[For Sale] New BorgWarner EFR 9174 in stock !
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
humm god damit BW.... looks like i am going all in
ok quick question if i plan to run 20 psi give or take will the 9180 ot 9174 with t4 ewg 1.05ar produce same power? because it seems like the difference is in 30+ psi range?
ok quick question if i plan to run 20 psi give or take will the 9180 ot 9174 with t4 ewg 1.05ar produce same power? because it seems like the difference is in 30+ psi range?
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
I would suspect the power would be very similar between the two at 20psi. I would personally run the 8374 if not going above 20 psi. It will respond faster and produce power levels that are almost identical unless running a monster street port/HBP/Semipport etc.
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Not on a rotary yet. Our first customer to purchase an 9174 iwg cast kit is just about to start his car for the first time this weekend.. I will post when we have some results.
...i planned to go with an IWG 8374 on the following setup
-big street port, Maza 2pc 2mm seals (will get titanium studes + dowel pins eventually)
-2x 1000, 2x2000cc bosch inj, Walbro F90000267 450l pump, -06 lines
-ProJay MTBA 4inj 90mm TB intake
-turblown ss short manifold
-3.5 (or 4 inch) downpipe, 3.5 stillway exhaust system
-adaptronic modular Pnp ECU
-modified eccentric shaft and equal weight rotors, so 9k rpm should be fine
i'm aiming for at least 500rwhp, the more, the better. I was told the seals will be good upt to around 26psi, i'm using 102octane pump fuel here in germany.
I think the 9180 will spool up too late, i want full boost at least at 3k rpm, the earlier, the better. Will the IWG 9174 offer any benefits over the 8374 and will it fit with the intake?
-big street port, Maza 2pc 2mm seals (will get titanium studes + dowel pins eventually)
-2x 1000, 2x2000cc bosch inj, Walbro F90000267 450l pump, -06 lines
-ProJay MTBA 4inj 90mm TB intake
-turblown ss short manifold
-3.5 (or 4 inch) downpipe, 3.5 stillway exhaust system
-adaptronic modular Pnp ECU
-modified eccentric shaft and equal weight rotors, so 9k rpm should be fine
i'm aiming for at least 500rwhp, the more, the better. I was told the seals will be good upt to around 26psi, i'm using 102octane pump fuel here in germany.
I think the 9180 will spool up too late, i want full boost at least at 3k rpm, the earlier, the better. Will the IWG 9174 offer any benefits over the 8374 and will it fit with the intake?
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
If you want 500rwhp and fastest spool possible you will want the 8374 hands down.
13B BP Semi-PP
Joined: May 2014
Posts: 28
Likes: 0
From: Australia
I'm pretty much set on this turbo. (EWG, 1.05)
Currently I have a 13b mild port with a t04z getting 400rwhp. (98 ulp, 18psi)
Just about to build a 13b semi pp and want to use this turbo with e85, pretty keen to get up around the 600+ mark.
Just wondering if there are is any feedback from people that have used this?
Currently I have a 13b mild port with a t04z getting 400rwhp. (98 ulp, 18psi)
Just about to build a 13b semi pp and want to use this turbo with e85, pretty keen to get up around the 600+ mark.
Just wondering if there are is any feedback from people that have used this?
I was referring to toukis question about hitting the 600hp mark. After changing my plans and some research i found that going with a half bridge and some serious boost there is no option to an 9180, so its obvious when you have a semi pp you shouldn't go with a smaller turbo...
13B BP Semi-PP
Joined: May 2014
Posts: 28
Likes: 0
From: Australia
...don't you say?
I was referring to toukis question about hitting the 600hp mark. After changing my plans and some research i found that going with a half bridge and some serious boost there is no option to an 9180, so its obvious when you have a semi pp you shouldn't go with a smaller turbo...
