 Tangerine EVO, - Six Header Update |
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| ChrisFoley |
 Dec 18 2009, 12:44 PM
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#41
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I am Tangerine Racing  Group: Members Posts: 7,968 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None 
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QUOTE(Sparky @ Dec 17 2009, 06:38 AM)  *SIGH* I was hoping this was the base and collector for that custom hookah I wanted. (IMG:style_emoticons/default/sad.gif) Here are some pics of that custom hookah you wanted Mike (IMG:style_emoticons/default/biggrin.gif) : Attached image(s)    
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| IronHillRestorations |
Dec 18 2009, 12:55 PM
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#42
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I. I. R. C. Group: Members Posts: 6,792 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
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So why up and over the half shafts? Not being critical Chris, just curious. Not knowing any better I'd have thought to mimick the stock914-6 h/e's as they flow so well.
All I know about exhaust is that bigger isn't better, the right size for your engine is better. |
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| JmuRiz |
Dec 18 2009, 01:07 PM
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#43
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914 Guru Group: Members Posts: 5,514 Joined: 30-December 02 From: NoVA Member No.: 50 Region Association: MidAtlantic Region
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I'm guessing it has to do with the desired length of the un-merged pipes....is that correct Chris? I know exhaust tuning on the 2-strokes was a 'black art' maybe there's some of that to 4-strokes too...
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| ChrisFoley |
Dec 18 2009, 03:23 PM
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#44
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I am Tangerine Racing Group: Members Posts: 7,968 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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QUOTE(9146986 @ Dec 18 2009, 01:55 PM) So why up and over the half shafts? Nathan is pretty much on target. I could achieve the primary lengths I want if I stayed below the axles but not the secondary lengths. Tuning both will produce more midrange power. Its still going to be difficult getting the secondaries to the length I desire. None of the other street headers take full advantage of scavenge wave tuning to maximize volumetric efficiency of the engine intake stroke. |
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| ChrisFoley |
Jan 14 2010, 05:41 PM
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#45
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I am Tangerine Racing Group: Members Posts: 7,968 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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Here is the racetrack version of the new header. (IMG:style_emoticons/default/smile.gif)
Attached image(s)  
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| ClayPerrine |
Jan 14 2010, 09:26 PM
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#46
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Life's been good to me so far..... Group: Admin Posts: 15,950 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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Chris,
I can't do what you do, but I do have an observation.... In this pict..... (IMG:http://www.914world.com/bbs2/uploads/post-209-1261161797.jpg) It looks like you didn't leave enough room for the oil cooler, and the header is going to really radiate heat back into it. And you also have the scavange line to contend with. It may be the angle of the shot though..... |
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| ChrisFoley |
Jan 14 2010, 10:50 PM
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#47
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I am Tangerine Racing Group: Members Posts: 7,968 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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QUOTE(ClayPerrine @ Jan 14 2010, 10:26 PM) It may be the angle of the shot though..... Its just the angle of the shot. There is plenty of clearance to the cooler and the hard line. (IMG:style_emoticons/default/smile.gif) |
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