BW ET50 Trim Dyno
Seyla, very nice job on this. You have been extremely patient throughout this build-up, much moreso than I could ever be, but it really paid off. And you were even running that lousy Catco cat during these pulls weren't you? That's probably another 30 whp right there at least.
I hope that you find the time and motivation to bring your car out to the road course this season. It looks like your powerband will be perfect for that. And as long as you keep the cat, I can't think of any reason why you couldn't compete in Redline Street Class in the fall.
Congrats
I hope that you find the time and motivation to bring your car out to the road course this season. It looks like your powerband will be perfect for that. And as long as you keep the cat, I can't think of any reason why you couldn't compete in Redline Street Class in the fall.
Congrats
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Seyla, very nice job on this. You have been extremely patient throughout this build-up, much moreso than I could ever be, but it really paid off. And you were even running that lousy Catco cat during these pulls weren't you? That's probably another 30 whp right there at least.
I hope that you find the time and motivation to bring your car out to the road course this season. It looks like your powerband will be perfect for that. And as long as you keep the cat, I can't think of any reason why you couldn't compete in Redline Street Class in the fall.
Congrats
I hope that you find the time and motivation to bring your car out to the road course this season. It looks like your powerband will be perfect for that. And as long as you keep the cat, I can't think of any reason why you couldn't compete in Redline Street Class in the fall.
Congrats
And I was running that backward flowing Catco. But I do keep a test pipe in my garage for special occassions.
I can't wait to get my car up to tip top shape, and retuning with more boost, TP, and short route UICP to 8300 rpms.
Seyla, very nice job on this. You have been extremely patient throughout this build-up, much moreso than I could ever be, but it really paid off. And you were even running that lousy Catco cat during these pulls weren't you? That's probably another 30 whp right there at least.
I hope that you find the time and motivation to bring your car out to the road course this season. It looks like your powerband will be perfect for that. And as long as you keep the cat, I can't think of any reason why you couldn't compete in Redline Street Class in the fall.
Congrats
I hope that you find the time and motivation to bring your car out to the road course this season. It looks like your powerband will be perfect for that. And as long as you keep the cat, I can't think of any reason why you couldn't compete in Redline Street Class in the fall.
Congrats
That exhaust housing looks like it is billet? Is it? Anyway nice piece i have been looking into the BW turbos but i have not found one that i have been pleased with in the sizing im looking for compared to Garrett turbos. But i think this specific one works pretty well good job!
Chris
Chris
What were you looking for? What I like about BW turbos (at least this one) is that they fill in some gaps for the Garrett series. The S256 in terms of general rated flow (58lb IIRC) should split the difference between a 3071/6 and 35R. Granted MadMsheen's extra displacement is helping spool and producing torque, but according to BW the extended tip should spool sooner and provide more solid under the curve gains than other comparable sized turbos. Considering these BW's are journal bearing that sounds good.
These turbos are available with divided housings as well. Lots of available configurations with BW, yet few applications when it comes to Evos...
Looking for something in the 90-100lbs area. From my research the extended tip technology really helps up top but when you get into those size turbos that im looking for compared to the Garrett series turbos suffer in the spool department pretty bad. This season im running a destroke 2.1 88mm stroke 87mm bore to have the high revs im going to need.
Funny after watching a clip on You tube last night i think that the turbo you are using is a Chris Rado series turbo?
Let me know if you have any recommendation as far as what im looking for as far as a turbo.
Chris
Funny after watching a clip on You tube last night i think that the turbo you are using is a Chris Rado series turbo?
Let me know if you have any recommendation as far as what im looking for as far as a turbo.
Chris
Here is a cool comparison with s256 and g30r.
http://www.honda-tech.com/zerothread/2220363
Ill quote it.
http://www.honda-tech.com/zerothread/2220363
Ill quote it.
Originally Posted by mike@synapse motorsport
First we would like to thank Dan(Turbodano here on HT) for allowing us the use of his test unit, without this the comparison never would have happened.
My first thought upon looking at the turbo was that it is definitely larger compared to the GT3076r, and you can see that in the pictures below. The turbine on the s256 is significantly larger than the opposing gt3076r, as is the Exducer on the compressor due to the extended tip technology I gather. The S256's 56mm inducer is 1mm smaller than the 30r’s 57mm inducer. The Borg Warner also comes packaged with a .50 A/R compressor housing vs. the Garrett’s .60 A/R t04e housing, both featured a ported shroud.
Here are some measurements I took of the turbos:
Borg Warner S256:
.50 A/R compressor housing
Compressor Inducer 56.0mm
Compressor Exducer 85.95mm
Turbine 75-76mm (odd number of blades couldn’t put a caliper directly on it just a ballpark figure)
Turbo with .70 A/R 4 bolt housing: 21 lbs
Turbo with .85 A/R 6 bolt housing: 23.2 lbs
Garrett GT3076r
Compressor Inducer 57.0mm
Compressor Exducer 76.14mm
Turbine 59.90mm
Turbo with .63 A/R 4 bolt housing 15.0 lbs
Turbo with Tial .63 A/R v band stainless housing 11.2 lbs
The turbos were tested on my personal motor, here are some of the specs on the motor:
block:
benson sleeved 84mm
earl assembled
9:1 cp pistons
pauter rods
acl bearings
stock crank
head:
applied flow port and polished and built
ferrea 1mm over valves
crower springs/retainers
84mm reshaped combustion chambers to 44cc
5 axis cnc headwork
ITR cams
turbo setup:
garrett gt3076r .82 a/r
garrett core 12x12x3.5 intercooler
2.50" intercooler piping
synapse motorsport front mount manifold
synapse motorsport 3" downpipe
tial 44mm wastegate
tial 50mm bov
stock ignition
other stuff:
victor x IM,
BDL 70mm TB,
competition stage 5 sprung clutch
AEM fuel rail
AEM filter
AEM fpr
walbro 255 stock lines
precision 1000cc injectors
kteller 3" with magnaflow muffler
fluidyne radiator
arp head studs
oem GE 84mm HG
here are a few pictures comparing the size of the two turbochargers.
