NEW RELEASE!! Precision Turbo Billet 5857 Turbo w/ PTE Cartridge!!!!
Jan 26, 2010 | 11:46 AM
#181
spool up on my hta 3582r(.82 a/r turbine housing) was at 4800rpms, 35psi of boost on a 4th gear dyno pull. On the street it was 100-200rpms sooner. I now hit full boost at 5100rpms or so w/the Buschur fab. IM. I do like these new PTE turbos though!!
Jan 26, 2010 | 04:25 PM
#185
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Joined: Oct 2009
Posts: 12
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From: Australia
Im not an engineer and i dont have much advice as far as theory but i can tell you that your theory is incorrect from the testing we have done..
7 blades make more HP LB for LB up to a certain amount where the 6 blade turbo takes over at higher pressure ratios.. Sometimes its 40+ psi..
The rear turbine wheel dictates the spool not the weight of the front wheel.. You can have a heavy front cast wheel 62mm and turbine wheel 62mm and it will outspool a a light aluminum 62mm with 65mm turbine.. Its a fact..
Each motor design has different uses for the Turbine wheel sizes.. I personally do not like to use turbos like 6265 where turbine is larger than compressor.. that setup showed 0 gains in HP pver 6262 and only laggier.. However other appks such as supra seem to be benefiting by the 65mm rear.. maybe a v8 would as well.. again i am not an engineer and i only know what i test on evos..
what i have seen on the Evos are 6 blade make more power at HIGH BOOST than 7 blade.. the 7 blade make more power up to that high pressure ratio.. thats assuming the turbos are somewhat equal.. not like taking a dinosaur 35r and testing against a 6262.. the 6262 kills that turbo in every way from 5psi up..
7 blades make more HP LB for LB up to a certain amount where the 6 blade turbo takes over at higher pressure ratios.. Sometimes its 40+ psi..
The rear turbine wheel dictates the spool not the weight of the front wheel.. You can have a heavy front cast wheel 62mm and turbine wheel 62mm and it will outspool a a light aluminum 62mm with 65mm turbine.. Its a fact..
Each motor design has different uses for the Turbine wheel sizes.. I personally do not like to use turbos like 6265 where turbine is larger than compressor.. that setup showed 0 gains in HP pver 6262 and only laggier.. However other appks such as supra seem to be benefiting by the 65mm rear.. maybe a v8 would as well.. again i am not an engineer and i only know what i test on evos..
what i have seen on the Evos are 6 blade make more power at HIGH BOOST than 7 blade.. the 7 blade make more power up to that high pressure ratio.. thats assuming the turbos are somewhat equal.. not like taking a dinosaur 35r and testing against a 6262.. the 6262 kills that turbo in every way from 5psi up..
Last edited by YBboost; Jan 26, 2010 at 04:37 PM.
Jan 26, 2010 | 07:08 PM
#186
Newbie
Joined: Jun 2009
Posts: 30
Likes: 0
From: Jacksonville, FL
This is probably a terrible comparison since it is two completely different type of cars among tons of other things but it is the best I can do since I know nothing about the Evo dyno.
Here is the dyno graph that I was sent from Precision showing their 5557 vs their 5857 and he said the 5857 was at 27psi but that is all I was told so I have no clue if the car had cams, race gas, tube manifold, aftermarket intake manifold, etc., but anyway here is the graph on a 2 liter Evo RS at 27psi.
Precision 5557 vs 5857 @ 27psi
Here is a dyno of a VW Jetta GLI 1.8t with the Precision 6057 and the specs of the car are below.
Billet wheel Precision 6057 (Ball Bearing)
- Pagparts vband manifold (log manifold with vband connection), downpipe, and 3.5" inlet pipe
- Tial 38mm Vanded wastegate
- APR Intake manifold
- AWP Head (just port matched to mani) <-- this is a small port head as opposed to the larger port AEB engine code head in the VW/Audi world.
- Ferrerra intake/exhaust valves
- Stock cams
- JE pistons (9.25:1) and Scat rods
- Unitronic 830 File/Injectors, stock fuel lines <--- Unitronic runs 18* of timing on pump gas tunes so I assume it was atleast that much if not a few more since they were running race gas.
