BNR turbos?
10-25-07, 03:59 PM
#26
"your turbo source"
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Hello all.
Here are the differences between the 93-95 twins and the 99's. Same shaft, same compressor wheel, minute differences in the tubine housing casting with the 99's (added nickel content). The turbines in the 99's are clipped around 5 degrees (which there is absolutely no gain by clipping stock turbine). Thrust bearings, bearing housings and compressor housings are very similar. All the parts are interchangeable with the S6 turbos. The abradable housing is great for spool up and mild boost levels, after that they tend to have a problem coming apart and destroying the turbos.
The BNR's have the current state of the art Garrett turbine wheels, compressor wheels and thrust bearing assemblies. Now that I have my own garrett bearing housing especially for the FD RX7, you have no worries about oil and water lines not bolting up. There is also another feature that is untold about this new bearing housing. There is a oil deflector on the rear journal bearing that pushes the oil toward the center of the bearing housing where the oil drain is located. This prevents oil from exiting the exhaust side of the turbocharger which causes smoking. Right now the record RWHP on the stage 3's is 425 RWHP. There are many cars on the 420 RWHP mark. If you do happen to blow your engine, parts aren't far away. We can service them for way less than buying new units.
Bryan@BNR
Here are the differences between the 93-95 twins and the 99's. Same shaft, same compressor wheel, minute differences in the tubine housing casting with the 99's (added nickel content). The turbines in the 99's are clipped around 5 degrees (which there is absolutely no gain by clipping stock turbine). Thrust bearings, bearing housings and compressor housings are very similar. All the parts are interchangeable with the S6 turbos. The abradable housing is great for spool up and mild boost levels, after that they tend to have a problem coming apart and destroying the turbos.
The BNR's have the current state of the art Garrett turbine wheels, compressor wheels and thrust bearing assemblies. Now that I have my own garrett bearing housing especially for the FD RX7, you have no worries about oil and water lines not bolting up. There is also another feature that is untold about this new bearing housing. There is a oil deflector on the rear journal bearing that pushes the oil toward the center of the bearing housing where the oil drain is located. This prevents oil from exiting the exhaust side of the turbocharger which causes smoking. Right now the record RWHP on the stage 3's is 425 RWHP. There are many cars on the 420 RWHP mark. If you do happen to blow your engine, parts aren't far away. We can service them for way less than buying new units.
Bryan@BNR
02-13-08, 07:27 PM
#29
Spaceman Spiff,
Yesterday I sent my turbo cores to BNR to be replaced with a new set of their Stage 3 Turbos. I went through allot of info on this site to help me make my decision to go with them and not the 99 spec turbos. I love the performance of the sequential setup and made the decision that I was going to stay with it. So for me, a single turbo is not an option. I've had cars with single turbos before but I prefer these twins. So with that, the choices become limited. Either 99 Spec's or BNR's. I chose the BNR's because of their potetial in the future. I can install these in my basically stock setup and down the road take full advantage of them. The 99 Specs don't have the potential of the BNR's. Oh, and one more thing...BNR's are about $200 less than the 99's.
Yesterday I sent my turbo cores to BNR to be replaced with a new set of their Stage 3 Turbos. I went through allot of info on this site to help me make my decision to go with them and not the 99 spec turbos. I love the performance of the sequential setup and made the decision that I was going to stay with it. So for me, a single turbo is not an option. I've had cars with single turbos before but I prefer these twins. So with that, the choices become limited. Either 99 Spec's or BNR's. I chose the BNR's because of their potetial in the future. I can install these in my basically stock setup and down the road take full advantage of them. The 99 Specs don't have the potential of the BNR's. Oh, and one more thing...BNR's are about $200 less than the 99's.
02-13-08, 07:33 PM
#30
The nonspatial continuum
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I ordered mine a week ago, so hopefully the stage 3 seq should be here soon! Looking very forward to it. Ive only heard people rave about the stage 3's, so that was a big help in the decision. And for a product to have virtually no bad reviews says alot!
02-20-08, 12:10 PM
#31
"your turbo source"
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I started having the bearing housings made in February of 07'. They are very nice and I love not having to do days and days worth of machine work in making the T28's fit all the stock oil and water lines.
Thanks for your business guys, I really appreciate it.
Bryan@BNR
02-20-08, 01:29 PM
#32
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Bryan, I assume the record with them were from Rich's car. He was running non seq if i read correctly.. Given that what is the normal spool up time running them nonseq with the full bolt ons and open exhaust?
also what about records for running them sequential... I d love to have a 400rwhp setup running the sequential twins.
is that possible do you think??
also what about records for running them sequential... I d love to have a 400rwhp setup running the sequential twins.
is that possible do you think??
02-21-08, 03:40 PM
#33
roti
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Bryan, I assume the record with them were from Rich's car. He was running non seq if i read correctly.. Given that what is the normal spool up time running them nonseq with the full bolt ons and open exhaust?
also what about records for running them sequential... I d love to have a 400rwhp setup running the sequential twins.
is that possible do you think??
also what about records for running them sequential... I d love to have a 400rwhp setup running the sequential twins.
is that possible do you think??