30r on the left BW on the right.
30r on the left BW on the right.
30r on the left BW on the right.
30r on top BW on the bottom
BW on the left 30r on the right
BW on the left 30r on the right
30r on the left BW on the right.
Here is the BW housing around the 30r turbine wheel you can see the difference in area around the turbine.
few shots of the car on the dyno this morning expect more later.
ryan swapping out the BW for the garrett
Modified by mike@synapse motorsport at 2:47 PM 2/10/2008
My first thought upon looking at the turbo was that it is definitely larger compared to the GT3076r, and you can see that in the pictures below. The turbine on the s256 is significantly larger than the opposing gt3076r, as is the Exducer on the compressor due to the extended tip technology I gather. The S256's 56mm inducer is 1mm smaller than the 30r’s 57mm inducer. The Borg Warner also comes packaged with a .50 A/R compressor housing vs. the Garrett’s .60 A/R t04e housing, both featured a ported shroud.
Here are some measurements I took of the turbos:
Borg Warner S256:
.50 A/R compressor housing
Compressor Inducer 56.0mm
Compressor Exducer 85.95mm
Turbine 75-76mm (odd number of blades couldn’t put a caliper directly on it just a ballpark figure)
Turbo with .70 A/R 4 bolt housing: 21 lbs
Turbo with .85 A/R 6 bolt housing: 23.2 lbs
Garrett GT3076r
Compressor Inducer 57.0mm
Compressor Exducer 76.14mm
Turbine 59.90mm
Turbo with .63 A/R 4 bolt housing 15.0 lbs
Turbo with Tial .63 A/R v band stainless housing 11.2 lbs
The turbos were tested on my personal motor, here are some of the specs on the motor:
block:
benson sleeved 84mm
earl assembled
9:1 cp pistons
pauter rods
acl bearings
stock crank
head:
applied flow port and polished and built
ferrea 1mm over valves
crower springs/retainers
84mm reshaped combustion chambers to 44cc
5 axis cnc headwork
ITR cams
turbo setup:
garrett gt3076r .82 a/r
garrett core 12x12x3.5 intercooler
2.50" intercooler piping
synapse motorsport front mount manifold
synapse motorsport 3" downpipe
tial 44mm wastegate
tial 50mm bov
stock ignition
other stuff:
victor x IM,
BDL 70mm TB,
competition stage 5 sprung clutch
AEM fuel rail
AEM filter
AEM fpr
walbro 255 stock lines
precision 1000cc injectors
kteller 3" with magnaflow muffler
fluidyne radiator
arp head studs
oem GE 84mm HG
here are a few pictures comparing the size of the two turbochargers.
30r on the left BW on the right.
30r on the left BW on the right.
30r on the left BW on the right.
30r on top BW on the bottom
BW on the left 30r on the right
BW on the left 30r on the right
30r on the left BW on the right.
Here is the BW housing around the 30r turbine wheel you can see the difference in area around the turbine.
few shots of the car on the dyno this morning expect more later.
ryan swapping out the BW for the garrett
Modified by mike@synapse motorsport at 2:47 PM 2/10/2008
Originally Posted by mike@synapse motorsport
Results are in:
Tests were all done today back to back, there were no changes in the tune whatsoever as both turbos were making the same power at the same boost levels. we used c16 fuel for these dyno runs.
the BW used a .70 a/r turbine housing.
the Garrett used a .82 a/r turbine housing.
dyno comparison at 20psi GT30r is the solid line BW 256 is dotted
green line is boost, blue line is torque
Comparison at 22-23psi GT30r is solid BW is dotted
green line is boost, blue line is torque
both turbos at 24psi dropping off to 23-22psi boost is holding out better on the gt30r but the bw is making a little more power
green line is boost, blue line is torque
in conclusion overall the gt30r consistantly spooled 300-400rpms sooner at each boost level. the borg warner made similar power and at the higher boost levels made slightly more power. either turbo would be a great choice for someone looking to make 450-500+whp. stayed tuned for video footage of the dyno, were still figuring out the software on this new camera windows vista ftl.
Tests were all done today back to back, there were no changes in the tune whatsoever as both turbos were making the same power at the same boost levels. we used c16 fuel for these dyno runs.
the BW used a .70 a/r turbine housing.
the Garrett used a .82 a/r turbine housing.
dyno comparison at 20psi GT30r is the solid line BW 256 is dotted
green line is boost, blue line is torque
Comparison at 22-23psi GT30r is solid BW is dotted
green line is boost, blue line is torque
both turbos at 24psi dropping off to 23-22psi boost is holding out better on the gt30r but the bw is making a little more power
green line is boost, blue line is torque
in conclusion overall the gt30r consistantly spooled 300-400rpms sooner at each boost level. the borg warner made similar power and at the higher boost levels made slightly more power. either turbo would be a great choice for someone looking to make 450-500+whp. stayed tuned for video footage of the dyno, were still figuring out the software on this new camera windows vista ftl.
Last edited by Done; Feb 15, 2008 at 11:33 AM. Reason: With results
