Borg Warner s200sxe (s257)
Sep 30, 2017, 09:28 AM
#63
Evolving Member
All this experience and no pics, graphs, or proof of any kind. Where are these manifolds? Dyno graphs? Do you work for Extreme Tuners?
Borg Warner made these housings with smaller T3 volutes for a reason. If you want to gain several hundred RPM in spool use a small tube header combined with the properly sized exhaust housing. If you want to bandaid fix use a T4 header with a smaller a/r.
So heat is 70% of why a turbo spools eh? Wrong! Heat creates expansion which in turn causes gases To move at higher velocities. Air movement through the turbine is the only reason a turbo works period.
You must know more than ford engineers because they are squeezing a 3.5l engine exhaust through two holes that are 1.15" diameter and getting 400hp out of that. Zero spool time.
Header tube size matters no matter how you twist it around in your favor. Small tube header vs. big tube header same a/r, the small tube will always outspool the big tube period. So your wrong there too.
Borg Warner made these housings with smaller T3 volutes for a reason. If you want to gain several hundred RPM in spool use a small tube header combined with the properly sized exhaust housing. If you want to bandaid fix use a T4 header with a smaller a/r.
So heat is 70% of why a turbo spools eh? Wrong! Heat creates expansion which in turn causes gases To move at higher velocities. Air movement through the turbine is the only reason a turbo works period.
You must know more than ford engineers because they are squeezing a 3.5l engine exhaust through two holes that are 1.15" diameter and getting 400hp out of that. Zero spool time.
Header tube size matters no matter how you twist it around in your favor. Small tube header vs. big tube header same a/r, the small tube will always outspool the big tube period. So your wrong there too.
400bhp out of a 3.5liter is not impressive. They simply use small turbos to make the engine seem larger and be more efficient. Is it really that hard to wrap your brain around? We're not talking about OEM philosophies here, we're talking about performance applications, where less compromise is present or necessary.
I will say this one more time. You can build a small runner divided T4 manifold. I already agreed with you on runner size...
T4 Divided is the way to go. Period. Another fact that supports me here is that the EFR line is all T4 divided, including the small B1 frames.
The S259 is a 59mm billet inducer from Bullseye, if I'm not mistaken.
I would imagine the new tech of the SXE should match or best that in the same housing, hence why I'd run the 1.22 A/R T4 flanged housing and have the T3 inlet gasket matched like shown above.
What size pipe and design manifold, i.e., bottom or top mount, was on the VR4?
RWD4G63, may I PM you to discuss your experience with these turbos and DSM's?
I would imagine the new tech of the SXE should match or best that in the same housing, hence why I'd run the 1.22 A/R T4 flanged housing and have the T3 inlet gasket matched like shown above.
What size pipe and design manifold, i.e., bottom or top mount, was on the VR4?
RWD4G63, may I PM you to discuss your experience with these turbos and DSM's?
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Strm Trpr (Sep 30, 2017)
Oct 1, 2017, 02:16 AM
#65
Evolved Member
any off the shelf T4 will be a large runner manifold BTW. That's what I'm trying to say the smaller runner T3 manifold with net you quicker spool.
Last edited by 2winscroll; Oct 4, 2017 at 06:10 PM.
Jan 2, 2018, 08:11 AM
#68
EvoM Guru
iTrader: (1)
I was considering, but the inducer is too big for some of the class I would like to run for Time attack stuff I would like to do in the future.
Jan 6, 2018, 06:29 AM
#69
Evolving Member
Nice edit.
Jan 9, 2018, 02:49 PM
#71
EvoM Guru
iTrader: (1)
Jan 11, 2018, 05:31 PM
#73
Evolving Member
Any head work?
Upgraded springs are a must with the HL276's, which did you go with?
What are your goals and other planned mods?
How long until we get some results out of your build?
Jan 11, 2018, 11:19 PM
#74
Kiggly high pressure springs. Been running them in the head for 5 years now. Heads been every since the car was stock block.
Actually went this route to make the car more streetable (previous turbo was a gen 2 6466) looking for around 450 to 500 on this setup. Big power cars are fun but you loose all the daily drivability with them and I enjoy driving my car. So I decided to try this turbo out and build an auto dsm for big power.
Car has been downgraded quite a bit from its previous setup. I'm reusing my forward facing stm t3 manifold and using a non cdi ignition and fic 1250cc injectors this time around and keeping my 450 double pumper w/8an feed and 6an return fuel lines and its tune on AEM V1. Car has an exedy triple w/ a buschur built ultimate ratio trans w/ 4.11 final drive in it.
I do expect mine to spool a little later than most setups cause I have a jm fab drag intake manifold on it. I know back when I was on a 3076r it made the turbo spool a little slower but the turbo seemed to breathe a lot better up top.
I ordered pretty much everything I need to get it running last night so its more of a waiting game. From there it really depends on the weather for tuning since my car is street tuned.
The following users liked this post:
Strm Trpr (Jan 12, 2018)
Jan 12, 2018, 09:11 AM
#75
Evolving Member
Kiggly high pressure springs. Been running them in the head for 5 years now. Heads been every since the car was stock block.
Actually went this route to make the car more streetable (previous turbo was a gen 2 6466) looking for around 450 to 500 on this setup. Big power cars are fun but you loose all the daily drivability with them and I enjoy driving my car. So I decided to try this turbo out and build an auto dsm for big power.
Car has been downgraded quite a bit from its previous setup. I'm reusing my forward facing stm t3 manifold and using a non cdi ignition and fic 1250cc injectors this time around and keeping my 450 double pumper w/8an feed and 6an return fuel lines and its tune on AEM V1. Car has an exedy triple w/ a buschur built ultimate ratio trans w/ 4.11 final drive in it.
I do expect mine to spool a little later than most setups cause I have a jm fab drag intake manifold on it. I know back when I was on a 3076r it made the turbo spool a little slower but the turbo seemed to breathe a lot better up top.
I ordered pretty much everything I need to get it running last night so its more of a waiting game. From there it really depends on the weather for tuning since my car is street tuned.
Actually went this route to make the car more streetable (previous turbo was a gen 2 6466) looking for around 450 to 500 on this setup. Big power cars are fun but you loose all the daily drivability with them and I enjoy driving my car. So I decided to try this turbo out and build an auto dsm for big power.
Car has been downgraded quite a bit from its previous setup. I'm reusing my forward facing stm t3 manifold and using a non cdi ignition and fic 1250cc injectors this time around and keeping my 450 double pumper w/8an feed and 6an return fuel lines and its tune on AEM V1. Car has an exedy triple w/ a buschur built ultimate ratio trans w/ 4.11 final drive in it.
I do expect mine to spool a little later than most setups cause I have a jm fab drag intake manifold on it. I know back when I was on a 3076r it made the turbo spool a little slower but the turbo seemed to breathe a lot better up top.
I ordered pretty much everything I need to get it running last night so its more of a waiting game. From there it really depends on the weather for tuning since my car is street tuned.
Please keep us posted!
I have a 99 GSX I'm building for road racing track days and street sweeping...
I have a virgin 99 4G63 and a virgin 99 4G64 I can build.
I can't decide which to build, a LR2.4L or a 94mm destroker....
Last edited by Strm Trpr; Oct 22, 2019 at 09:18 PM.
