What turbo are you running?, and why?
03-02-19, 11:33 PM
#1
What turbo are you running?, and why?
I have a stock S5 turbo with ported waste. I'm almost positive it has started leaking oil and needs a rebuild. So I'm looking at my options for a replacement instead of rebuild. I have a stock block, but feel I have done enough extra bolt ons, including fuel pump and bigger secondaries to support a slightly better turbo. So just seeing what people are running these days. Would prefer faster/sooner spool over peak HP, also wouldn't mind keeping with an internal waste gate, but do have sources to mod to run external....
So what do ya got???
So what do ya got???
03-03-19, 09:48 AM
#2
The answer to your question really depends on how much time & money do you want to invest in all the necessary engine management (ECU/wiring & sensors) and related fuel system modifications to make the most of this new TBD turbo on your existing 13BT. Answer that question honestly, and you'll get more relevant advice....
As an example, my prior setup was a stock ported 13BT reman short block, and at that time I wanted to keep the investment in required supporting mods to a minimum, but I didn't want to create a time bomb either. So I picked up a BNR stage 2 hybrid turbo to replace my worn out stock S5 turbo. For engine management, I got an Rtek v2.x which is basically a chipset mod to the stock N370 ECU that allows for some fuel/spark tuning via a Palm PDA interface. Also upgraded all 4x stock FI's to Bosch 720cc FI's, dropped in a mid-90's OEM Toyota Supra turbo fuel pump. Exhaust was the 2.5" RB down pipe & 2.5" pre-silencer that replaced the main cat, which couples up with the existing Borla dual cat-back setup I had. I had to fabricate a turbo inlet duct out of some AL mandrel bent pipe & silicone couplers to hook up the stock S5 AFM to the turbo inlet, and retain the stock blow off valve. No other mods were done, and I retained the stock S5 boost control solenoid. Got it dyno tuned, and this setup netted me about 300RWHP on 93 octane pump gas. Here's a link with my dyno #'s on that setup:
https://www.rx7club.com/rtek-forum-1.../#post11712759
As for the BNR hybrid, for all practical purposes, it's a new turbo - new CHRA, both wheels, compressor housing, ported/improved waste gate, etc. But they do need your old one because the turbine housing is reused/rebuilt in the process. More info is here: bnrsupercars.com
As an example, my prior setup was a stock ported 13BT reman short block, and at that time I wanted to keep the investment in required supporting mods to a minimum, but I didn't want to create a time bomb either. So I picked up a BNR stage 2 hybrid turbo to replace my worn out stock S5 turbo. For engine management, I got an Rtek v2.x which is basically a chipset mod to the stock N370 ECU that allows for some fuel/spark tuning via a Palm PDA interface. Also upgraded all 4x stock FI's to Bosch 720cc FI's, dropped in a mid-90's OEM Toyota Supra turbo fuel pump. Exhaust was the 2.5" RB down pipe & 2.5" pre-silencer that replaced the main cat, which couples up with the existing Borla dual cat-back setup I had. I had to fabricate a turbo inlet duct out of some AL mandrel bent pipe & silicone couplers to hook up the stock S5 AFM to the turbo inlet, and retain the stock blow off valve. No other mods were done, and I retained the stock S5 boost control solenoid. Got it dyno tuned, and this setup netted me about 300RWHP on 93 octane pump gas. Here's a link with my dyno #'s on that setup:
https://www.rx7club.com/rtek-forum-1.../#post11712759
As for the BNR hybrid, for all practical purposes, it's a new turbo - new CHRA, both wheels, compressor housing, ported/improved waste gate, etc. But they do need your old one because the turbine housing is reused/rebuilt in the process. More info is here: bnrsupercars.com
03-03-19, 10:46 AM
#3
The answer to your question really depends on how much time & money do you want to invest in all the necessary engine management (ECU/wiring & sensors) and related fuel system modifications to make the most of this new TBD turbo on your existing 13BT. Answer that question honestly, and you'll get more relevant advice....
