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

whoever said getting rid of your twins was good hasn't seen this setup!!!!

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Old Nov 19, 2009 | 06:04 PM
  #76  
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Originally Posted by Evil Aviator
Thank you! That is exactly what I am talking about. A lot of dumb asses are knocking my idea about twin GT55s despite the fact that NOBODY has even tried it yet. All of these haters think that book knowledge and similar experience is worth something, while we regular guys all know that it means nothing unless you actually try it yourself to see how it works.
LOL, you are killing me
Old Nov 20, 2009 | 08:57 PM
  #77  
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Originally Posted by T04Eneedy
damn! i guess your too cool to use a wastegate! lol badass setup man,whats the rest of the engine setup?
I am going to use wastegates the build is not finished yet, dont worry guys dyno results are gonna come. just be patient.
Old Nov 22, 2009 | 09:39 PM
  #78  
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damn Andrew, that's looking pretty sick! When are we going to the track again?... I don't think I wanna race you this time
Old Nov 26, 2009 | 04:37 PM
  #79  
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Personally, I would never invest in this setup. A nicely sized single will do what 99% of what people want... Including myself.

It is an interesting setup though. Props for the fab work & innovation.
Old Nov 26, 2009 | 10:25 PM
  #80  
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Originally Posted by ANDOROTOR
I use twin to4e's on my s5 extended port motor.I have only ever had twins on the motor,it's super responsive,revs to 11k without laying over,the turbos are super reliable(a nice side effect of twins).IMO at my boost pressure(34psi) it makes really good power.
Best time-7.21@173(yes 1/4 mile lol).
1600lbs with me in it.
thats the kind of stuff i like to hear!!

what kind of power is your setup putting out?
could we see a dyno graph by any chance?
any pics of the engine?

thank you!
Old Nov 27, 2009 | 05:31 AM
  #81  
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How much power am i making now?To be honest we don't know,we have only dynoed it once on a chassis dyno and it was in feb last year.With what i would call "small port" s5 ports,very rich tuneup and ex housings which were way too big it made 613hp at the tires on 25psi.We do all our tuning at the track.
Since it was dynoed i have gone bigger on the intake ports and upped the boost a fair wack.

http://img21.imageshack.us/img21/426...ndtrack004.jpg
http://img686.imageshack.us/img686/7...ndtrack007.jpg
cheers glenn
Old Nov 27, 2009 | 07:45 AM
  #82  
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Wow!!! That is just rediculous! Very nice setup man!
Old Nov 27, 2009 | 09:21 AM
  #83  
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Originally Posted by ANDOROTOR
How much power am i making now?To be honest we don't know,we have only dynoed it once on a chassis dyno and it was in feb last year.With what i would call "small port" s5 ports,very rich tuneup and ex housings which were way too big it made 613hp at the tires on 25psi.We do all our tuning at the track.
Since it was dynoed i have gone bigger on the intake ports and upped the boost a fair wack.

http://img21.imageshack.us/img21/426...ndtrack004.jpg
http://img686.imageshack.us/img686/7...ndtrack007.jpg
cheers glenn
Glenn,

What exhaust housings did you have that were too big and what do you have now? What size turbine wheels are you running? P trims?
Old Nov 27, 2009 | 01:53 PM
  #84  
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Originally Posted by 1Revvin7
Glenn,

What exhaust housings did you have that were too big and what do you have now? What size turbine wheels are you running? P trims?
The exhaust housings in the photo were too big.Sorry,but you'll have to figure the rest out for youself
Old Nov 27, 2009 | 03:44 PM
  #85  
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Originally Posted by Evil Aviator
Oh, now I get it. For example, twin GT55 turbos will spool quicker than a single GT28 turbo, period. Also, the whole point is to spool really fast to make huge power, which is why a large single turbo never makes more power than the stock twin turbos.

Now I am giong to install twin GT55s on my car so that I can beat out your car for the title of the fastest-spooling RX-7 in the world.
You're out here busting this guys ***.. why?

I ran a ball bearing T76 with a .68 a/r which would begin boost around 2200 revs (ign map wasn't too aggressive). With the 1.0 a/r hotside it wouldnt be into boost until much later. There was some give/take with that setup but i didn't need 9k rpm range.

Stop busting his ***** when you clearly dont have all the facts.
Old Nov 27, 2009 | 07:43 PM
  #86  
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Originally Posted by hwnd
I ran a ball bearing T76 with a .68 a/r which would begin boost around 2200 revs (ign map wasn't too aggressive). With the 1.0 a/r hotside it wouldnt be into boost until much later. There was some give/take with that setup but i didn't need 9k rpm range.
Don't you think that your engine would have spooled much faster with twin T76s?
Old Nov 27, 2009 | 09:17 PM
  #87  
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Originally Posted by Evil Aviator
Don't you think that your engine would have spooled much faster with twin T76s?
no not at all, would have made for a lag-o-thon setup.

