Subject	At low RPM's, a smaller engine cannot use all the air that
Posted by	JMW300ZX on July 01, 2012 at 10:03 AM
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In Reply To	Wow! How does an anti surge housing work? (n/m) posted by Boosted1 on July 01, 2012 at 09:29 AM
Message	the larger turbo is pushing. So the anti surge housing allows compressed air being pushed out of the turbo to recirculate back into the inlet to prevent compressor surge. So the turbo is spinning fast enough at high RPM, that when the car shifts gears, it's at a low enough RPM that the air that the turbo was pushing has to find a place to go so you get compressor surge and the turbo wheel slows down rapidly instead of continuing to free spin. In other words, the engine can only use so much air and this turbo is large enough to cause surging on a 1.6L engine. (IIRC is is a stroked 3.2L which is why I said 1.6 and not 1.5)
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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