As an example, my prior setup was a stock ported 13BT reman short block, and at that time I wanted to keep the investment in required supporting mods to a minimum, but I didn't want to create a time bomb either. So I picked up a BNR stage 2 hybrid turbo to replace my worn out stock S5 turbo. For engine management, I got an Rtek v2.x which is basically a chipset mod to the stock N370 ECU that allows for some fuel/spark tuning via a Palm PDA interface. Also upgraded all 4x stock FI's to Bosch 720cc FI's, dropped in a mid-90's OEM Toyota Supra turbo fuel pump. Exhaust was the 2.5" RB down pipe & 2.5" pre-silencer that replaced the main cat, which couples up with the existing Borla dual cat-back setup I had. I had to fabricate a turbo inlet duct out of some AL mandrel bent pipe & silicone couplers to hook up the stock S5 AFM to the turbo inlet, and retain the stock blow off valve. No other mods were done, and I retained the stock S5 boost control solenoid. Got it dyno tuned, and this setup netted me about 300RWHP on 93 octane pump gas. Here's a link with my dyno #'s on that setup:
https://www.rx7club.com/rtek-forum-1.../#post11712759
As for the BNR hybrid, for all practical purposes, it's a new turbo - new CHRA, both wheels, compressor housing, ported/improved waste gate, etc. But they do need your old one because the turbine housing is reused/rebuilt in the process. More info is here: bnrsupercars.com
As an example, my prior setup was a stock ported 13BT reman short block, and at that time I wanted to keep the investment in required supporting mods to a minimum, but I didn't want to create a time bomb either. So I picked up a BNR stage 2 hybrid turbo to replace my worn out stock S5 turbo. For engine management, I got an Rtek v2.x which is basically a chipset mod to the stock N370 ECU that allows for some fuel/spark tuning via a Palm PDA interface. Also upgraded all 4x stock FI's to Bosch 720cc FI's, dropped in a mid-90's OEM Toyota Supra turbo fuel pump. Exhaust was the 2.5" RB down pipe & 2.5" pre-silencer that replaced the main cat, which couples up with the existing Borla dual cat-back setup I had. I had to fabricate a turbo inlet duct out of some AL mandrel bent pipe & silicone couplers to hook up the stock S5 AFM to the turbo inlet, and retain the stock blow off valve. No other mods were done, and I retained the stock S5 boost control solenoid. Got it dyno tuned, and this setup netted me about 300RWHP on 93 octane pump gas. Here's a link with my dyno #'s on that setup:
https://www.rx7club.com/rtek-forum-1.../#post11712759
As for the BNR hybrid, for all practical purposes, it's a new turbo - new CHRA, both wheels, compressor housing, ported/improved waste gate, etc. But they do need your old one because the turbine housing is reused/rebuilt in the process. More info is here: bnrsupercars.com
As far as the bnr stage 2, I have always kinda liked there hybrid setup, simple, not over the top, mounts up with minimal mods, nets decent results. but they are hard to find these days.
03-05-19, 10:20 PM
#4
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although my TII has been sitting for some time.. with kids and life its happens lol.
I have the stock ported W.G on an S5 trubo, stock hot side and 60trim garrett cold side.
yes my TII is street ported but i have the Fd fuel pump (I think been way to long) and stock injectors. I have megasquirted the car.
that being said i control the boost to 15psig and w.g has a hold spring to stop dumping the boost. with a front mount I/C from ebay for the FC. i get ambient air temps and loads of fun. boost is amazing no boost lag or creep.
2.5" crock sport D.P to muffler tip. im not sure if the mega squirt is the reason Y i can still run the stock injectors or not but i know im at 80-85% of the stock injectors at WOT.
id go Hybrid as above. safe and fun.
as for the oil leaks from the turbo. make sure all your crank case vents are free and clear! this will case all sorts of oil blow by problems been there on my first build in my TII FB setup.
I have the stock ported W.G on an S5 trubo, stock hot side and 60trim garrett cold side.
yes my TII is street ported but i have the Fd fuel pump (I think been way to long) and stock injectors. I have megasquirted the car.
that being said i control the boost to 15psig and w.g has a hold spring to stop dumping the boost. with a front mount I/C from ebay for the FC. i get ambient air temps and loads of fun. boost is amazing no boost lag or creep.
2.5" crock sport D.P to muffler tip. im not sure if the mega squirt is the reason Y i can still run the stock injectors or not but i know im at 80-85% of the stock injectors at WOT.
id go Hybrid as above. safe and fun.
as for the oil leaks from the turbo. make sure all your crank case vents are free and clear! this will case all sorts of oil blow by problems been there on my first build in my TII FB setup.