I didn't get the feeling that the OP's idea was "twin turbos spool faster" but if in his ramblings he did say that then I wouldn't disagree with anything you've said to him. I just didn't get the feeling his thoughts were along those lines. I'm going back to re-read his posts.


::edit::


Originally Posted by amunoz3
Having twins period spools quicker than any single turbo. the whole point is to make the same air volume to make huge power like a t66 but to spool really fast.........


Nevermind, I'm with you... he is retarded.

Last edited by hwnd; Nov 27, 2009 at 09:21 PM.
Old Nov 28, 2009 | 04:25 PM
  #88  
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Originally Posted by hwnd
no not at all, would have made for a lag-o-thon setup.

I didn't get the feeling that the OP's idea was "twin turbos spool faster" but if in his ramblings he did say that then I wouldn't disagree with anything you've said to him. I just didn't get the feeling his thoughts were along those lines. I'm going back to re-read his posts.


::edit::






Nevermind, I'm with you... he is retarded.
keep reading........ i corrected myself and meant 2 smaller turbos will respond similar to a big turbo. by saying twins spool faster than any single turbo....... means for the exact power gains............
Old Nov 28, 2009 | 05:35 PM
  #89  
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Originally Posted by amunoz3
keep reading........ i corrected myself and meant 2 smaller turbos will respond similar to a big turbo. by saying twins spool faster than any single turbo....... means for the exact power gains............
there is no scientific reason why twins should have less lag, earlier boost threshold than properly sized single....
Old Nov 28, 2009 | 07:38 PM
  #90  
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if you read timemachines post at the beginning of the thread he mentions hcs twins that they have spooled super fast. Its just funny how people who have experienced the twins think they are super nice.
Old Nov 28, 2009 | 07:49 PM
  #91  
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Originally Posted by amunoz3
if you read timemachines post at the beginning of the thread he mentions hcs twins that they have spooled super fast. Its just funny how people who have experienced the twins think they are super nice.

you can go die now -->
Old Nov 29, 2009 | 09:06 AM
  #92  
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Originally Posted by amunoz3
if you read timemachines post at the beginning of the thread he mentions hcs twins that they have spooled super fast. Its just funny how people who have experienced the twins think they are super nice.
and then again, all major rotary drag racing records were put down by single turbo combos.... There is too much variables there.... Such twins are sitting on fairly long manifold...Right?? Apply same thing to single and it will be even better... then there is problem with sizing, like GT42 sized turbos on 500 whp combos...
Old Nov 29, 2009 | 11:49 AM
  #93  
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something amazing i learned today

turbo fanboys>video game fanboys

flame on......
Old Nov 30, 2009 | 07:00 PM
  #94  
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Originally Posted by stylEmon
damn Andrew, that's looking pretty sick! When are we going to the track again?... I don't think I wanna race you this time
Ill take him on again.. Im not afraid.
Old Dec 1, 2009 | 03:54 AM
  #95  
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Originally Posted by stylEmon
damn Andrew, that's looking pretty sick! When are we going to the track again?... I don't think I wanna race you this time
Lol thanks we can go to the track whenever it leaves its second home (the shop).
Old Dec 1, 2009 | 06:54 AM
  #96  
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i always thought the more exshust you put out the better so two turbo to power the better no???????????????
Old Dec 1, 2009 | 11:40 AM
  #97  
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Originally Posted by zeaone
i always thought the more exshust you put out the better so two turbo to power the better no???????????????
i always thought capitalization and punctuation were always over rated because **** like commas and periods are stupid no???????????????????

Please practice and return once you've reached a high score:
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Old Dec 1, 2009 | 01:38 PM
  #98  
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^lol!!!
Old Dec 1, 2009 | 06:11 PM
  #99  
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Originally Posted by zeaone
i always thought the more exshust you put out the better so two turbo to power the better no???????????????
Well the purpose of this turbo setup really is to have one turbo for every exhaust port and 2 3inch downpipes to a 4inch exhaust. So really its like having a 41/2 inch dp to a 4 inch exhaust. And more exhaust flow results in a faster spool rate.
Old Dec 1, 2009 | 08:36 PM
  #100  
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So.... twin GT55's with 5" downpipes on each turbo will spool faster than a single GT35R with a 3" downpipe. I get it now!



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