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

sweet ball bearing twin turbo kit coming!

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Old Dec 11, 2002 | 10:43 PM
  #26  
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From: Tejas
are there pics of the manifold?

please explain what is done to the manifold...is it a hollowed out stock manifold for more flow...or is it a completely different custom manifold?

I run the m2 set right now...gt30 internals...was curious as to what the differences will be in regards to the manifold restriction and peak power numbers.

i like the m2 set tremendously. Im very happy with the spoolup time etc. I would be interested in seeing what the solution to the manifold problem was...and to what you expect the power range to be...both peak and reliably.


thanks'


j
Old Dec 11, 2002 | 10:47 PM
  #27  
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also...what other modifications are needed...ypipe, actuator lengths etc...


j
Old Dec 11, 2002 | 11:21 PM
  #28  
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sorry the air pump will not be compatible

Originally posted by ZeroBanger
Will these upgraded twins allow retention of the smog pump?

CALI sucks you know.
Old Dec 11, 2002 | 11:24 PM
  #29  
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Heath,
We have not dynoed this kit yet..we are in the process of getting the first kit and jig done first..were almost done. were hoping for some serious power!


Originally posted by Heath
Any speculation on what kind of hp numbers a twin kit will produce compared to a single gt35/40, t-78, or to4r etc. on the same engine?
Old Dec 11, 2002 | 11:25 PM
  #30  
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yes.

Originally posted by GotBoostd7
A-Spec,

Do the turbos you plan on using have an internal wastegate, like the Apexi turbos in the Border kit?
Old Dec 11, 2002 | 11:27 PM
  #31  
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we will not be using the stock manifold..the mainfold will be a tubular style each runner will have its own turbo.


Originally posted by artguy
are there pics of the manifold?

please explain what is done to the manifold...is it a hollowed out stock manifold for more flow...or is it a completely different custom manifold?

I run the m2 set right now...gt30 internals...was curious as to what the differences will be in regards to the manifold restriction and peak power numbers.

i like the m2 set tremendously. Im very happy with the spoolup time etc. I would be interested in seeing what the solution to the manifold problem was...and to what you expect the power range to be...both peak and reliably.


thanks'


j
Old Dec 12, 2002 | 01:15 PM
  #32  
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What is the smallest size GT turbo that does not have an internal waste gate?
Old Dec 12, 2002 | 02:06 PM
  #33  
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Mercury - do you mean, what is the largest size GT turbo that doesn't have an internal wastegate?
Old Dec 12, 2002 | 02:47 PM
  #34  
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Thanks A-Spec Tuning. I'm sure you will keep us updated as to your results. I'll be anxiously awaiting dyno numbers
Old Dec 12, 2002 | 04:19 PM
  #35  
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Originally posted by nocab72
Mercury - do you mean, what is the largest size GT turbo that doesn't have an internal wastegate?
<grin> I want to know the smallest size turbo that does not have an internal wastegate.

If I want to do a twin setup I dont want internal wastegates and I dont want to run two of the largest GT's series turbos. =']

Last edited by Mercury; Dec 12, 2002 at 04:37 PM.
Old Dec 12, 2002 | 05:37 PM
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The kits will come with GT25 or 28 turbo's depending on what your looking for, pricing is not set yet because the kit isn't finished yet. The turbos have integral wastgates, this should be a very responsive setup. I don't have any other info than that at this time.I will keep you informed
Old Dec 12, 2002 | 05:54 PM
  #37  
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If I remember correctly the Gt28 is the smallest you can get without the integrated wastgate.
Old Dec 12, 2002 | 05:59 PM
  #38  
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What about possibly using the HKS (Garrett) GT2835R's? No internal wastegates. Same as that bright facking orange SP Engineering car, I think.

But hey, I'm sure you guys got it all figured out, and know what's best for the kit. I'm just throwing it out there.
Old Dec 12, 2002 | 06:59 PM
  #39  
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Steve,
You should be the forum "guinea pig".... It will be interesting to see the dyno numbers and chart. (You will dyno for all of us won't you..? LOL)
Old Dec 12, 2002 | 07:01 PM
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****...I'll be a guinea pig
Old Dec 12, 2002 | 07:02 PM
  #41  
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Yowza!!

could this be the "missing link" turbo??
power of a big single,spool of the twins?



C.
Old Dec 13, 2002 | 02:17 AM
  #42  
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what wuold be the benefit of going with 2 turbos instead of one? wont splitting up the # of exhaust pulses hurt spool up time?
Old Dec 13, 2002 | 02:35 AM
  #43  
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It takes less time to spool two small turbos rather than one large one. Also they can flow like a ****. =']

-M
Old Dec 13, 2002 | 06:37 PM
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I would think going with external wastgates would cause a big increase in price, that's more than likely why they went with the integrated ones.
Old Dec 14, 2002 | 04:52 PM
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when is the kit expected to be complete?
cant wait..haha
Old Dec 14, 2002 | 10:13 PM
  #46  
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gt2835 is the smallest one without internal wastegate. if you want to use internal wastegate turbos go with the gt-rs they can push more hp than the internal wastegate 2835.
there is 14 different sized 2835 that push from 380 to 420hp
we have a car at the shop that has twin 3037 on a full bridge the response is very bad.
if i was going to do twins for drag i would go with 2835r
if i wanted do do an economy twin kit i would use GT-RS's
my 2 cents
Old Dec 14, 2002 | 10:33 PM
  #47  
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so your saying the twinturbo kit's gonna look something like this one pictured right? when that turbo kits comes out imma buy myself a rx7 too i was reading about that orange twin turbo rx7 and it says its makes about 600hp, dam thats alot of power

are you guys almost done with the kit yet j/w? cant wait till it comes out
Old Dec 14, 2002 | 10:47 PM
  #48  
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i think there could be better positioning on that kit. push the top one back some and bring the lower one up some
Old Dec 16, 2002 | 12:13 PM
  #49  
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sp's car doesn't make 600hp. it doesn't even make 400.
Old Dec 16, 2002 | 06:38 PM
  #50  
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I have a hard time believing that a twin GT2835 13B doesn't make 400 bhp. Maybe if it isn't tuned for ****, but it certainly is capable of way more than 400 bhp.



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