Subject	FWIW: Here is a dyno comparison of the GT28RS with
Posted by	Ash's Z on November 15, 2005 at 12:36 AM
	This message has been viewed 1017 times.
Message	a .86 A/R vs a .64 A/R turbine housing. This is Seb's JWT-tuned .86 A/R Sport700 setup vs. Dee's .64 A/R setup with the IC piping/ICs. The red line is Dee's HP and the blue line is Seb's. The .86 doesn't catch up until right at 5500RPM. There is 175HP difference at 4500RPM, which would equate to around 225ft/lbs of torque difference between the two. It took 2psi more boost to make the same power with the .64 housing, but I believe this was mostly due to the additional engine work that Seb's car has vs. Dees. At 6500RPM though, you can see where the .86 breathes a tad bit better than the .64, but with all that lag on the upswing of things, I can hardly see the advantage of using the .86 housing. [ ashspecz.com ] [ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
Follow Ups	FWIW: Here is a dyno comparison of the GT28RS with - Ash's Z 00:36:32 11/15/05 Interesting! (n/m) - 300zib(NoVA) 00:47:40 11/15/05 2nd - maglito 02:29:02 11/15/05 thanks (n/m) - CollegeBoy 00:49:13 11/15/05 question... - xZeler8 01:16:37 11/15/05 They are the GT28RS fitted with a .64 A/R turbine housing. - Ash's Z 01:22:36 11/15/05 Another question for ya Ash. - 300zib(NoVA) 01:28:08 11/15/05 That's a difficult question to answer as it depends heavily - Ash's Z 01:42:56 11/15/05 Aren't the Z1 525's = GT28R? (n/m) - Shawn300zTT GT28R MD 01:51:07 11/15/05 Not that I am aware of. The 525R is the same as the - Ash's Z 02:00:18 11/15/05 Here: - Russell@Z1 02:19:40 11/15/05 Awesome, Its also good that they are still 4bolt - Shawn300zTT GT28R MD 02:31:26 11/15/05 No problem, I'll do that in the morning. (n/m) - Russell@Z1 02:36:51 11/15/05 The "R" signifies BB? (n/m) - 300zx90 (CO) 09:25:07 11/15/05 thanks :) - xZeler8 01:41:08 11/15/05 JWT or Z1 have ready-install kits. You'll have to request - Ash's Z 01:45:33 11/15/05 good info...thanks again (n/m) - xZeler8 01:58:30 11/15/05 Now go fix your clutch :) (n/m) - Piranha(Omaha) 09:10:25 11/15/05 I agree, its hard to understand why the Sport 700 - Russell@Z1 03:12:40 11/15/05 Russell - are you guys / can you guys sell / design a - Slowninja(The Devil's Z) 04:15:39 11/15/05 We don't currently sell them. Although we have installed - Russell@Z1 19:49:47 11/15/05 a few points - maglito 09:03:01 11/15/05 In response, - Russell@Z1 12:19:50 11/15/05 have to 2nd about the NOS. - CrazyGreek 12:48:18 11/15/05 *Too - CrazyGreek 12:52:00 11/15/05 cool - maglito 12:58:38 11/15/05 FWIW: - Ash's Z 13:24:50 11/15/05 very nice. i'd love to see that car without no2 (n/m) - CollegeBoy 09:48:08 11/15/05 Russell would you please email me that dynojet runfile? - EricTTZ 10:24:26 11/15/05 Done. (n/m) - Russell@Z1 12:21:59 11/15/05 wow... - CarlCuro 09:23:29 11/15/05 I'd like to see the torque curves, too... thanks for posting (n/m) - Scotts94z32 09:56:08 11/15/05 I wonder what the .86 ar would look like - bankruptedz 09:56:43 11/15/05 Very nice! I never knew the .64 A/R was capable of that - 1BADTTZ (SoCal) 10:32:48 11/15/05 A few points.......... - Greg D. (Specialty-Z) 13:35:38 11/15/05 Good points - maglito 13:44:05 11/15/05 2nd. More details always help on the outlook. (n/m) - 1BADTTZ (SoCal) 13:48:41 11/15/05 It was the only data I had to work with at the time. - Ash's Z 14:30:57 11/15/05 Fair Enough....... - Greg D. (Specialty-Z) 15:00:17 11/15/05 I *might* have my set made 2.25 from turbo to IC - maglito 15:14:02 11/15/05 *looks like 2.25->2.5 is going to happen, thanks Ash. (n/m) - maglito 15:46:52 11/15/05 Heres a copy of Seb's dyno that I had... - EricTTZ 16:55:16 11/15/05 Re: Fair Enough....... - bankruptedz 16:56:40 11/15/05 How similar is the HKS GT2530 to the GT28RS (w/ .64)? (n/m) - Z-Jay (Edmonton, AB) 16:29:43 11/15/05 To be brief, almost the same... (n/m) - Scotts94z32 16:36:08 11/15/05
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