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

GT 35/40 turbo Kits

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Old Mar 16, 2004 | 07:38 PM
  #26  
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From: My 350Z Roadster kicks my RX7's butt
Originally posted by Zero R
The 35R will way out produce on the top end if you were to turn up the two also, all those dyno's are with the old manifold design the newer design spools a little quicker still.

-Sean
Can you clarify: Is the 35/40 a combo of "both" the 35R & 40R?

Can the new kit for your 40R be used on the 35R? I like how the 40R kit sits lower and more rearward then the 35/40.

How much more of a spool delay (aka: lag) is the 40R then the 35R?

What is the sweet sopt on both of these? ...I don't want to boost more then 1bar.

The bigger the turbo, the less boost for the same HP but for a trade of spool delay. <- is that correct?
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Old Mar 18, 2004 | 03:15 PM
  #27  
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GoRacer: Yes I believe your last statement to be correct, but also what I'm interested in with the impending gas prices, where you need a 20yr mortgage to finance a tank, what seems to be the breaking point given, good IC setup that a GT35/40 will handle boost wise on pump gas !? (16+ Psi = race Gas needed ??)

Also Handling wise, you say you can light them up in third, which is fun to brag about, but how does it affect handling, say you want to change lanes, on the freeway, you floor it, and it breaks traction, now you're not flying down to catch that spot, but you're fighting for control of your car, that to me is a PITA, and why I'm not going to even look at T78....

Any Comments or experience with this !? Has anybody "Downgraded" for driveability's sake !?
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Old Mar 18, 2004 | 04:24 PM
  #28  
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From: look behind you
Originally posted by DCrosby
GoRacer: Yes I believe your last statement to be correct, but also what I'm interested in with the impending gas prices, where you need a 20yr mortgage to finance a tank, what seems to be the breaking point given, good IC setup that a GT35/40 will handle boost wise on pump gas !? (16+ Psi = race Gas needed ??)
I have run my car on 93oct 16lbs just fine.

Originally posted by DCrosby

Also Handling wise, you say you can light them up in third, which is fun to brag about, but how does it affect handling, say you want to change lanes, on the freeway, you floor it, and it breaks traction, now you're not flying down to catch that spot, but you're fighting for control of your car, that to me is a PITA, and why I'm not going to even look at T78....

Any Comments or experience with this !? Has anybody "Downgraded" for driveability's sake !?
I wouldn't worry to much about breaking them loos uncontrolably just roll on the throttle, you'll be fine.
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Old Mar 18, 2004 | 04:30 PM
  #29  
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From: look behind you
.

Last edited by Zero R; Mar 18, 2004 at 04:34 PM.
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Old Mar 18, 2004 | 04:31 PM
  #30  
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From: look behind you
Originally posted by GoRacer
Can you clarify: Is the 35/40 a combo of "both" the 35R & 40R?
No, it is not, it uses the same wheel from the GT40 not the 40R the term 35/40 is more of a street term

Originally posted by GoRacer

Can the new kit for your 40R be used on the 35R? I like how the 40R kit sits lower and more rearward then the 35/40.
The newer 35R kit sits in the same lower and back location go look at the thread DrPJM1 started "single turbo OMG"

Originally posted by GoRacer

How much more of a spool delay (aka: lag) is the 40R then the 35R?
minimal

Originally posted by GoRacer

What is the sweet sopt on both of these? ...I don't want to boost more then 1bar.
GT35R really starts to make power at 17psi the 40R isn't much different but will be cooler at those levels.

Originally posted by GoRacer

The bigger the turbo, the less boost for the same HP but for a trade of spool delay. <- is that correct?
somewhat
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Old Mar 18, 2004 | 07:46 PM
  #31  
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From: My 350Z Roadster kicks my RX7's butt
Originally posted by Zero R
I have run my car on 93oct 16lbs just fine.
We are in CA and only have 91oct pump gas.

This is the reason I am looking for the "most" efficient turbo with the sweet spot at 1bar and "not" over 17lbs.
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Old Mar 18, 2004 | 07:57 PM
  #32  
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When you say "Sweet Spot" I'm confused....