I was referring to toukis question about hitting the 600hp mark. After changing my plans and some research i found that going with a half bridge and some serious boost there is no option to an 9180, so its obvious when you have a semi pp you shouldn't go with a smaller turbo...
I am going semi pp full cut bridge so I will have maximum flow (short of going full pp).
Rotaries require 1.92 CFM (cubic feet per minute) to make one rear wheel hp.
62 pounds per minute times 14.471 equals 897 cubic feet per minute.
Now that we have CFM we divide by 1.92 to get rear wheel rotary hp.
897/1.92 = 467 max rotary rwhp.
TO4Z, GT500, PT67, Borg Warner S300 63, the newer GTX3582r turbos make approx 73 pounds per minute.
73 X 14.471 = 1056 CFM/1.92 = 550 max rotary rwhp
moving to the 80 pound+ turbos…
GT4094r makes 80 pounds, 1157 CFM, 603 rw rotary SAE hp
BW S300 64 FMW makes 80 pounds, 1157 CFM 603 hp
GTX4088r makes around 84 pounds, 1215 CFM, 633 hp
GT4294 puts out 85 pounds, 1230 CFM, 641 hp
62 pounds per minute times 14.471 equals 897 cubic feet per minute.
Now that we have CFM we divide by 1.92 to get rear wheel rotary hp.
897/1.92 = 467 max rotary rwhp.
TO4Z, GT500, PT67, Borg Warner S300 63, the newer GTX3582r turbos make approx 73 pounds per minute.
73 X 14.471 = 1056 CFM/1.92 = 550 max rotary rwhp
moving to the 80 pound+ turbos…
GT4094r makes 80 pounds, 1157 CFM, 603 rw rotary SAE hp
BW S300 64 FMW makes 80 pounds, 1157 CFM 603 hp
GTX4088r makes around 84 pounds, 1215 CFM, 633 hp
GT4294 puts out 85 pounds, 1230 CFM, 641 hp
If you accept these numbers as gospel, the 9174 is rated at 94lb/min, same as the 9180 as it uses the same compressor wheel, so more than capable of making the power I am chasing.
Question is will it run out of puff up top? When does it come on compared to the 9180? Does this outweigh the possible weakness at high rpm?
Last edited by touki; Dec 7, 2016 at 12:07 AM.
13B BP Semi-PP
Joined: May 2014
Posts: 28
Likes: 0
From: Australia
100% I am just trying to determine if I will be going 9174 or 9180. I want to see what the spool difference is between the turbos. I have read that the 9174 can spin harder. Unfortunately there isn't much info out there in terms of dyno graphs specifically on a 13b.
I am going semi pp full cut bridge so I will have maximum flow (short of going full pp).
I pulled this from here.
If you accept these numbers as gospel, the 9174 is rated at 94lb/min, same as the 9180 as it uses the same compressor wheel, so more than capable of making the power I am chasing.
Question is will it run out of puff up top? When does it come on compared to the 9180? Does this outweigh the possible weakness at high rpm?
I am going semi pp full cut bridge so I will have maximum flow (short of going full pp).
I pulled this from here.
If you accept these numbers as gospel, the 9174 is rated at 94lb/min, same as the 9180 as it uses the same compressor wheel, so more than capable of making the power I am chasing.
Question is will it run out of puff up top? When does it come on compared to the 9180? Does this outweigh the possible weakness at high rpm?
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
We have an FD here in house that is almost done with one of the installs... Customers that we have shipped to have not completed their installs unfortunately..
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Still snow on the ground here...
is it true or has it been proven that the 9174 is stronger more reliable and flows more than the 9180 due to the higher rpm capability of the smaller turbine wheel?
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
It is not stronger by design, its just the turbine wheel has less mass, and therefore can take a higher shaft speed. They are not sensitive to over spinning like the 9180.
T4 1.05 EFR 9174 @ 28psi fading to 26 psi. Half bridge, E85, our twin scroll welded manifold, twin comp40 gates etc.