azndisgrace

two questions.

will i be able to run the turbos sequential in the future?

when will i be able to buy a pair??

R Xplicit

you can buy them now, and ues you CAN run them sequential, but why??

Tim Benton

iTrader: (1)

Stephen,

Congrat's on the 400 rwhp on the stock manifold. With 400 to 405 corrected HP, I wonder what kind of mph in the 1/4 that will result in. I'd venture to say the dynopack operator was a little off since you made in the 380 on it compared to the 405 rwhp with the dynojet.
I want a ride if we can ever meet up. Try to make it over when the hitman comes to Atlanta, he'll be using the datalogit and you can atleast pick up more info like I'm sure you did when Steve was tuning yours.

BTW, where can one find out what model dynojet means? Like that one is a dynojet 224c where the dynolabs is a 248, which probably denotes features one can do and one can't but just curious.

Tim

pluto

You can find the info at www.dynojet.com/ 224 is the smaller version of the dynometer that is rated up to 500rwhp, 500rwtq and 160mph. I think that the rollers are smaller which yeilds less inertia for force induction cars to get good reading. 248C is what most of the tuner uses since the roller itself weights around 3000lbs (simulated car weight) to create similar load that is needed for street acceleration. Also, 248C is rated up to 1200hp, 1000tq and 220mph. It's a better unit for tuning and dyno measurements.

pluto

I don't think its a good idea to run them in sequential since the amount of flow will introduce boost spike during turbo transition. It's really your call on what you prefer but either way will probably work fine.

FEARED7

Hey Guys! Good job Stepehen! well I have made some improvements to my next 3 sets that will improve some flow and reduce some backpressure! There is more potential in these turbos. We can play with the tuning a bit more. The numbers were on pump fuel and not much timing was used to get those numbers. We can put some 116 in it and bump the timing up a bit . ahh we'll leave that for Rich! Stephens car is exactly what he wanted it to be.... I am just as happy for him that I am that the turbos are a success! lol

Take care,
Bryan
www.bnrsupercars.com
(205) 663 4797

Juancm5483

Damn, I wanna get my hands on a set!!

pluto

Look what I found!!!! Make sure you don't get brian @ BNR mad or your set of turbos will get hit by that pipe before getting the BNR rebuild.

Nice pic Brian.....

rotorbrain

aww, steve the pic didnt show. . . find one of his broken ratchets!!!! haha.

bryan, what IS the method to your madness?!?!?!?!?

haha!!!

paul

ptrhahn

iTrader: (9)

Couldn't you do some tuning with the PFC (or other) to modify when/how the flapper opens to help control the spike? Wouldn't the spike be much less pronounced with a HiFlo cat as well?

Also, just for my notes... are these turbos NOT ball-bearing? Could ball-bearings be done as well (stage 5?!)

Thanks all: great work!

SPOautos

Yes, I'm running this much boost daily on the street and have been since mid/late December. How does it feel.....well I'll let you know when ever my tires stop spinning lol. Really though, its awseome, if I plant my foot or even go to 1/2 throttle in 1st or 2nd I get absolutly no traction. My tires spin up to redline in a instant at 4500rpms. However, just driving around at 1/3 throttle and less is actually quite fast and provides pleanty of power and boost for the street in 1st and 2nd. 3rd gear in a different story, I can plant my foot all day long in 3rd and up and its fun haha

I have had the tires spin some here and there in 3rd from a 65 kick but its not to bad. The main thing is this, if you've got over 400rwhp you need drag radials if your going to be racing from anything less than a 3rd gear roll. I instantly break my tires loose from a kick in 1st or 2nd.

Also, remembe on the street my air temp are much lower than on the dyno and that makes more hp.

As far as tuning into, my a/f were mostly in the mid 11's, my timing and split is conservative and its on ALL PUMP GAS. I only want to tune my car for what I run EVERYDAY to work lol

STEPHEN

SPOautos

Oh yea, and if you guys think they are making good low end power now wait till I actually tune my car under 4000rpms lol

STEPHEN

SPOautos

Correct, they are NOT ball-bearing.....but there is really no need for ball bearing. They make great low end power and ball bearing would jack the price up a ton. Brian will keep working on these sets, I think the batch he just made that will be on Rich's car will make more power with the wheel clip...just how much we'll have to wait and find out!!!!

STEPHEN

SPOautos

Yea thats just it, its all madness!!!!

You guys have to know Brian to understand, he's like a mad scientist with a lathe, mill and welder in a room full of turbos and rotary engines. He's always thinking of this off the wall stuff to try out and dreaming up these Frankenstien turbos lol It's like this.....hmmmm, I can take a little of this turbo and this off this other turbo, then mill it out and use the compressor wheel from this turbo, then port this here and weld this here and WOLA!!!! Muuhaha

Well, all I can say is these babies ROCK!!!!! Good job man!!!!