03-06-19, 10:18 AM
#5
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i'm running an S4 turbo with a V trim compressor in a bored out stock housing. response and spool are about the same, power over 4000rpm went up. like you'd expect. i feel its a good combo, the compressor and turbine wheels end up about the same size.
the next step would be the fancy T3 exhaust wheel, and maybe an H trim compressor. the T3 wheel has fewer fins, so its slightly less restrictive. H is bigger than a V, so power should go up, but response should get worse
basically what happens is that the stock turbo is already spinning really fast (110k rpm), and if you raise the boost, you're asking it to spin faster, and at some point it can't, and reliability goes down.
if you put a larger compressor in, it moves the same air at a slower shaft speed, so you can have more power and reliability stays like stock.
response is more to do with the weight of the wheels, bigger = heavier = slower to respond
the next step would be the fancy T3 exhaust wheel, and maybe an H trim compressor. the T3 wheel has fewer fins, so its slightly less restrictive. H is bigger than a V, so power should go up, but response should get worse
basically what happens is that the stock turbo is already spinning really fast (110k rpm), and if you raise the boost, you're asking it to spin faster, and at some point it can't, and reliability goes down.
if you put a larger compressor in, it moves the same air at a slower shaft speed, so you can have more power and reliability stays like stock.
response is more to do with the weight of the wheels, bigger = heavier = slower to respond
03-07-19, 09:34 PM
#6
Started with a stock TII swap. Got a Haltech E6X, walbro 255, and 1680 cc injectors. Worked well, but had to rebuild motor because I popped an apex seal by pushing the stock turbo too far.
Got a half bridge port. and a BNR stage 4. Worked well, but turbo was too small for the motor.
Moved up to a Masterpower T70, had new downpipe fabbed up and installed a megasquirt. Managed to destroy the turbo being really stupid (long story).
Replaced it with a BW s366. Fully upgraded fuel system with -6 lines and ID1700x injectors all around. Ran like a scalded cat. Running 18 PSI, trapped 122 in the 1/4 with a bad launch and a rough tune by me. A few months later, it caught on fire due to unknown circumstances. Tears were shed.
Just letting you know what can happen if you don't have a plan. Pick a goal and stick with it. If you think you will want more, plan for it up front. Couple recommendations. On the cheap end, get a stage 2 or so BNR. You can make that work with stock-ish exhaust, a drop-in fuel pump, new secondaries, and a basic tunable ECU. Will be fast, but not crazy. If you have the money, rebuild with a street port (optional), and get a proper single turbo. You can still get 350-400 HP out of a relatively stock fuel system if you have a good ecu with a good tune. As a big plus, you can get that power with a turbo that still has good response. It will be faster than most people know what to do with. I estimate mine was around 450 and it scared every single person who rode in it, myself included. I don't think many people realize just how fast a car link that is
Fast forward a few months, and I've got a new FC that was already mostly built by RP in Garland. Has a pinned, streetported, motor and a GT35. Still needs some work on the intercooler setup and a new fuel pump, but after that it should be good for 400+.
If I were to do it from scratch, I would be running one of the new EFR series turbos. Everything I have seen on them is just amazing. Good response, with high peak numbers.
Got a half bridge port. and a BNR stage 4. Worked well, but turbo was too small for the motor.
Moved up to a Masterpower T70, had new downpipe fabbed up and installed a megasquirt. Managed to destroy the turbo being really stupid (long story).
Replaced it with a BW s366. Fully upgraded fuel system with -6 lines and ID1700x injectors all around. Ran like a scalded cat. Running 18 PSI, trapped 122 in the 1/4 with a bad launch and a rough tune by me. A few months later, it caught on fire due to unknown circumstances. Tears were shed.
Just letting you know what can happen if you don't have a plan. Pick a goal and stick with it. If you think you will want more, plan for it up front. Couple recommendations. On the cheap end, get a stage 2 or so BNR. You can make that work with stock-ish exhaust, a drop-in fuel pump, new secondaries, and a basic tunable ECU. Will be fast, but not crazy. If you have the money, rebuild with a street port (optional), and get a proper single turbo. You can still get 350-400 HP out of a relatively stock fuel system if you have a good ecu with a good tune. As a big plus, you can get that power with a turbo that still has good response. It will be faster than most people know what to do with. I estimate mine was around 450 and it scared every single person who rode in it, myself included. I don't think many people realize just how fast a car link that is
Fast forward a few months, and I've got a new FC that was already mostly built by RP in Garland. Has a pinned, streetported, motor and a GT35. Still needs some work on the intercooler setup and a new fuel pump, but after that it should be good for 400+.
If I were to do it from scratch, I would be running one of the new EFR series turbos. Everything I have seen on them is just amazing. Good response, with high peak numbers.
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03-13-19, 05:27 PM
#8
if you want inane response, get the 7670EFR with the short cast turblown manifold. power is limited to around 400 hp at high boost, but the transient response is crazy.
this is a video one of the forum members had posted before turbo2lt or something like that?
this is a video one of the forum members had posted before turbo2lt or something like that?
Last edited by KompressorLOgic; 03-13-19 at 05:29 PM.
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