Just got BNR turbo back!
06-10-04, 09:43 PM
#26
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Hey Vic, good point on the bypass valve. That can pose a problem if the sping opens prematurely.
Rpeck's car ended up having a problem with the linkage going to the wastegate. The clip had nothing to do with his issues.
As for the clip on the stage 3, I have had all kinds of turbos with different kinds of clips on them on my personal cars. The 15 degree clip worked best with the 60-1 compressor wheel. If it weren't clipped like it is, the turbo would hit a head wind and would loose power at peek boost. On a S5 car I had with the stock intercooler, 2-3 degrees retard on the timing, I got 16 psi by 3900 RPM in 5th gear. The stock turbine wheel actually does quite well compared to a P trim. The P trim turbine wheel will perform better obove 15 psi.
I designed the stage 3 to make peek power from 14-15 psi. That is the sweet spot. An upgraded compressor wheel will not do much more than stock at 7 psi just because the rotating assembly doesn't turn many RPM.
If your turbo is running 8 psi, the rotating assembly turns around 65,000 RPM estimated. The 60-1 loves to turn around 100K-110K. That is when the turbo is running 14-15 psi with the stock clipped turbine wheel. Beyond 15 psi, the turbine wheel restricts what the compressor wheel can really do. To get that turbo to do what you want it to do, you will have to turn up the boost!
Sometimes shipping damage can push the actuator towards the compressor housing and can cause bad response, or cause the WG to hang open therefore minimizing boost. I emailed you telling you how to look for the problem, and if the problem still exists, let me know.
As for the tuning. The tuning can be a huge factor in power output. Since you changed out both your primary and secondary injectors, you can't just all of a sudden make power. It has to be tuned for those injectors and turbo. If not, it won't work to its capacity. Usually when people upgrade their T2 turbos or any turbos at that, they most likely run 12-15 psi.
Sometimes I see issues with electronic boost controllers. Restrictor pills are needed to restrict air volume going to the solenoid valve for the boost controller. The amount of air is just too much to be bleed off to up the boost.
If anyone needs any help, just give me a shout.
Bryan
BNRsupercars@aol.com
Rpeck's car ended up having a problem with the linkage going to the wastegate. The clip had nothing to do with his issues.
As for the clip on the stage 3, I have had all kinds of turbos with different kinds of clips on them on my personal cars. The 15 degree clip worked best with the 60-1 compressor wheel. If it weren't clipped like it is, the turbo would hit a head wind and would loose power at peek boost. On a S5 car I had with the stock intercooler, 2-3 degrees retard on the timing, I got 16 psi by 3900 RPM in 5th gear. The stock turbine wheel actually does quite well compared to a P trim. The P trim turbine wheel will perform better obove 15 psi.
I designed the stage 3 to make peek power from 14-15 psi. That is the sweet spot. An upgraded compressor wheel will not do much more than stock at 7 psi just because the rotating assembly doesn't turn many RPM.
If your turbo is running 8 psi, the rotating assembly turns around 65,000 RPM estimated. The 60-1 loves to turn around 100K-110K. That is when the turbo is running 14-15 psi with the stock clipped turbine wheel. Beyond 15 psi, the turbine wheel restricts what the compressor wheel can really do. To get that turbo to do what you want it to do, you will have to turn up the boost!
Sometimes shipping damage can push the actuator towards the compressor housing and can cause bad response, or cause the WG to hang open therefore minimizing boost. I emailed you telling you how to look for the problem, and if the problem still exists, let me know.
As for the tuning. The tuning can be a huge factor in power output. Since you changed out both your primary and secondary injectors, you can't just all of a sudden make power. It has to be tuned for those injectors and turbo. If not, it won't work to its capacity. Usually when people upgrade their T2 turbos or any turbos at that, they most likely run 12-15 psi.
Sometimes I see issues with electronic boost controllers. Restrictor pills are needed to restrict air volume going to the solenoid valve for the boost controller. The amount of air is just too much to be bleed off to up the boost.
If anyone needs any help, just give me a shout.
Bryan
BNRsupercars@aol.com
Last edited by FEARED7; 06-10-04 at 10:01 PM.