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/twin-turbo-upgrade-709708/
I asked the same question a while back, and it seems BNR's are the only way to keep sequential, and get 400rwhp. Though the post above breaks down a bit, you may want to call BNR and see if they have more dyno pulls yet.
02-21-08, 04:40 PM
#35
I don't think an ignition system is required... Bryan, whats your "required" list for stage 3's? I think you mentioned secondaries @ 1200, but even a stock ecu is ok if the boost isn't over stock. Though the stock ecu can't manage the 1200's. I think it just really depends on how much boost you will run. I'm getting stage 3's as we speak, but I'm not expecting to get a new ignition system?!
02-21-08, 06:15 PM
#36
Eats, Sleeps, Dreams Rotary
the 99s arent an upgrade in anyway....complete waste of money when u can buy a used set of stockers for diiiiiiiiiirt cheap.
02-21-08, 06:18 PM
#37
Eats, Sleeps, Dreams Rotary
very wrong again. there are a ton of single options outthere. if u want 500 rwhp then yes u may get some lag. but if u want 400rwhp u can do a small ball bearing and get nice quick spool.
02-21-08, 06:21 PM
#38
Eats, Sleeps, Dreams Rotary
Unless you live in a place where modifications can/will get you in trouble with the law and registration people, BNR's are basically a waste of time. The reason is you can easily go single turbo and have a simpler setup rather than trying to crank the boost up on the BNR's. I'm not saying Bryan's product is crap, because its not. It just doesn't make a lot of sense unless you have the issue I listed above.
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i would add,,,if u want to run them parrallel why not just go single. unless of course u are hiding from the smog *****
Last edited by matty; 02-21-08 at 06:28 PM.
02-21-08, 06:24 PM
#39
Eats, Sleeps, Dreams Rotary
I would say the efini turbos are more efficient than the 93-95 stock ones and more reliable at higher than stock boost levels. Efini turbos can reliably run 12 psi with the proper fuel/boost mapping and I know people that run them at 14 psi without apparent problem.
I believe the 99 rx7 had a different, 16 bit ecu that complimented the upgraded hardware.
I believe the 99 rx7 had a different, 16 bit ecu that complimented the upgraded hardware.
02-21-08, 07:49 PM
#41
I have asked several people on this site about installing BNR's and the consensus is that, yes, you can run them without other mods and with the stock ECU as long as you keep the stock boost pressure. Once you start increasing the PSI then the other systems will need to be upgraded.
02-21-08, 08:19 PM
#43
02-21-08, 08:56 PM
#44
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ahh... thanks for pointing that out.. yeah thats not too much different than stock twins while in sequential..
granted im sure they will do more power but still... if it were able to do over 400rwhp while keeping sequential and reliable.. u could count me in for sure!!
granted im sure they will do more power but still... if it were able to do over 400rwhp while keeping sequential and reliable.. u could count me in for sure!!
02-22-08, 12:32 AM
#48
Well let us know. Currently the sequential setup is limited to ONLY those damn stock solenoids, and most will argue the stock exhaust manifold. I feel if you can get those axiom solenoids running perfectly with boost transition being smooth as butta, then we may have stumbled upon the key to running the BEST sequential setup EVA!
02-22-08, 05:09 AM
#49
F'n Newbie...
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Well let us know. Currently the sequential setup is limited to ONLY those damn stock solenoids, and most will argue the stock exhaust manifold. I feel if you can get those axiom solenoids running perfectly with boost transition being smooth as butta, then we may have stumbled upon the key to running the BEST sequential setup EVA!
I have never heard of these Solenoids... How difficult would it be to get them in and running effectively (and how quickly can they be shipped)?? I've already spent 6k to make everything work it's best. I see no problem with dropping a little bit more if it is reasonable.
And I *will* be posting dyno numbers after the install and tune (as well as comparison sheets of before/after from the same dyno).
02-22-08, 06:03 AM
#50
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you can get mac brand solenoids, these are the exact ones used by apex-I, haltech and several other good quality boost controllers for 20 dollars each. Check the haltech section where I posted a link to the retailer with the part number.
There are multiple wattages available, for digital solenoids as in TC (both) CRV, CCV use the lower wattage because switching speed doesn't matter.
Saying that the peak WHP generated by a car that is running Sequential is limited in any way by the solenoids is pure BS.
The reason a NS car makes more power is due to the lack of a turbo control gate in the exhaust stream.
There are multiple wattages available, for digital solenoids as in TC (both) CRV, CCV use the lower wattage because switching speed doesn't matter.
Saying that the peak WHP generated by a car that is running Sequential is limited in any way by the solenoids is pure BS.
The reason a NS car makes more power is due to the lack of a turbo control gate in the exhaust stream.