Subject	No, surge line is always the lowest possible airflow
Posted by	Chip(GinnMotorsports) on December 26, 2002 at 7:09 PM
	This message has been viewed 48 times.
In Reply To	is this what happens to our stock turbos at 17+ psi? posted by Altersys on December 26, 2002 at 07:05 PM
Message	our stock turbo drop below 60% efficiency at ~17-18 psi with the airflow that our engine requires. What is funny is that the stock turbo are not too bad at 18 psi, as long as you do not rev over 4-4500 rpm. The trush bearing (washer) on the front of the turbo is not designed for these loads and wears quickly.
Follow Ups	PE1820 compressor map (as requested) - Chip(GinnMotorsports) 16:45:03 12/26/02 Wow, bro can you explain some of that....lol. :) (n/m) - ZBlacktt 16:51:45 12/26/02 In a nutshell, 18m^3 choke flow at ~15 psi - Chip(GinnMotorsports) 18:42:42 12/26/02 um....is that good? (n/m) - Zboost 16:56:49 12/26/02 is that 79% ? that's the most efficient ive seen (n/m) - Jefe 17:34:05 12/26/02 Yes, 79% max efficiency. (n/m) - Chip(GinnMotorsports) 18:31:20 12/26/02 ok ppl think of it as a releafe(SP) map, the "high" - Halo Z 17:43:30 12/26/02 relief map (n/m) - stupidfast [ ///M Power ] 21:29:01 12/26/02 hey what happened to the one that was on a paper napkin? - Carlos Ramirez 18:06:38 12/26/02 http://www.gnttype.org/techarea/turbo/turboflow.html (n/m) - Carlos Ramirez 18:07:02 12/26/02 3.5 bar is 50 psi, they will not do that, sorry. - Chip(GinnMotorsports) 18:35:48 12/26/02 Considering you sell the kit, wouldn't it be in your best - SeedyROM 19:03:29 12/26/02 My reply to ZBlackTT was a basic, but good rundown. (n/m) - Chip(GinnMotorsports) 19:11:18 12/26/02 Just saw that, cool - SeedyROM 20:15:20 12/26/02 you have to remember that the compressor map - Carlos Ramirez 19:15:21 12/26/02 That is not bar, it is pressure ratio - Chip(GinnMotorsports) 19:36:24 12/26/02 Its the same thing bro do the simple math :-) - Carlos Ramirez 19:41:49 12/26/02 The point was that 28 is the most that you want to try to - Chip(GinnMotorsports) 19:53:33 12/26/02 That map only goes up to 2 bar (n/m) - U ZCREAM (TTZ in '03) 19:51:36 12/26/02 hey chip... - Altersys 18:41:22 12/26/02 You want to stay away from the surge line - Chip(GinnMotorsports) 18:46:13 12/26/02 is this what happens to our stock turbos at 17+ psi? - Altersys 19:05:55 12/26/02 No, surge line is always the lowest possible airflow - Chip(GinnMotorsports) 19:09:47 12/26/02 Hmmm, you should read it again then - U ZCREAM (TTZ in '03) 19:52:40 12/26/02 A few questions... - BeanZ 21:33:48 12/26/02 $4000 for the bolt-on kit, gaskets lines, etc. - Chip(GinnMotorsports) 22:32:51 12/26/02 And both trims of PE turbos have water-cooled jackets? - U ZCREAM (TTZ in '03) 23:03:07 12/26/02 All are watercooled. Thay are IHI turbos - Chip(GinnMotorsports) 09:14:02 12/27/02 can you post the 1420 map ? (n/m) - Chris(NJ) 09:39:05 12/27/02
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