Upgraded Twins Dyno Results........
Rotary Enthusiast
Joined: Oct 2002
Posts: 1,045
Likes: 1
From: Plano, TX
Ok - complete noob here on turbo engineering. Few statements/idears...
--- I understand the idea of seperate exhaust manifolds. Would it be feasible to manufacture "turbo headers" that exit the turbo straight to the midpipe/highflow cat? Make each pipe from the turbo 2" or so... It would seem that having 2 2" pipes would give more leeway in "angle management".
-- Next - Once upon a time I read about ceramic ball bearing turbos. Did anything ever happen with these?
Edit: Did a search on ceramic bearings http://www.geocities.com/rad87gn/tech/bbturbos.html
--- I understand the idea of seperate exhaust manifolds. Would it be feasible to manufacture "turbo headers" that exit the turbo straight to the midpipe/highflow cat? Make each pipe from the turbo 2" or so... It would seem that having 2 2" pipes would give more leeway in "angle management".
-- Next - Once upon a time I read about ceramic ball bearing turbos. Did anything ever happen with these?
Edit: Did a search on ceramic bearings http://www.geocities.com/rad87gn/tech/bbturbos.html
Last edited by Brentis; Jan 16, 2003 at 09:57 PM.
Joined: Oct 2001
Posts: 4,772
Likes: 2
From: My 350Z Roadster kicks my RX7's butt
Well I think you need to MacGyver some secret manifold sauce and it will kick *** like no one will ever beleive!
Check this out:
Attain-KSP drag RX-7
Twin HKS-GT3037S
Approx 750hp
Click "here" for drag video clip
Check this out:
Attain-KSP drag RX-7
Twin HKS-GT3037S
Approx 750hp
Click "here" for drag video clip
Last edited by GoRacer; Jan 16, 2003 at 10:31 PM.
Senior Member
Joined: Nov 2002
Posts: 347
Likes: 1
From: Morristown, NJ
BNR update 
I just spoke to my son tonight, goodfellaFD3s. And, based on his comments so far,
(“…the car is fast as ****! Z0-6 doesn’t stand a chance! I think it’s faster than Ihor’s car!) (Ihor’s FD is a single turbo that just dynode at 570rwhp w/20PSI boost and race gas at KD rotary this past December). 
So the BNR's are looking better and better.
He and Steve just rebuilt his motor and Steve did a little exhaust porting to compliment the clipped turbine wheels.
Rich has approximately 700 miles on the new engine and Steve just completed tweaking the settings in his Power FC tonight.
He’s running 850 primary’s, replaced his mid-pipe… (off with the high flow cat).
He’s Dyno testing the car this weekend @ Rotary performance and I will publish the sheets on our web page. I’ll post the page URL soon as I update it.
His anecdotal impressions so far?
1. The car shows no sign of low speed bog or turbo lag.
2. Turbos spool up fast… Power seems to be more immediate unlike the sequential feel of building. The parallel setup seems to explode with power!
3. Power is always present and total through all RPM ranges.
4. Acceleration is a problem. He burns through 1st & 2nd and can’t hookup. So, he has to back off to get any traction. He’s running pole positions
5. WOT acceleration through 3rd & 4th …is blindingly fast, forget about it…
6.
: A Z0-6 doesn’t stand a chance.
7. Steve’s impression, the car’ll prolly trap at high 120’s MPH with easy launches to prevent drive train damage.
I just spoke to my son tonight, goodfellaFD3s. And, based on his comments so far,
(“…the car is fast as ****! Z0-6 doesn’t stand a chance! I think it’s faster than Ihor’s car!) (Ihor’s FD is a single turbo that just dynode at 570rwhp w/20PSI boost and race gas at KD rotary this past December). So the BNR's are looking better and better.He and Steve just rebuilt his motor and Steve did a little exhaust porting to compliment the clipped turbine wheels.
Rich has approximately 700 miles on the new engine and Steve just completed tweaking the settings in his Power FC tonight.
He’s running 850 primary’s, replaced his mid-pipe… (off with the high flow cat).
He’s Dyno testing the car this weekend @ Rotary performance and I will publish the sheets on our web page. I’ll post the page URL soon as I update it.
His anecdotal impressions so far?
1. The car shows no sign of low speed bog or turbo lag.
2. Turbos spool up fast… Power seems to be more immediate unlike the sequential feel of building. The parallel setup seems to explode with power!
3. Power is always present and total through all RPM ranges.
4. Acceleration is a problem. He burns through 1st & 2nd and can’t hookup. So, he has to back off to get any traction. He’s running pole positions
5. WOT acceleration through 3rd & 4th …is blindingly fast, forget about it…
6.
: A Z0-6 doesn’t stand a chance.7. Steve’s impression, the car’ll prolly trap at high 120’s MPH with easy launches to prevent drive train damage.
Last edited by karken29; Jan 17, 2003 at 11:59 PM.
Hey, where did my $$$ go?
Joined: Feb 2001
Posts: 4,413
Likes: 0
From: Bimingham, AL
WOW, I'm really getting excited to see how much differance the clip is going to make!!!! If its this much I might just pull mine off for a clip.
