Subject	I didn't measure exactly. But port sizes on modern engines
Posted by	MixManMash on February 01, 2016 at 8:51 PM
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In Reply To	how much more massive, proportionally speaking? posted by LJZTT on February 01, 2016 at 07:38 PM
Message	have gotten bigger for the same displacement. This helps with better power/torque at low RPMs, especially on turbo engines. The spoolup on the GTR is ridiculously quick looking at dyno charts and a lot of it can be attributed to cylinder head design (specifically the ports). For a better comparison, it would be very interesting to compare cylinder heads of the new VR30 to the VG30. A really good example is to compare a 4.3L Vortec V6 from GM circa 2000 to their latest version of this same displacement. Way more power and torque all over the RPM range. It is like the 5.7L V8s of 15 years ago.
Follow Ups	GTR - 300ZX plenum comparison - vorpalZ 10:33:29 02/01/16 Nice! If only the VG had heads like the VR... - The Hawk 10:39:43 02/01/16 Yep. I looked in the lower plenum at the cylinder heads of - MixManMash 11:02:24 02/01/16 how much more massive, proportionally speaking? - LJZTT 19:38:23 02/01/16 I didn't measure exactly. But port sizes on modern engines - MixManMash 20:51:23 02/01/16 Also has to do with variable valve timing (n/m) - ztunerz 20:51:48 02/02/16 For sure. VVT sure has changed from the days of VTC. (n/m) - MixManMash 10:10:04 02/03/16 I don't have specific #'s but...... - The Hawk 12:39:57 02/03/16 Isn't that kind of what I said? (n/m) - MixManMash 15:10:39 02/03/16 Yes and I was just elaborating.... - The Hawk 18:00:08 02/03/16 Thanks for posting...always curious about that (n/m) - Madhatter10-6 10:44:14 02/01/16 Very cool to see! - Polish 11:07:22 02/01/16 Are the holes the top/end of each runner for idle air? - cherry 12:12:50 02/01/16 good question.. or egr...pcv... (n/m) - LivinTheDream 15:04:05 02/03/16 Thanks for posting!! (n/m) - OverZealous (CT) 19:02:58 02/01/16 Re: GTR - 300ZX plenum comparison - induetime 10:04:14 02/02/16 Z32 plenum was designed for the NA and works fine for - not4resaleZ 14:02:39 02/02/16 Re: GTR - 300ZX plenum comparison - Bigwill837 14:11:35 02/02/16 The phone in your pocket has more computational power now - Dallas DamonZ 15:11:49 02/02/16 Correct. - MixManMash 16:14:23 02/02/16 GTR was designed with the latest supercomputer... - vorpalZ 16:21:52 02/02/16 Yes, but the Z32 was on a Cray-2, which reads Cray-Z. Lol. (n/m) - MixManMash 18:34:36 02/02/16 didnt GTM build and cast a lower intake manifold to run the - Dane (Houston) 19:38:53 02/02/16 That's pretty cool. - Dallas DamonZ 23:51:14 02/02/16 We would just need a mad scientist to make those throttle - Polish 00:19:26 02/03/16 Haltech Elite 2500 + OZMO dual TB controller = done. - 96300NAZ 12:32:30 02/03/16 ^While I will be following that path as well - -Grimm- 14:05:51 02/03/16 Go on... How would this work? - Polish 00:07:56 02/04/16 All you would need is a microcontroller and... - -Grimm- 10:18:56 02/04/16 What about some crazy rigging to use stock or modified - Polish 15:38:27 02/04/16 Everything is possible - -Grimm- 17:01:38 02/04/16 ^exactly. Main one being the tuning benefits. But... - 96300NAZ 21:37:55 02/04/16 On the SZ blog there is a turbo 370z with the GTR plenum (n/m) - puchy 07:17:12 02/03/16 quite cool (n/m) - Adam (NoVA) 07:42:06 02/03/16 They did. GTM is no longer in business though... - MixManMash 10:12:40 02/03/16 I'd stay well away from GTM/ Gamma... - vorpalZ 11:33:44 02/03/16 I'd like to see a comparison between the intake piping - not4resaleZ 09:31:34 02/03/16 Someone did a pretty thorough teardown last winter - BlackholeZ 23:04:10 02/03/16 found it: - BlackholeZ 23:09:36 02/03/16
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