Single Turbo RX-7's Questions about all aspects of single turbo setups.

What RWHP you guys putting down on pump gas?

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Old 12-01-04, 07:35 PM
  #51  
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^what rpm do you reach full boost with that 62-1? Is it a bushing or ball bearing?
Old 12-01-04, 07:51 PM
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470 rwhp @ 18psi on pump gas (91 octane), T78, street ported (Magnus Motorsports), tuned by Marco.
Old 12-01-04, 10:22 PM
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583 rwhp 1st gen

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turbo II engine
street port
t60-1
1.15 a/r exhaust
microtech
550 pri.
720 sec.
9 psi boost
377 rwhp on 91 octane
changing the whole setup and going to a 95 engine with a 72 a/r comp and 0.96 a/r turbine with streetport and 1600 cc sec. injectors and boost controller to run 16 psi.
2 days away from starting the fresh built engine and maybe 2 weeks before dyno time hoping for mid 400 , what do you guys think is it possible?
best part about it is that everything done inhouse and its actually in a 1st gen rx7.
:-)
Old 12-01-04, 10:23 PM
  #54  
583 rwhp 1st gen

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by the way the torque was 330 ftlbs
Old 12-01-04, 10:57 PM
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Originally Posted by 1sgen
turbo II engine
street port
t60-1
1.15 a/r exhaust
microtech
550 pri.
720 sec.
9 psi boost
377 rwhp on 91 octane
changing the whole setup and going to a 95 engine with a 72 a/r comp and 0.96 a/r turbine with streetport and 1600 cc sec. injectors and boost controller to run 16 psi.
2 days away from starting the fresh built engine and maybe 2 weeks before dyno time hoping for mid 400 , what do you guys think is it possible?
best part about it is that everything done inhouse and its actually in a 1st gen rx7.
:-)
Am I the only one that thinks those are some damn good numbers for only 9 psi?
Old 12-01-04, 11:02 PM
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nope...they are pretty optimistic.

386 @ 12.5 psi on 91
half bridge 9:1 rotors
62-1, 1.15 p-trim

i'm out of fuel pump, so i'll get back to you with the 16-18 psi numbers....look for around 450
Old 12-01-04, 11:05 PM
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are 550/720's even enough for 377?
Old 12-01-04, 11:13 PM
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i have original t2 injectors which are 550 for pri. and rc engineering 720 for sec.
mt pulse width is around 7.5 ms at 9 psi
watching the AFR dropping down from 14 to 11 at 3500 rpm when the sec cut in
remember im tuning with a microtech and AFR numbers are of the dyno figures
Old 12-01-04, 11:14 PM
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Originally Posted by GUITARJUNKIE28
are 550/720's even enough for 377?
Yeah, this same thought came to my mind...
Old 12-01-04, 11:18 PM
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also something else iam running a street port and not a bridge and fuel pressure makes a big difference , i am running 45 psi fuel pressure at idle and goes up to 60 at full boost
Old 12-01-04, 11:20 PM
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iam running a street port and not a bridge and fuel pressure makes a big difference , i am running 45 psi fuel pressure at idle and goes up to 60 at full boost.
also forgot to mention i have an injection perfection IDA intake.
Old 12-02-04, 04:57 PM
  #62  
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Originally Posted by DelSlow
^what rpm do you reach full boost with that 62-1? Is it a bushing or ball bearing?
I get full boost between 5000 and 5500 rpms and it is not ball bearing.
Old 12-03-04, 12:41 AM
  #63  
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Originally Posted by 1sgen
turbo II engine
street port
t60-1
1.15 a/r exhaust
microtech
550 pri.
720 sec.
9 psi boost
377 rwhp on 91 octane
Old 12-03-04, 12:48 AM
  #64  
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492 RWHP @ 23lb boost with 393 Torque
Old 12-03-04, 12:53 AM
  #65  
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Originally Posted by rob20rx7
492 RWHP @ 23lb boost with 393 Torque
i like the low comp rotors

not many go that route
Old 12-03-04, 02:05 AM
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good for when you don't have to spin the motor all that fast.
Old 12-03-04, 02:28 AM
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500-1k rpm is not a huge deal when you limit your power band due to a huge turbo (drag). Saftey is hard to put in to numbers. I was making the comment on the big FD hp players.

you can also lighten them up too by removing material.

Balancing will help too.
Old 12-03-04, 05:15 AM
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:d
Old 12-03-04, 01:36 PM
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Originally Posted by rob20rx7
492 RWHP @ 23lb boost with 393 Torque
Finally making some real power!
You got to love the SMC kit.
Old 12-03-04, 10:48 PM
  #70  
583 rwhp 1st gen

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Originally Posted by Directfreak
some people seem to have problems excepting other peoples achievments
if you were ever in the north texas area you are welcome to swing around and check my car and numbers may be you will wake up and look outside your own circle .
people that are open minded and try to learn instead of critisize are the ones that get ahead . i was not born with what i know , but i asked and listened and learned.
look at guitar junkie he is making 386 at 12.5 psi , there is your proof
are you listening : direct freak
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Old 12-03-04, 11:00 PM
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Originally Posted by 1sgen
some people seem to have problems excepting other peoples achievments
if you were ever in the north texas area you are welcome to swing around and check my car and numbers may be you will wake up and look outside your own circle .
people that are open minded and try to learn instead of critisize are the ones that get ahead . i was not born with what i know , but i asked and listened and learned.
look at guitar junkie he is making 386 at 12.5 psi , there is your proof
are you listening : direct freak
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Um, I wasn't criticizing you, dude. I'm very impressed if you're actually making those kinda number at those boost levels. I am in no position to say something is impossible. However, I would definitely disagree that a gain of 9 whp from 3 psi is "proof" that you actually made 377 especially considering Guitarjunkie is running a half-bridge and you're running a street port.
Old 12-03-04, 11:11 PM
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actually , everage gain of hp per 1 pound of boost is 3-4 hp with the right tuner, and i guess if you take 15% off that for the drive train , the 9 whp that he made sound about right
Old 12-03-04, 11:27 PM
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Originally Posted by 1sgen
actually , everage gain of hp per 1 pound of boost is 3-4 hp with the right tuner, and i guess if you take 15% off that for the drive train , the 9 whp that he made sound about right
Whaaat??? Now I really think you're off-base. I was just at the dyno 2 weeks ago and gained from 12-15 hp/psi depending on the boost level (13-20 psi).
Old 12-03-04, 11:43 PM
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Originally Posted by 1sgen
some people seem to have problems excepting other peoples achievments
if you were ever in the north texas area you are welcome to swing around and check my car and numbers may be you will wake up and look outside your own circle
I am listening, and still don't believe you.

Your setup is not that uncommon except for your intake. Many cars run the same
engine, streetported in all with a small 60-1 like yours. 377 whp does not come at
only 9 psi. It takes many cars 14 psi or more for those kind of numbers.

I believe you have some boost creep there and may not be realizing it. Or, you may
be full of it.

If you had big Turbo, then maybe it would be realistic. A dyno sheet can be easily
manipulated by a tuner, so it's not the end all and be all of the subject.

Show me some 1/4 mile runs with your mph, and then I may believe it. I am not arguing
with you, I just don't believe it.

We can agree to disagree if you like.
Old 12-03-04, 11:45 PM
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so you are saying that you will gin 12- 15 hp for each pound of boost so that means with 3 more psi i can get up to 45 hp , i dont mind that at all


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