Mine were proto types anyway just to make sure it would work good. Brian spend much more time with the finished ones like Rich has. Mine were barely even balanced!!!! Hopefully the clip will make a huge differance!!!!
STEPHEN
Mine were proto types anyway just to make sure it would work good. Brian spend much more time with the finished ones like Rich has. Mine were barely even balanced!!!! Hopefully the clip will make a huge differance!!!!
STEPHEN
Joined: Oct 2001
Posts: 4,772
Likes: 2
From: My 350Z Roadster kicks my RX7's butt
Custom manifold secret sauce, damn nagit!! 
If you couldn't access the video, try this linkTry this "link" here.
If you couldn't access the video, try this linkTry this "link" here.
makes me wonder how JimLab is going to hook up with 650 hp at the wheels and ALOT more torque
whenever you think you are the biggest and baddest, there is always someone bigger and badder
with that said, these BNRs sound like the way to go for anything but the dragstrip (13B)
whenever you think you are the biggest and baddest, there is always someone bigger and badder
with that said, these BNRs sound like the way to go for anything but the dragstrip (13B)
Hey, where did my $$$ go?
Joined: Feb 2001
Posts: 4,413
Likes: 0
From: Bimingham, AL
Originally posted by yzf-r1
makes me wonder how JimLab is going to hook up with 650 hp at the wheels and ALOT more torque
whenever you think you are the biggest and baddest, there is always someone bigger and badder
with that said, these BNRs sound like the way to go for anything but the dragstrip (13B)
makes me wonder how JimLab is going to hook up with 650 hp at the wheels and ALOT more torque
whenever you think you are the biggest and baddest, there is always someone bigger and badder
with that said, these BNRs sound like the way to go for anything but the dragstrip (13B)
Nothing to wonder about there....he's not, I dont even hook racing from a kick unless its over about 65-70
Why wouldnt they be the way to go for the dragstrip? 10's on ET streets and pump gas is obtainable with this much power.
I dont follow what your saying
STEPHEN
Why wouldnt they be the way to go for the dragstrip? 10's on ET streets and pump gas is obtainable with this much power.
I dont follow what your saying
what I'm saying is the a single turbo still has more ultimate power potential for the strip, although the street driveability usually suffers
I dont follow what your saying
what I'm saying is the a single turbo still has more ultimate power potential for the strip, although the street driveability usually suffers
Senior Member
Joined: Nov 2002
Posts: 347
Likes: 1
From: Morristown, NJ
Artguy.... Rich said he's held the boost to no more than 16psi when Steve tuned him... Steve discovered something funky with his O2 sensor, which was causing him to run pretty rich at idle.
His main concern though is safe power that won't grenade another engine. He’s been mostly running at 12PSI and says the car is melting the tires in 1st & 2nd. 
He can brake his *** loose in 3rd as well. Earliest 
Rotary Performance can schedule him in for dyno pulls is Monday.
I’m gonna be curious to see what Rich’s torque looks like at the various boost settings.
Ihor’s torque curve seemed to peak out @ 6,500RPM, as memory serves, even though his HP continued to climb @ 7,000RPM when
Dave cutoff the pull. 
Should be interesting.
His main concern though is safe power that won't grenade another engine. He’s been mostly running at 12PSI and says the car is melting the tires in 1st & 2nd. He can brake his *** loose in 3rd as well. Earliest Rotary Performance can schedule him in for dyno pulls is Monday. I’m gonna be curious to see what Rich’s torque looks like at the various boost settings.
Ihor’s torque curve seemed to peak out @ 6,500RPM, as memory serves, even though his HP continued to climb @ 7,000RPM when
Dave cutoff the pull. Should be interesting.
Last edited by karken29; Jan 18, 2003 at 04:33 PM.
Thread Starter
Banned. I got OWNED!!!
Joined: Feb 2001
Posts: 102
Likes: 0
From: Silicon Valley Bay Area
Originally posted by karken29
BNR update
I just spoke to my son tonight, goodfellaFD3s. And, based on his comments so far, (“…the car is fast as ****! Z0-6 doesn’t stand a chance! I think it’s faster than Ihor’s car!) (Ihor’s FD is a single turbo that just dynode at 570rwhp w/20PSI boost and race gas at KD rotary this past December). So the BNR's are looking better and better.
He and Steve just rebuilt his motor and Steve did a little exhaust porting to compliment the clipped turbine wheels.
Rich has approximately 700 miles on the new engine and Steve just completed tweaking the settings in his Power FC tonight.
He’s running 850 primary’s, replaced his mid-pipe… (off with the high flow cat).
He’s Dyno testing the car this weekend @ Rotary performance and I will publish the sheets on our web page. I’ll post the page URL soon as I update it.
His anecdotal impressions so far?
1. The car shows no sign of low speed bog or turbo lag.
2. Turbos spool up fast… Power seems to be more immediate unlike the sequential feel of building. The parallel setup seems to explode with power!