VP 109 Unleaded
6057 dyno at 36-37psi on race gas
I will email the guy from Precision back and see if he knows any more details of the Evo dyno and report back.
Here is the dyno graph that I was sent from Precision showing their 5557 vs their 5857 and he said the 5857 was at 27psi but that is all I was told so I have no clue if the car had cams, race gas, tube manifold, aftermarket intake manifold, etc., but anyway here is the graph on a 2 liter Evo RS at 27psi.
Precision 5557 vs 5857 @ 27psi
Here is a dyno of a VW Jetta GLI 1.8t with the Precision 6057 and the specs of the car are below.
Billet wheel Precision 6057 (Ball Bearing)
- Pagparts vband manifold (log manifold with vband connection), downpipe, and 3.5" inlet pipe
- Tial 38mm Vanded wastegate
- APR Intake manifold
- AWP Head (just port matched to mani) <-- this is a small port head as opposed to the larger port AEB engine code head in the VW/Audi world.
- Ferrerra intake/exhaust valves
- Stock cams
- JE pistons (9.25:1) and Scat rods
- Unitronic 830 File/Injectors, stock fuel lines <--- Unitronic runs 18* of timing on pump gas tunes so I assume it was atleast that much if not a few more since they were running race gas.
VP 109 Unleaded
6057 dyno at 36-37psi on race gas
I will email the guy from Precision back and see if he knows any more details of the Evo dyno and report back.
Last edited by A4 TSCHUSS; Jan 26, 2010 at 07:18 PM.
Jan 26, 2010 | 08:39 PM
#187
Thread Starter
Former Sponsor
iTrader: (211)
Joined: Jun 2007
Posts: 9,665
Likes: 1
From: South Florida
This is probably a terrible comparison since it is two completely different type of cars among tons of other things but it is the best I can do since I know nothing about the Evo dyno.
Here is the dyno graph that I was sent from Precision showing their 5557 vs their 5857 and he said the 5857 was at 27psi but that is all I was told so I have no clue if the car had cams, race gas, tube manifold, aftermarket intake manifold, etc., but anyway here is the graph on a 2 liter Evo RS at 27psi.
Precision 5557 vs 5857 @ 27psi
Here is a dyno of a VW Jetta GLI 1.8t with the Precision 6057 and the specs of the car are below.
Billet wheel Precision 6057 (Ball Bearing)
- Pagparts vband manifold (log manifold with vband connection), downpipe, and 3.5" inlet pipe
- Tial 38mm Vanded wastegate
- APR Intake manifold
- AWP Head (just port matched to mani) <-- this is a small port head as opposed to the larger port AEB engine code head in the VW/Audi world.
- Ferrerra intake/exhaust valves
- Stock cams
- JE pistons (9.25:1) and Scat rods
- Unitronic 830 File/Injectors, stock fuel lines <--- Unitronic runs 18* of timing on pump gas tunes so I assume it was atleast that much if not a few more since they were running race gas.
VP 109 Unleaded
6057 dyno at 36-37psi on race gas
I will email the guy from Precision back and see if he knows any more details of the Evo dyno and report back.
Here is the dyno graph that I was sent from Precision showing their 5557 vs their 5857 and he said the 5857 was at 27psi but that is all I was told so I have no clue if the car had cams, race gas, tube manifold, aftermarket intake manifold, etc., but anyway here is the graph on a 2 liter Evo RS at 27psi.
Precision 5557 vs 5857 @ 27psi
Here is a dyno of a VW Jetta GLI 1.8t with the Precision 6057 and the specs of the car are below.
Billet wheel Precision 6057 (Ball Bearing)
- Pagparts vband manifold (log manifold with vband connection), downpipe, and 3.5" inlet pipe
- Tial 38mm Vanded wastegate
- APR Intake manifold
- AWP Head (just port matched to mani) <-- this is a small port head as opposed to the larger port AEB engine code head in the VW/Audi world.
