Turbo Comparison... includes NEW 2023 GARRETT GBC & BW SX-R turbos/post one
#76
Lacks Ample Funds
iTrader: (1)
Correct me if I'm wrong, but steel and ceramic bearings shouldn't be the reason for the response.
I would expect the weight of the rotating assembly to be the limiting factor. Obviously, ball bearing turbos
do spool faster than journal bearing, but I'm unaware if ceramic makes that much of a difference.
I would expect the weight of the rotating assembly to be the limiting factor. Obviously, ball bearing turbos
do spool faster than journal bearing, but I'm unaware if ceramic makes that much of a difference.
#77
Full Member
Correct me if I'm wrong, but steel and ceramic bearings shouldn't be the reason for the response.
I would expect the weight of the rotating assembly to be the limiting factor. Obviously, ball bearing turbos
do spool faster than journal bearing, but I'm unaware if ceramic makes that much of a difference.
I would expect the weight of the rotating assembly to be the limiting factor. Obviously, ball bearing turbos
do spool faster than journal bearing, but I'm unaware if ceramic makes that much of a difference.
#79
Full Member
I think this whole exercise by Garrett is an admission of failure .
We can't do what BW have done with turbine wheels so lets just repackage what we already have. Use a slightly better compressor design but combine that with the expected output numbers to match what Precision do so it looks like we got heaps more power. Throw in a reverse rotation turbo for special effect and the punters will never notice that we really didn't achieve anything.
We can't do what BW have done with turbine wheels so lets just repackage what we already have. Use a slightly better compressor design but combine that with the expected output numbers to match what Precision do so it looks like we got heaps more power. Throw in a reverse rotation turbo for special effect and the punters will never notice that we really didn't achieve anything.
#80
Lacks Ample Funds
iTrader: (1)
I think this whole exercise by Garrett is an admission of failure .
We can't do what BW have done with turbine wheels so lets just repackage what we already have. Use a slightly better compressor design but combine that with the expected output numbers to match what Precision do so it looks like we got heaps more power. Throw in a reverse rotation turbo for special effect and the punters will never notice that we really didn't achieve anything.
We can't do what BW have done with turbine wheels so lets just repackage what we already have. Use a slightly better compressor design but combine that with the expected output numbers to match what Precision do so it looks like we got heaps more power. Throw in a reverse rotation turbo for special effect and the punters will never notice that we really didn't achieve anything.
The problem with reverse turbos is that everything is unique to those turbos, so good luck finding aftermarket turbine housings.
#81
Full Member
I see they have changed the turbine maps for the GTX3584RS now . However the new maps make even less sense than the old ones did .The AR's and wheel trims aren't even the same as the listed options. Looks like someone at Garrett is determined to f it up !
Last edited by Brettus; 11-18-16 at 03:04 AM.
#82
Lacks Ample Funds
iTrader: (1)
The GTX3584RS has a larger compressor wheel and the turbine map says its a 76 trim wheel, but the specs listed show a 84 trim wheel that is identical is size to the old GT35R.
I really am confused on what Garrett has been up to. They improve the compressor, but seem to ignore the turbine
I really am confused on what Garrett has been up to. They improve the compressor, but seem to ignore the turbine
#83
Garage Hero
iTrader: (93)
The GTX3584RS has a larger compressor wheel and the turbine map says its a 76 trim wheel, but the specs listed show a 84 trim wheel that is identical is size to the old GT35R.
I really am confused on what Garrett has been up to. They improve the compressor, but seem to ignore the turbine
I really am confused on what Garrett has been up to. They improve the compressor, but seem to ignore the turbine
#84
Full Member
The GTX3584RS has a larger compressor wheel and the turbine map says its a 76 trim wheel, but the specs listed show a 84 trim wheel that is identical is size to the old GT35R.
I really am confused on what Garrett has been up to. They improve the compressor, but seem to ignore the turbine
I really am confused on what Garrett has been up to. They improve the compressor, but seem to ignore the turbine
#85
Banned. I got OWNED!!!
