 I have Emerald's adjustable length trumpets and when I went to a Rolling Road session recently my Raceline Zetec on TBs made just 190bhp, but the torque figure was 167lbft at just 4,700 revs. This was with the trumpet length set at 140mm!!! As a result I'm using Pipercross double foam filters. Photos here Dave Walker's article Link to comment Share on other sites More sharing options...
yankeedoodoo Posted April 16, 2012 Author Share Posted April 16, 2012 Gents: Thank you very much for your swift and useful answers. If you get to San Diego, CA I'm good for a beer and a blat! Link to comment Share on other sites More sharing options...
BBL Posted April 17, 2012 Share Posted April 17, 2012 Quoting yankeedoodoo: Gents: Thank you very much for your swift and useful answers. If you get to San Diego, CA I'm good for a beer and a blat! Link to comment Share on other sites More sharing options...
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