STEPHEN

BATMAN

I will way that there are 2 things I like about Ball Bearing turbos:

1. The quick spool up and low end power

2. The whining sound - kinda like a supercharger. Couple that with the unique rotory sound and my hks SS BOV and u have a UFO........

FEARED7

well guys. I do have some more plans to follow through with. I have got the turbos just right . Knock on wood!!! I may have some grooved bearings made for lesser friction on the rotating assemblies. Also the groove allows minute trash (if any) or dirt to go through without causing premature bearing failure. I do however study turbos everyday and I can read each one like a book . I guess it is a talent, but well see how these things go! I am very confident about the stage 3's and They will improve more and more as we go. I would like to thank everyone for the good reputation on the forum. I would like to continue the mad science thing!

In my opinion Ball Bearing turbochargers are not sufficient to run on the street w/o a prefilter before the turbocharger oil feed supply. If you don't have a prefilter, your turbo(s) will be subject to contaminations in the oil. When contaminants hit the ball bearing side of the cartridge, they will gaul up the ***** and the housing that goes around bearings. I have seen it time and time and time again. When they gaul up, garrett,IHI, and whoever will not warranty the failure. Just thought I would say some stuff to inform how brittle the bb turbos are when the are subjects to contamination.

Bryan
www.bnrsupercars.com
205 663 4797

RTS3GEN

Could Brian figure out a way to separate the exhaust housings at the common outlet to the down pipe? This would theoretically separate the exhaust pusles and hence reduce back pressure being produced when the turbines reach higher rpm? I have contemplated this on many occasions, the stock turbos become fairly ineffecient not only because of the comressor size, but also due to the countereffect each turbine has on the other as exhaust energy rises. Can inconel be welded to cast iron inside the common outlet, or a piece welded to the down pipe so that it is inserted into the manifold outlet as the down pipe is installed? Anyone curious!? Seems like a relatively simple procedure, just need to figure out the right metal that can tolerate a blast furnace on either side of it.

Art

SPOautos

Actually I can hear these turbo at WOT over my exhaust. They have this nice whistle sound to them.

The sound is great!

STEPHEN

RTS3GEN

Brian?
Any thoughts on my idea???? Dumb, impossible, feasible or waste of time?
Just a thought
art

SPOautos

Well, thats something I've been giving some though to lately.....havent really come up with anything great though. The idea of welding a flange to the dp is interesting but I dont know if it would install good. its already tight getting a dp mounted much less having the flange sticking out of it. Plus that would require Brian to start making dp's or people mailing in thiers which is a pita. If something can be done it would probably be better to weld it to the manifold.

One of the problems is there is such a small amount of room the divider would have to be really thin and be able to hold up to 1500F heat with no problems over a long period of time!!!! Maybe inconel would work but how hard it that to weld???

STEPHEN

smerkinseven

i love it!!!! 400+rwhp on twins.... can't wait to pick up a set..... DAMN.. I'M IN LOVE!!!

RTS3GEN

Yeah, the space is limited, I would suspect perhaps welding the piece to the down pipe and installing the downpipe by rotating from below and then into position. Again, I don't have any welding tools to try a prototype, but It definitely makes you wonder, this seems like a simple (sic) way to extract a few more ponies and relieve some strain on the bearings and center sections of the turbo's.
Art

capt. bill1

Bryan,
Interesting that you mention a prefilter for the ball bearing turbos. I am having Rob at Pineapple build me up a new engine and that is just what he recommended. I found a 1 micro bypass filter that I will be using to feed oil to the turbos.

http://www.oilguard.com/app_guide.php

I am also considering, down the road, switching to your stage threes due to the fact that there seems to be much better support for them. Do you have a price on them yet? And will you have base maps for a PFC for your turbos based on the type of modifications to the engine and the intake/exhaust systems?

GoRacer

iTrader: (2)

Quick spool was mentioned for the Ball Bearing turbos but isn't running "cooler" another major benefit?

An inconel manifold can be made, but is anyone willing to pay the price for it? How about just a better, more eficient heat coated SS manifold?

If BNR wants to cook up some secret inconel manifold sauce, they can have it done at www.burnsstainless.com. M2 claims a theoretical 400hp/per turbo on their twins. So hypothetically with an eficiant inconel manifold that gets rid of the restrictions and handles the heat then isn't 800hp possible? ...how's that for a mad scientist project? I double dog dare ya'!

SPOautos

HeHe, well we wernt talking about a totally new manifold (which I might do for myself) cause the reason most people go with upgraded twins is to sneak past the emissions....which these will definatly do. A new manifold would jack the price up way to high.

We were just talking about moding the stock manifold to flow a little better.

STEPHEN