- Ferrerra intake/exhaust valves
- Stock cams
- JE pistons (9.25:1) and Scat rods
- Unitronic 830 File/Injectors, stock fuel lines <--- Unitronic runs 18* of timing on pump gas tunes so I assume it was atleast that much if not a few more since they were running race gas.
VP 109 Unleaded
6057 dyno at 36-37psi on race gas
I will email the guy from Precision back and see if he knows any more details of the Evo dyno and report back.
Pretty much as i have explained without ever testing the turbo.. spool is unchanged but the 58 makes more HP on top.. So why go for the smaller 55 when the spool doesnt change and HP under the curve is identical..
Mike
Jan 27, 2010 | 06:56 AM
#188
Newbie
Joined: Jun 2009
Posts: 30
Likes: 0
From: Jacksonville, FL
I don't think anyone is interested in the 55, it just happens to be on the only graph of a 58 I am aware of. The 58 and 60 on the same graph would be awesome to put to bed the true real world differences of the 5857 and 6057 running street tunes (20-30psi).
Feb 2, 2010 | 11:36 PM
#189
Evolving Member
Joined: Feb 2007
Posts: 491
Likes: 1
From: Redmond Washington
Here is the dyno graph that I was sent from Precision showing their 5557 vs their 5857 and he said the 5857 was at 27psi but that is all I was told so I have no clue if the car had cams, race gas, tube manifold, aftermarket intake manifold, etc., but anyway here is the graph on a 2 liter Evo RS at 27psi.
Precision 5557 vs 5857 @ 27psi
Precision 5557 vs 5857 @ 27psi
Feb 7, 2010 | 05:11 PM
#191
Newbie
Joined: Jan 2009
Posts: 7
Likes: 0
From: Jamaica
Just a guess here...
for those interested...given stock gear ratios and wheel diameter...we'd have:
RPM on the Y-axis, Gears on X-axis, Speed in MPH
1 2 3 4 5
0 0.0 0.0 0.0 0.0 0.0
500 2.9 4.1 5.6 7.3 9.7
1000 5.8 8.2 11.1 14.6 19.5
1500 8.6 12.3 16.7 22.0 29.2
2000 11.5 16.5 22.2 29.3 38.9
2500 14.4 20.6 27.8 36.6 48.6
3000 17.3 24.7 33.4 43.9 58.4
3500 20.2 28.8 38.9 51.3 68.1
4000 23.1 32.9 44.5 58.6 77.8
4500 25.9 37.0 50.0 65.9 87.6
5000 28.8 41.2 55.6 73.2 97.3
5500 31.7 45.3 61.1 80.6 107.0
6000 34.6 49.4 66.7 87.9 116.8
6500 37.5 53.5 72.3 95.2 126.5
7000 40.4 57.6 77.8 102.5 136.2
7500 43.2 61.7 83.4 109.9 145.9
8000 46.1 65.9 88.9 117.2 155.7
8500 49.0 70.0 94.5 124.5 165.4
Feb 7, 2010 | 09:05 PM
#193
great results so far. It seems we can move more air with smaller compressor wheels and retain the spool up!
Is Precision thinking of offering a Ceramic DBB Billet turbo with a compressor wheel smaller than a 58mm? If they did this to the 55mm turbo that was compared against above... I would suspect similar power as before, but with sooner spool up
Is Precision thinking of offering a Ceramic DBB Billet turbo with a compressor wheel smaller than a 58mm? If they did this to the 55mm turbo that was compared against above... I would suspect similar power as before, but with sooner spool up
Feb 7, 2010 | 09:52 PM
#194
Thread Starter
Former Sponsor
iTrader: (211)
Joined: Jun 2007
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From: South Florida
great results so far. It seems we can move more air with smaller compressor wheels and retain the spool up!
Is Precision thinking of offering a Ceramic DBB Billet turbo with a compressor wheel smaller than a 58mm? If they did this to the 55mm turbo that was compared against above... I would suspect similar power as before, but with sooner spool up
Is Precision thinking of offering a Ceramic DBB Billet turbo with a compressor wheel smaller than a 58mm? If they did this to the 55mm turbo that was compared against above... I would suspect similar power as before, but with sooner spool up