That turbo isn't divided, so it's not worth a crap anyways...
#86
Full Member
#88
Full Member
Depends on what it actually flows-hopefully Garrett will get their **** together and get the correct map up soon . It could be that it flows similar or even more with the 1.21 hsg .
#89
Full Member
Garrett have finally got the correct turbine maps up for the new RS turbine :
Here is the comparison with the old turbine of the same size . Comparing old 1.01 with new RS series1.01
it looks like a gain in flow in the order of 3.5%...................
Here is the comparison with the old turbine of the same size . Comparing old 1.01 with new RS series1.01
it looks like a gain in flow in the order of 3.5%...................
#91
Full Member
Just noticed the the max efficiency of the new rs wheel is 78% .. vs 70 for the old .
According to my mickey mouse comparison on matchbot , this would put the GTX3584RS 68mm wheel with a 1.21 AR housing at about the same backpressure as a normal 74mm wheel in a 1.45 housing ..........
Could be merit in this new design as the spoolup has to be better than a normal 74mm wheel .
Last edited by Brettus; 12-01-16 at 04:08 AM.
#93
Full Member
Spoolup is relative to wheel size as well as AR . A 68mm in a 1.21 is going to spool up better than a 74mm in a 1.21 . Which I think is what Garrett is trying to achieve with the RS wheel. Less flow ,but the same backpressure and better spool than a larger wheel in the same sized housing.
Last edited by Brettus; 12-01-16 at 01:53 PM.
#94
Spoolup is relative to wheel size as well as AR . A 68mm in a 1.21 is going to spool up better than a 74mm in a 1.21 . Which I think is what Garrett is trying to achieve with the RS wheel. Less flow ,but the same backpressure and better spool than a larger wheel in the same sized housing.
When you refer to the 74mm turbine, there has been talk about T04Zs and also the EFR range (and Matchbot)... are you talking about the T04Z 74mm turbine?
The distinct concern I have with these things is as you have alluded to, the exhaust back pressure will likely be higher with the GTX3584RS hotside than the T04Z with all other things being equal... and the choke flow on the 67/84mm Gen2 compressor drops as you travel over 2.5PR which means its not a high boost friendly compressor, which lends itself to potentially quite high pressure differential across the motor if you try to hit the GTX3584RS's claimed peak flow. Part of me wonders if it's even possible when attached to an actual engine.
#95
Full Member
Sorry, a bit late to this party - was just pointed this way, hope it's not too late to join.
When you refer to the 74mm turbine, there has been talk about T04Zs and also the EFR range (and Matchbot)... are you talking about the T04Z 74mm turbine?
The distinct concern I have with these things is as you have alluded to, the exhaust back pressure will likely be higher with the GTX3584RS hotside than the T04Z with all other things being equal... and the choke flow on the 67/84mm Gen2 compressor drops as you travel over 2.5PR which means its not a high boost friendly compressor, which lends itself to potentially quite high pressure differential across the motor if you try to hit the GTX3584RS's claimed peak flow. Part of me wonders if it's even possible when attached to an actual engine.
When you refer to the 74mm turbine, there has been talk about T04Zs and also the EFR range (and Matchbot)... are you talking about the T04Z 74mm turbine?
The distinct concern I have with these things is as you have alluded to, the exhaust back pressure will likely be higher with the GTX3584RS hotside than the T04Z with all other things being equal... and the choke flow on the 67/84mm Gen2 compressor drops as you travel over 2.5PR which means its not a high boost friendly compressor, which lends itself to potentially quite high pressure differential across the motor if you try to hit the GTX3584RS's claimed peak flow. Part of me wonders if it's even possible when attached to an actual engine.
#96
Full Member
Is now ..........
Garrett T3 Twinscroll Turbine Housing in Ni-Resist For GT35R/GTX35R 1.01 A/R : atpturbo.com
Garrett T3 Twinscroll Turbine Housing in Ni-Resist For GT35R/GTX35R 1.01 A/R : atpturbo.com
Last edited by Brettus; 03-14-17 at 04:15 AM.