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 10, 2009 | 07:34 PM
  #51  
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Originally Posted by amunoz3
what i had said was meaning in general......... and was regarding to small twins because of course.... two big gt55 would be ridiculous. It was meant for 2 smaller turbos compared to one big one.......... I have never disrespected you so do not disrespect me, if its something you do not get just pm me.

Catch a clue...he wasnt serious...Lol.
Old Nov 10, 2009 | 07:37 PM
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In my opinion, unless the twins are seq, they are counter-productive in all aspects vs an appropriate sized single turbo.
Old Nov 10, 2009 | 09:28 PM
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Originally Posted by WaachBack
In my opinion, unless the twins are seq, they are counter-productive in all aspects vs an appropriate sized single turbo.
That is definitely an opinion. "an appropriate sized single" will not have the same ebp characteristics of "appropriately sized parallel twins" And I am willing to bet in an equal intake flow scenario, the parallel twins will flow faster. Hard part: Finding a pair of turbos that together flow exactly like a specific single.
Old Nov 11, 2009 | 01:00 AM
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And even if you did find 2 twins that flow the exact same as a single, the twin setup would cost almost twice as much. It also adds complexity, which I hate.
Old Nov 11, 2009 | 05:52 AM
  #55  
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Originally Posted by fdracer
the rb26 is an inline 6 engine.
Awesome! Hmm, therefore, if that engine is exactly like a 13B, then twin 60-1 tO4s would have been better than the twin GT2860R-5s used by bc_fd3s. Therefore, my idea about twin GT55s is even better!
Old Nov 11, 2009 | 11:51 AM
  #56  
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Originally Posted by WaachBack
And even if you did find 2 twins that flow the exact same as a single, the twin setup would cost almost twice as much. It also adds complexity, which I hate.
I agree. It adds complexity everywhere but the exhaust path from engine to turbo.
Old Nov 11, 2009 | 06:44 PM
  #57  
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Originally Posted by Evil Aviator
Awesome! Hmm, therefore, if that engine is exactly like a 13B, then twin 60-1 tO4s would have been better than the twin GT2860R-5s used by bc_fd3s. Therefore, my idea about twin GT55s is even better!

ok i keep seeing the whole twin GT55s thing, and i've got to ask.. WTF? this aint an outlaw 10.5 car..

unless there is a different gt55 that garrett makes.. lol
Old Nov 11, 2009 | 06:51 PM
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it's sarcasm. And it's been drawn out pretttty long.
Old Nov 11, 2009 | 07:41 PM
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How many sarcastic bumbass, stupid people are on this forum
Old Nov 11, 2009 | 08:44 PM
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I agree.

Half of the dumb asses on this forum have no experience to back up their comments, so it's useless to argue. They think that their high post counts count for something, when in fact it just means they spend too much time on the computer arguing and not enough time actually working on their cars.
Old Nov 11, 2009 | 08:53 PM
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you guys are all missing the point. this setup has a badass factor of 11. you cant tell me that if you walked over and peeked under the hood you wouldnt **** your pants a little, giggle like a 12 year old school girl, then try to convince the owner to let you drive it!
Old Nov 11, 2009 | 11:51 PM
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Originally Posted by bc_fd3s
I agree.

Half of the dumb asses on this forum have no experience to back up their comments, so it's useless to argue. They think that their high post counts count for something, when in fact it just means they spend too much time on the computer arguing and not enough time actually working on their cars.
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.
Old Nov 12, 2009 | 12:22 AM
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LOL!! The guys in the actual know are being sarcastic, and there's a ton of newbie idiots who don't seem to be catching on because their ignorance gets in their way!! This is truly funny and sad! Seriously, I realize this is an open public forum, but know when to SHUT UP, read and learn, you don't have to post on every thing especially if you don't know **** about it. It's funny how people have "theories" of ****, but totally ignore facts and physics! And for those who don't get it yet, Evil is MOCKING YOU!

~Mike.............
Old Nov 12, 2009 | 01:20 AM
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For the guy with the RB26 being twin turbo...guess what? Most response, power, best heat control, etc...guys go single. V6 are the only exceptions due to the extra piping needed and room for a single.
Old Nov 12, 2009 | 06:43 AM
  #65  
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So much of this thread is retarded

Originally Posted by ronbros3
when is someone goin to tandem turbs. like a small(quick spool) blowin into a large turb. thats spooled and. comes on later,with a lot of air.

supras are gettin good boost as low as 2500rpm.

course diesels been doin it for 20yrs
Biggest advantage of this is not only can you have the power of the big turbo and the spool of the small, it is that once the bigger turbo is doing most the work, the little turbine poses zero real restriction, making for a high boost to backpressure ratio if done correctly.

Im concerned about heat soak in a rotary enginebay though, and because of this im trying at the mo (on a turbo 4cyl, I dont want to kill my rotary in the name of testing!) a front mounted smaller turbo and a rear mounted bigger one. I have 3 sizes ranging from ~500bhp to ~1000bhp im going to test for the bigger of the two turbos (a GT3076, a 7 blade HX35, and GT4202) to see how well it works.
TBH im not hugely optimistic, but its not costing me anything much but time, so its worth a try....
Old Nov 14, 2009 | 10:26 AM
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Old Nov 14, 2009 | 06:09 PM
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HI, StavFC,,, talkin to the supra guys,, makin 2 WGs work together PROPERLY,(because of differences in flow,big turb, small turb) was a little time consuming.

but they got it down finally, 25psi at 2600rpm, all in at 38psi at 5500, and shift at 9400rpm.
Damn you cant beat them on a roll, 80-180mph.
one guy boasts ,never been beat on a 4gear roll, even superbikes.

and all i got is an RX7 13BT
Old Nov 14, 2009 | 08:14 PM
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Is it really worth the extra turbo clutter in the engine compt to get in your way when you need to work on your engine and the added failure point and cost?
Old Nov 15, 2009 | 02:25 AM
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Originally Posted by ultimatejay
Is it really worth the extra turbo clutter in the engine compt to get in your way when you need to work on your engine and the added failure point and cost?
Well we will see.....
Old Nov 18, 2009 | 12:31 AM
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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.
Old Nov 18, 2009 | 02:04 AM
  #71  
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^see you guys only the people who have tried the twins love it...... more pics for ya..Just keep in mind all this custom work is done by Elliot at Turblown Performance www.turblown.net forum name 1Revvin7 i recommend him for any custom work.
Old Nov 18, 2009 | 11:43 AM
  #72  
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damn! i guess your too cool to use a wastegate! lol badass setup man,whats the rest of the engine setup?
Old Nov 18, 2009 | 12:10 PM
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Badass, Post the numbers!!
Old Nov 19, 2009 | 05:16 PM
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Originally Posted by amunoz3
^see you guys only the people who have tried the twins love it...... more pics for ya..[COLOR="Red"][B]Just keep in mind all this custom work is done by Elliot at Turblown Performance www.turblown.net forum name 1Revvin7 i recommend him for any custom work.
please post numbersssss!!!!!
Old Nov 19, 2009 | 05:27 PM
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Have not tried a twin turbo setup so wont comment on how good or bad it is. I dont know.

But my single GT4202 gives me over 650rwhp by 5000rpm and still have over 650rwhp at 9500rpm.(car peaks at 703rwhp).

at 4000rpm my car is developing around 440rwhp.

If anyone with a twin setup has done better then this. POst up your dyno sheet. If you need me to post mine again. ill do it no dramas. its around here anyway.



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