3. Power is always present and total through all RPM ranges.
4. Acceleration is a problem. He burns through 1st & 2nd and can’t hookup. So, he has to back off to get any traction. He’s running pole positions
5. WOT acceleration through 3rd & 4th …is blindingly fast, forget about it…
6.: A Z0-6 doesn’t stand a chance.
7. Steve’s impression, the car’ll prolly trap at high 120’s MPH with easy launches to prevent drive train damage.
BNR update
I just spoke to my son tonight, goodfellaFD3s. And, based on his comments so far,
(“…the car is fast as ****! Z0-6 doesn’t stand a chance! I think it’s faster than Ihor’s car!) (Ihor’s FD is a single turbo that just dynode at 570rwhp w/20PSI boost and race gas at KD rotary this past December). So the BNR's are looking better and better.He and Steve just rebuilt his motor and Steve did a little exhaust porting to compliment the clipped turbine wheels.
Rich has approximately 700 miles on the new engine and Steve just completed tweaking the settings in his Power FC tonight.
He’s running 850 primary’s, replaced his mid-pipe… (off with the high flow cat).
He’s Dyno testing the car this weekend @ Rotary performance and I will publish the sheets on our web page. I’ll post the page URL soon as I update it.
His anecdotal impressions so far?
1. The car shows no sign of low speed bog or turbo lag.
2. Turbos spool up fast… Power seems to be more immediate unlike the sequential feel of building. The parallel setup seems to explode with power!
3. Power is always present and total through all RPM ranges.
4. Acceleration is a problem. He burns through 1st & 2nd and can’t hookup. So, he has to back off to get any traction. He’s running pole positions
5. WOT acceleration through 3rd & 4th …is blindingly fast, forget about it…
6.
: A Z0-6 doesn’t stand a chance.7. Steve’s impression, the car’ll prolly trap at high 120’s MPH with easy launches to prevent drive train damage.
Rotary Enthusiast
Joined: May 2002
Posts: 971
Likes: 0
From: San Diego
Originally posted by pratch
They aren't inaccurate, they are just two different ways of reading the power, and thusly give two different results.
They aren't inaccurate, they are just two different ways of reading the power, and thusly give two different results.
I don't see how you can come up with too WAY different figures (as far as accuracy is concerned) with a simple given. 1hp = 1hp! Threre's nothing relative about it...
Mazspeed.com
Joined: Oct 2002
Posts: 1,172
Likes: 0
From: Maryland
http://www.g-force-motorsport.co.uk/...detail%202.htm
read through that and understand where some of the differences come from.
Cheers.
read through that and understand where some of the differences come from.
Cheers.
Banned. I got OWNED!!!
Joined: Jun 2002
Posts: 3,323
Likes: 1
From: Buckhead
Originally posted by SPOautos
Mine is Dynojet, but Beast from the East wants to compare his findings to mine and his are Dynapak, we dont know how they compare. Thats why I was asking if anyone knows how they compare to eachother
STEPHEN
Mine is Dynojet, but Beast from the East wants to compare his findings to mine and his are Dynapak, we dont know how they compare. Thats why I was asking if anyone knows how they compare to eachother
STEPHEN
read the entire thread.
Rotary Enthusiast
Joined: Mar 2001
Posts: 1,392
Likes: 0
From: Mechanicsburg, PA USA
Just a side note, I noticed that the comparison of Greg's M2 sequential vs. BNR non-seq looks like it favors the BNRs non-seq even down low. Only thing is Greg's dyno doesn't look like a typical sequential hp curve. I found a dyno posted recently with a just an intake, dp, Power FC, and 99 turbos running sequential (probably 14-15 psi - doesn't say). He pulled 297 rwhp but his hp down low blows Greg's away. He had 140 rwhp by 2.5K, 220 rwhp by 3K, and 240 rwhp by 3.5K - although the non-seq BNRs blow by him in the midrange, it shows that a typical sequential car will have much more power below 4K than a non-seq car. Still have to love the non-seq BNR powerband though - incredible.
Rotary Enthusiast
Joined: Mar 2001
Posts: 1,023
Likes: 0
From: Edwards, CA
Whoa whoa, hold the mustard! SPO's graph on Wargasm's sight looks incorrect. http://www.catenet.net/dyno.php Look at the low end there and compare it to the chart Stephen actually posted.....
WTB** Very Low Miles 94-95
Joined: Jul 2001
Posts: 3,298
Likes: 0
From: Tejas
the one on catenet is what i expected from the set....
whats with that???
rich will have a set done soon...another to compare to will be nice.
the m2 set is sequential...ive seen that car with my own eyes..and i have seen his turbos close up.
I will have my dyno sheet in another week AT THE EARIEST...soon regardless....I we can compare my set to gregs at that time.
j
whats with that???
rich will have a set done soon...another to compare to will be nice.
the m2 set is sequential...ive seen that car with my own eyes..and i have seen his turbos close up.
I will have my dyno sheet in another week AT THE EARIEST...soon regardless....I we can compare my set to gregs at that time.
j