| I have previously read that there are peformance differences in the GT28R (T3) compressor housing VS. the GT28RS/GT2871 (T04B) etc compressor housings. Just by looking at the compressor specs.. They seem to be the same size.. Could it possibly be the internal machining that is causing the difference in power output? I have heard 20-30rwhp difference. T04B being ahead with the higher performance levels. The Native T04B GT28RS compressor housing has a 3" Hose-Bib style connection which steps down to compressor inducer and a 2" compressor outlets. The GT28R style uses a T3 compressor housing and has a housings very similar to the stock turbo layout. 2-bolt approx 2.5" FLANGE but it steps down to the size of compressor inducer and a ~2" three bolt compressor outlet flange. Both turbos (having had both in native setups) have pretty much the same sharp degree angle which steps down to meet the compressor inducer. Even the JWT 700BB's have the sharp angle steps which must not affect flow (not too much anyways). Do you think that the difference in power that the compressor housings list is because the T04B has the 3" compressor inlet vs. the smaller 2-bolt style housing? I think I remember the housing being the same or very similar in size (GT28R vs. GT28RS). I currently have the GT28RS that HAD the native 3" compressor hose bib style connection. However, I had my compressor housings modified by Mike Smith, He modified so that I can use his aluminum inlet pipes. The inlet pipes were custom modified as well. He modified the inlet pipes so there is no 2-bolt flange. The compressor inlet and inlet pipes use a hose bib style connection. And had the whole setup conical down to meet the size of the compressor inducer. It conicals down with a 7^ or less sweep, so that it will flow with great efficiency. I can imagine the gain in spool-up, especially combined with my compressor inlet piping that has the filters and Dual MAF's located directly under each headlight. I deleted all the stock piping that goes under the headlights to center panel etc etc. Its pretty much a straight lay-out to each turbo after the filter. Would like some input or possible experiences or reasons why the GT28R (t3) compressor housing do not flow as much as the GT28RS (t04B). Thanks!
NO, This picture is not photoshopped. It took many times to take this picture. Setting up the timer, shutter speed etc, then jumping on my bike and getting the tire to spin.
AIM:Shawn300zxTT "-Any closeups on the nuts? - zboost(tx) 19:17:53 08/08/05
-Not really something you want to ask another man about... (n/m) - LordZ 19:24:00 08/08/05" "I just took 45 min and scrubbed the heck out of my rear"
teambushido(San Diego, CA) 19:24:51 12/11/04 -1991 Stage _ TT 5spd (Upgraded to hell and back)
-1990 Super White 2+2 Na Stage 3 Auto (Daily Driver, contemplating selling.. )
-1990 Cherry Red Pearl ,Auto Coupe (Parts car)
-1990 11 Sec Eagle Talon Tsi AWD, (SOLD!)
-1996 Hyundai Sonata (Given to me for FREE , due to broken timing belt,bent valves.. fixed it myself and its my new DD that gets over 25 mpg!
-2004 Honda CBR 600RR (Candy blue, FOR SALE) |
