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gianttomato
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Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts....	Wed, 13 October 2004 13:05

Just as an aside, with my 2JZGE running 48mm throttles, extractors and standard internals, the peak power shifted up the rev range. Peak power is made at 5500rpm with the standard motor, yet mine peaked at 66-6700 (but sharply dropped off thereafter). The best gains were with the torque - tractive effort (as a surrogate of torque) was flat from 3000 right thru to 6000 rpm. The distance from the valve to the throttle plate is approximately 250mm (80 + 170), and the distance from the throttle plate to the bellmouth is 120mm. I didn't deliberately pick these - it's just how it worked out with the bits I had. I haven't played with throttle diameters, but I suppose if you really wanted, we could put it on a dyno and you could see what the pressure drop across the throttles is. For what it is worth, that 400hp 2JZGE runs 55mm throttles. I don't have enough space in the engine bay to lengthen the trumpets without modifying the inner guard. Anyway come have a look when you get here. [Report message to a moderator]

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Read Message ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Mon, 11 October 2004 14:59
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... oldcorollas Mon, 11 October 2004 15:13
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Mon, 11 October 2004 15:16
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Mon, 11 October 2004 15:23
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... bbaacchhyy Mon, 11 October 2004 21:25
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... takai Mon, 11 October 2004 21:43
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... bbaacchhyy Mon, 11 October 2004 22:15
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Steve_Reynolds Mon, 11 October 2004 23:10
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... gianttomato Mon, 11 October 2004 23:22
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Ben Wilson Tue, 12 October 2004 05:25
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... gianttomato Wed, 13 October 2004 13:05
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... thechuckster Wed, 13 October 2004 13:38
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... oldcorollas Wed, 13 October 2004 13:51
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Wed, 13 October 2004 14:45
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Wed, 13 October 2004 14:48
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Wed, 13 October 2004 15:04
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Wed, 13 October 2004 14:58
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Wed, 13 October 2004 15:06
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Wed, 13 October 2004 15:07
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Wed, 13 October 2004 15:30
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Wed, 13 October 2004 15:40
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Wed, 13 October 2004 15:40
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Wed, 13 October 2004 15:42
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Wed, 13 October 2004 15:45
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Wed, 13 October 2004 15:50
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... bbaacchhyy Wed, 13 October 2004 21:36
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Thu, 14 October 2004 01:34
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... bbaacchhyy Thu, 14 October 2004 02:08
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Thu, 14 October 2004 02:26
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... moo4AGZETA22 Thu, 14 October 2004 02:49
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... bbaacchhyy Thu, 14 October 2004 03:09
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... gianttomato Thu, 14 October 2004 03:52
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Thu, 14 October 2004 04:15
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... gianttomato Thu, 14 October 2004 04:27
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... bbaacchhyy Thu, 14 October 2004 05:06
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... gianttomato Thu, 14 October 2004 05:21
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... bbaacchhyy Thu, 14 October 2004 05:32
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... boxh34d Thu, 14 October 2004 12:21
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 00:22
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... justcallmefrank Fri, 15 October 2004 00:39
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... mrshin Thu, 14 October 2004 12:54
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... RWDboy Thu, 14 October 2004 14:51
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Thu, 14 October 2004 15:17
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... gianttomato Thu, 14 October 2004 21:25
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Thu, 14 October 2004 23:42
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 00:33
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 00:46
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... justcallmefrank Fri, 15 October 2004 00:50
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 00:51
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... justcallmefrank Fri, 15 October 2004 00:56
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... justcallmefrank Fri, 15 October 2004 01:00
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 02:35
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... SupraPete Fri, 15 October 2004 02:55
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... SupraPete Fri, 15 October 2004 02:45
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 02:59
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 03:01
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... SupraPete Fri, 15 October 2004 03:11
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... SupraPete Fri, 15 October 2004 03:21
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... SupraPete Fri, 15 October 2004 03:14
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... RWDboy Fri, 15 October 2004 03:19
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 03:26
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... SupraPete Fri, 15 October 2004 03:28
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 03:35
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... gianttomato Fri, 15 October 2004 03:55
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Fri, 15 October 2004 04:44
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Fri, 15 October 2004 04:50
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... CelicaRA45 Sat, 16 October 2004 03:38
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... mrshin Sat, 16 October 2004 13:30
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Sat, 16 October 2004 13:55
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... mrshin Sat, 16 October 2004 14:37
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... RWDboy Sun, 17 October 2004 08:29
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Sun, 17 October 2004 10:12
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... RWDboy Sun, 17 October 2004 11:12
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Sun, 17 October 2004 12:13
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Sun, 17 October 2004 13:19
Read Message Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... ed_ma61 Sun, 17 October 2004 22:55
Re: ITBs & Port X-Sectional Areas + Lengths : Your Thoughts.... Bill Sherwood Mon, 18 October 2004 02:40

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