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BNR twins got a test at 10 psi with LS1

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Old 09-20-02, 03:40 PM
  #26  
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We've learned about M2 and BNR, but what about the Pettit twins? Does anyone have any experience with them?
Old 09-20-02, 03:56 PM
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link & claims?
Old 09-20-02, 10:13 PM
  #28  
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Hey Art Guy. you are underestimating the HTBs!!! lol when you race Barry you are in a lot of trouble b/c he will reel you in like a fish! When both of you launch, spool up isn't a matter. I have to get some sheets posted on my outdated site. An older man in Atlanta that isn't a forum member has a set of HTBs that from word of mouth it made over 430 RWHP at 16 psi (non seq) on a modified 3rd gen! It takes time to get some numbers from everyone. I hope to hear from the guy and get some sheets. These are serious turbos. The compressor wheels have enough potentsy to make 260 RWHP each! Just wanting to worn you before you get big headed on a race and lose all your money! lol

By the way. The turbochargers are watercooled so bearing heat is kept under control. Another thing... When you guys talk boost and lots of it at low RPM, sometimes it doesn't matter. Boost doesn't always make volume. Volume that the turbo puts out makes the power. It doesn't matter if it is 1 psi vs. 5. The 1 psi can still make more power. With 2 smaller turbos, the airspeed/velocity will be faster therefore you get boost. That is great for zippyness, but top end will suffer. It goes the other way for bigger compressor wheels and their designs. Bigger turbos have less down low velocity/airspeed, when they do get into their efficiency ranges you will make a lot of volume. I specifically designed these turbos to fill the needs of people wanting to go single but dont have the money. I would compare these turbos in the ballpark of a 62-1 Garrett Single.

Take care,
Bryan
www.bnrsupercars.com
Old 09-20-02, 11:08 PM
  #29  
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Bryan, can you comment on the restrictiveness of the factory twin exhaust manifold and turbine section? I buy that the compressors can flow 62-1 numbers working together, but many have said that the restriction is in the exhaust side.
Old 09-20-02, 11:20 PM
  #30  
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Brian do you have a phome number I can reach you at? I want to talk turkey about your product.
-Dave
Old 09-20-02, 11:29 PM
  #31  
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the manifold will restrict the turbos to a little over 400 hp.

Ill race barry any day of the week. the turbos are similar size i believe so Id be surprised if he really reeled me in...if he did then your product is definitely worth hyping.

the garrett gt30's are good for 400 hp each supposedly...not that that matters because of the stock manifold restriction.

after my experiences working with these turbos I would bet that the power the bnr set puts out is great...unfortunately that size wheel (especially non seq) on a shaft bearing will be laggy..as barry found out. if you drive on open roads then Im sure you will LOVE them.

Everyone seems happy with your craftsmanship and prices...congrats on that...great products are hard to come by and that is to be commended entirely. well done.

that style turbo is just not for me...neither is non seq...Im all about the power here and now...to me it IS important when I get full boost. nothing like launching on someone with a blip of the throttle...though Im sure with your set it is fun to haul past them after the wait...yum.

what size is the bnr wheels? the m2 set is .59 each...and they flow...so all in all Im happy with how they perform. Im trying out non seq for the hell of it and I will say it again...non seq and a streetport sucks...unless you are at the track or on the open road and then WOO HOO...but I live in traffic...response is what counts in that driving situation.

some lyrics to a bad glam rock song...."I want it all...I want it all...I want it all...and I WANT IT NOW!"

haha...that bout sums it up for me.

congrats again on the great product...the guys seem to be loving them.

j
Old 09-21-02, 12:08 AM
  #32  
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lol, jason and non-sequential in the same sentence - I thought I'd never hear that. Get those M2s back to sequential where they belong! I'm not sure what the actual size of the BNR wheel is but they are a little larger than the M2 wheels from what Dave at KDR said. I thought it was my understanding that ball-bearing turbos can have problems due to heat. I have a feeling that comparing the BNRs next to the M2s will turn out to be the M2s pulling a little more down low and the BNRs pulling a little harder up high - sooner or later we'll find out. But these are both great products that compare nothing to the other worthless companies who upgrade 3rd gen turbos. I've also heard good things about T.E.C. but you have to wait 3-6 months for your rebuild
Old 09-21-02, 03:59 AM
  #33  
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Hey Marshall.

The design of the factory exhaust manifold/turbine housings on the HT12s is a great set up. My opinion is, the restriction isn't in the turbine housings. The restriction is the compressor wheels. They are designed for velocity and zippyness down low, but they will fall off on top. After the compressors go out of their efficiency ranges, the compressed air starts to heat up and become enefficient. The turbine wheels can be clipped. That will allow more exhaust flow through the turbine wheels. The designing flaw on the turbine housings is both are turned against one another. Thats the only thing I don't like about them. But for stock? lol who else can get 390 RWHP out of a stock turbo set up? I think they are enjenious.

Dave...
As for contacting me. My number is 205 790- 2514. Call me after 8pm. If before then, leave a message and I will call you back.

Take care,
Bryan
www.bnrsupercars.com
Old 09-23-02, 11:20 AM
  #34  
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actually the guy that buys an upgraded sequentials are looking to combine single turbo power with low-end.

kinda like the best of both world's...
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