Subject	No, it's definitely surge...
Posted by	Machtavian on July 02, 2012 at 10:07 AM
	This message has been viewed 193 times.
In Reply To	Re: Drag strip results. posted by rh_334 on July 02, 2012 at 08:39 AM
Message	When you shift it manually at 8500 rpm it doesn't to it any more. The car is an automatic so you're never lifting the throttle. When the ecu is shifting the car at 7000rpm the next gear comes all the way down to 4000rpm and the engine can’t move all the air that is in the manifold at that low of an rpm. When you shift the car manually at 8500 the next gear only drops to 5500rpm and the engine seems to be able to move the air at that higher rpm because it’s not surging. Ideally we would like to shift it at 9500 rpm but Steve is a little nervous pushing it that hard even though that’s what the engine and heads are rated at. That way the next gear would be in front of the peak torque and the engine would not have to fight to move the air. Also, we need a bigger cam(280) and more port work done; that will greatly help in moving the air at lower RPM.
Follow Ups	Drag strip results. - Machtavian 22:43:01 06/30/12 Does he listen to his radio during the run? (n/m) - zgene4 22:53:13 06/30/12 I don't think so, his external fuel pump is very loud. (n/m) - Machtavian 22:54:25 06/30/12 LOL, I see why you asked that, his antenna is up. (n/m) - Machtavian 00:02:19 07/01/12 What was his best run? (n/m) - toykoz32 00:45:31 07/01/12 10.2 @139 low boost on the brakes - Machtavian 00:48:42 07/01/12 that is intense, surge or no surge. wow. (n/m) - evan_aggie(ATX) 01:20:44 07/01/12 Nice test runs :) How long before the setup changes occur? - samsung-Z [Houston] 09:15:54 07/01/12 Any engine pics available? Congrats on the runs!! (n/m) - TTZ2NV(EPTmotorsports) 09:41:52 07/01/12 Yeah - Machtavian 11:39:27 07/01/12 40% duty cycle~ 26 psi (n/m) - Machtavian 11:17:18 07/01/12 Wow! How does an anti surge housing work? (n/m) - Boosted1 09:29:40 07/01/12 At low RPM's, a smaller engine cannot use all the air that - JMW300ZX 10:03:09 07/01/12 Sounds like same function as Recirc valve. (n/m) - Boosted1 11:35:45 07/01/12 Yes, but in many cases the recirc valve cannot move all that - MixManMash 11:53:03 07/01/12 You just need bigger BOV's.... - Machtavian 12:25:45 07/01/12 I actually had BOVs and it was worse. I went back to stock - MixManMash 13:16:28 07/01/12 That doesn't make any sense, you may have had to - Machtavian 14:16:16 07/01/12 HKS SSQVs have no adjustment. The ports on them are smaller - MixManMash 18:29:34 07/01/12 You need 50mm Tial BOV's (n/m) - Machtavian 18:45:27 07/01/12 do the TIALs have a recirc option? - blackomega 15:45:27 07/03/12 You can get their Recirc BOV here: - MixManMash 17:51:55 07/04/12 You need to get your car together so you guys - The Hawk 13:17:09 07/01/12 Or - samsung-Z [Houston] 10:05:56 07/01/12 Re: Drag strip results. - rh_334 08:39:04 07/02/12 No, it's definitely surge... - Machtavian 10:07:55 07/02/12 27.3" tires made it worse - rated300zx 11:28:29 07/02/12 Apparently you don't know anything about who tuned the car. (n/m) - The Hawk 10:58:27 07/02/12 LOL, 2nd (n/m) - BigTDogg (MA) 11:42:02 07/02/12 Apparently you don't know how to read a dyno graph. (n/m) - Z_Pilot 11:47:40 07/02/12 Re: Apparently you don't know how to read a dyno graph. - Z_Pilot 12:05:21 07/02/12 His statement was: - The Hawk 15:23:30 07/02/12 I heard there is another post that Z1 needs your help. - HighPsi (NorCal) 15:43:17 07/02/12 Thank You! Some of these people amaze me w/ their BS! (n/m) - The Hawk 18:47:12 07/02/12 I can read the chart you posted of your car...... - Greg D. (Specialty-Z) 15:44:10 07/02/12 Very nice and informative explanation. - The Hawk 18:55:04 07/02/12 If in fact this is true, - Z_Pilot 20:27:23 07/02/12
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