06-10-04, 11:07 PM
#27
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Hey thanks Bryan, I did after messing with the fuel a bit tonight get the turbo to spool up to 11 pounds. I have not leaned out the bottom end yet though its still set for what the factory turbo liked. I did not know the fuel could play such a important role in the lower RPMs. I will also retard the timing tommorow 3-4 degrees hoepfully that will help to. Well thanks again I think I am finally making some headway now.
Jeremy
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06-10-04, 11:43 PM
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Great Jeremy.
Show these people what a 15 degree clipped turbine wheel will do! I need to put a stage 3 on my T2 and get some good dyno sheets to prove some of these people wrong. If you have any questions on tuning, let me know.
Make sure you have a wide band on the car when you make pulls. Don't want you to pop your engine.
Bryan
Show these people what a 15 degree clipped turbine wheel will do! I need to put a stage 3 on my T2 and get some good dyno sheets to prove some of these people wrong. If you have any questions on tuning, let me know.
Make sure you have a wide band on the car when you make pulls. Don't want you to pop your engine.
Bryan
06-14-04, 09:40 PM
#30
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Good news she is spoolin good, I am hittin 15 psi by 4k rpms. She feels pretty strong to, I think there is even more power to be had with it to, I just need to work on the fuel a bit more. Or just break down and dyno tune it LOL 
06-15-04, 01:49 AM
#33
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Originally posted by usmcjsy
Good news she is spoolin good, I am hittin 15 psi by 4k rpms. She feels pretty strong to, I think there is even more power to be had with it to, I just need to work on the fuel a bit more. Or just break down and dyno tune it LOL
Good news she is spoolin good, I am hittin 15 psi by 4k rpms. She feels pretty strong to, I think there is even more power to be had with it to, I just need to work on the fuel a bit more. Or just break down and dyno tune it LOL
06-15-04, 07:10 AM
#34
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Well I retarded the timing, then I just worked with my SAFC. My original SAFC settings for the new injectors were -24% 1-3000rpm then -32% from 4-8000. Now I am at like -27% for 1000 -26% for 2-3000rpm then -17% for 4000 and -15% at 5000 -13% from 6-7000. Then low throttle set at 50% and and high set at 98%. Like I said I think I am still a bit rich in some areas and I may have retarded the timing a bit to much. So I still have some fine tuning to work on.
06-15-04, 08:15 AM
#36
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Interesting, interesting.
What type of fuel mods and such would you really need for the stage 4?? I'm interested in this because I'm thinking about getting the S5 stage 4 for my car. I'm just lookin for some input myself.
What type of fuel mods and such would you really need for the stage 4?? I'm interested in this because I'm thinking about getting the S5 stage 4 for my car. I'm just lookin for some input myself.
06-15-04, 09:37 AM
#40
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ah, I see. I thought that if I was going for that much power and such, I'd go with something bigger than a 720 on the secondaries. I've seen FDs run 1600s, but would that be too big?
06-16-04, 02:33 AM
#44
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i am running 2x680 and 2x1680 with a walbro and stock everything else. planning on boosting 18psi to see what it can do :P
edit. stock tii fuel rails and fpr.
edit. stock tii fuel rails and fpr.
06-20-04, 09:03 PM
#45
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just curious.... is the compressor wine considerably louder? i can hear my stock turbo spooling pretty well but probably not audible from outside the vehicle. how loud are the stage 3 BNR's???
06-20-04, 09:48 PM
#47
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mine is helllllla loud at mid throttle.. about 5 or 6 psi.... but at full throttle it kinda goes away... or maybe the exhaust is just louder and drowns it out.. i dunno.
but a mid throttle pull for a few 1000 rpm will produce sounds to scare off any ricer... thats all i have to do to make a civic leave me alone.
but a mid throttle pull for a few 1000 rpm will produce sounds to scare off any ricer... thats all i have to do to make a civic leave me alone.
06-24-04, 07:50 PM
#48
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UPDATE!!!! My turbo is now a mad man. I could hit 15 psi between 4-5k rpms. However it seemed laggy. I found out the outboard flaps in my TB were barely opening, so I wired them open now I hit full spool easily by 4k. I know just rip through the RPMs. She climbs quick! This turbo is AWSOME!!!!
