Borg Warner Turbos

[Halon]

that's 67mm exducer. They name their turbos different than PTE. PTE uses comp inducer and turbine exducer (i.e. 6265)

BW uses comp exducer and turbine inducer (i.e. 83-74)

So the 67mm turbo you are looking at, would be more commonly referred to as a 53mm turbo (that's the inducer).

The 83-74 (a 62mm turbo) they rated at 79lb/min!!!

And the real 67mm turbo (91-80) they've rated at 94lb/min.

[turbotalon1g]

^Thanks for clearing that up, I would expect that 53mm turbo then to do 55+lb/min.

[Halon]

cool vid on the new efr stuff. amazing how much r&d goes into these before ever even being bolted onto a vehicle, and the testing they do also.

wfuE6xiij9g


Some info from Geoff @ Full Race that I thought was useful.

If you go bigger on the compressor that is the same thing as going smaller on the turbine. I put up a bunch of posts explaining the U/C ratio of Compressor OD / Turbine Wheel OD in that big road racing turbo thread... basically divide the compressor OD by the turbine OD - an optimal match will be in the neighborhood of 1.09-1.18 whereas a mismatch turbo will be 1.18+... Also keep in mind that a small a/r will have low turbine efficiency at low flow rates, and higher turbine efficiency at higher flow rates. Conversely the large a/r will have high turbine efficiency at low flow rates and lower at high flow rates...

6blade compressor wheel -- ideal match ratio of ~1.14-1.24
7blade compressor wheel -- ideal match ratio of ~1.09-1.18

[turbotalon1g]

Found some results for the S362:
http://forums.evolutionm.net/evo-dyno-tuning-results/594517-bep-s362-dyno-results.html

Car info (EVO):
Motor-

2.0 LR 9.1.0 CR
Howard Ultimate Duty I-beams 156mm Rods
Wiseco HD 9.1.0 Pistons .20 over
ACL Bearing
Sparktech non-CDI Ignition
GSC S2 Cams
GSC Behive Springs
GSC Ti Retainers
GSC Valve Seats
Supertech Valves black nitrate coated
Supertech Valve Guides
Torque Solutions Motor Mount Kit
APR Front Motor Mount
BEP S362 T3 Turbo .70 A/R w/CompR Billet wheels
Turbo Trix Manifold
Custom DP
Custom Test Pipe
BR SD 3" Catback


Fuel System-
Fuel Lab FPR kit
FIC 1450cc
AEM Meth Injection "Direct Port" w/Failsafe
Cooling Mist CM5 Knozzels x4
BR Double Pumper

Trans-
Bushwacker Trans "Evo IX 5 speed Trans w/Evo VIII 4th"
Exedy Twin HD
MAP Clutch Fork Stop
STM 1 piece clutch Line
B&M Short Shifter
Blox Knob
Redlinegoods Shift Boot "Custom made for MR Console"

Suspension-
Standard Suspension R3 Coilovers
Whiteline Roll center correction kit

Boost was off on the 35.25 run I maxed the 50psi Absolute sensor which maxes at 35 when we did another pull it was 38.X psi and the sensor is off by 1psi reading higher so we got it to 41 psi.

The 608 and 553 are 3rd gear pulls and the 616 is a 4th gear pull.

[Halon]

Figured I'd share some results I found from someone running my same 61mm turbo (BW S300sx 84-75) on a Supra with a .88AR T4 open exhaust housing and 264/264 cams. Thought they were some pretty good numbers for a 61mm.


560hp\540tq @ 18psi
http://i110.photobucket.com/albums/n93/dholsen/SupraDyno2001.jpg

630hp\590tq @ 23psi
http://i110.photobucket.com/albums/n93/dholsen/SupraDyno3001.jpg

700hp\675tq @ 27psi
http://i110.photobucket.com/albums/n93/dholsen/SupraDyno1001.jpg

[turbotalon1g]

Those seem like great numbers, I wonder how much is due to displacement.

Vassil made 725whp (DD) at 32 psi on a 2.0L

[evotuner]

yeah that torque takes off and the hp takes over, very nice

[2Point3TSi]

The EFR turbos are fantastic. I got to see some of the first cars at Full-Race that had these turbo's and I was super impressed. Here is a video of a friend from AZ that has one on his fully built RSX. Also not sure if you can see the links to the forum.
http://www.youtube.com/watch?v=9OS0RazIaVs
http://www.kutsujuracing.com/forum/showthread.php?t=50682&page=27

[turbotalon1g]

Any more info on these? Trying to learn about t4 TS stuff.

[Murlo26]

I need to jump into this thread...

My plan for spring is to go back to an internally gated setup, 90% sure I will be rocking the 7670 .92a/r BW EFR. I have spoken to a lot of people and it looks like its what I am looking for in terms of down low power and powerband, should have peak torque around 4k rpms.

Most who have tried this one on Evos say its a stock turbo on steroids feel, can't wait to try it out.

I have been very skeptical of BW turbos for a while, ever since they released the EFR's but almost every turbo in the top 5 for world time attack runs an EFR now. I have tried everything else, mind as well try this right?

Here is an Evo X comparison (2.2L motor) of the 7670 EFR vs the 9180 EFR

http://i950.photobucket.com/albums/ad349/TurboQuad4/Dyno%20Sheets/C_Hoover_Moore_Evo_X_GSR_22L_EFRComparison_zpsf8ee db19.jpg