Sweet to me is 3bars on pump gas

If I want 360 + with a Possible Streetable 400 hp, on pump gas, while not exceeding the turbos's max @ 100% by 60% (ball park) ?? And the whole Idea of not going 04R or T78 is to spin up as close to as fast as the twins....

Am I asking too much of the 35R ??

And with good tuning what am I looking at for that mark ? 14 psi 17 ??
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Old Mar 18, 2004 | 08:12 PM
  #33  
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Just to start a vicious roumor
I have heard that there is a kit under development that will let you install the GT-35R With the stock Airpump in place to be able to smog the dammed thing an important destinction here in Ca.
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Old Mar 18, 2004 | 08:48 PM
  #34  
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Originally posted by Zero R
I have run my car on 93oct 16lbs just fine.
i've mentioned this in several threads before but....

i've run 20psi on pump gas with the stock S4 turbo and stock IC. don't need any feedback, i just wanted to add that.
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Old Mar 18, 2004 | 08:51 PM
  #35  
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I talk with people all day about how they want more HP. Even single turbo owners that wish they went with a bigger turbo. My philosophy is if you are a street car go big. If you dont you are going to wish for more HP.
I get people saying all the time they would be happy with just 400 HP. That wears off after 3 days and they are wanting more. Dont make the same mistake, it justs costs more money.

Dont let a big turbo scare you, lag is so overrated.

Jason
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Old Mar 18, 2004 | 08:59 PM
  #36  
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BOOOOOOOOOO!!!!
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Old Mar 18, 2004 | 09:37 PM
  #37  
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truth hurts
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Old Mar 18, 2004 | 09:58 PM
  #38  
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From: My 350Z Roadster kicks my RX7's butt
Well 400hp is = Z06, can use 1300's instead of fuel rail, FPR, etc, blah blah ....AHHHAA oh sorry, Zero-R scared me with his big turbo. (ok, lame reply on the joke). 500hp means dual fuel pumps, broken axles, too much money, not streetable, etc.

ok, back to my question which I think is the same as DCosby's:
This is the reason I am looking for the "most" efficient turbo with the sweet spot at 1bar and "not" over 17lbs.
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Old Mar 18, 2004 | 10:00 PM
  #39  
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From: My 350Z Roadster kicks my RX7's butt
Well 400hp is = Z06, can use 1300's instead of fuel rail, FPR, etc, blah blah ....AHHHAA oh sorry, Zero-R scared me with his big turbo. (ok, lame reply on the joke). 500hp means dual fuel pumps, broken axles, too much money, not streetable, etc.

ok, back to my question which I think is the same as DCosby's:
This is the reason I am looking for the "most" efficient turbo with the sweet spot at 1bar and "not" over 17lbs.
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Old Mar 18, 2004 | 10:08 PM
  #40  
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From: My 350Z Roadster kicks my RX7's butt
Well 400hp is = Z06, can use 1300's instead of fuel rail, FPR, etc, blah blah ....AHHHAA oh sorry, Zero-R scared me with his big turbo. (ok, lame reply on the joke). 500hp means dual fuel pumps, broken axles, too much money, not streetable, etc.

ok, back to my question which I think is the same as DCosby's:
This is the reason I am looking for the "most" efficient turbo with the sweet spot at 1bar and "not" over 17lbs.
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Old Mar 18, 2004 | 10:25 PM
  #41  
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Originally posted by DCrosby
Just to start a vicious roumor
I have heard that there is a kit under development that will let you install the GT-35R With the stock Airpump in place to be able to smog the dammed thing an important destinction here in Ca.

i was hoping that would happen soon. where did you hear tis "rumor"?
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Old Mar 18, 2004 | 11:14 PM
  #42  
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Originally posted by GoRacer
Well 400hp is = Z06, can use 1300's instead of fuel rail, FPR, etc, blah blah ....AHHHAA oh sorry, Zero-R scared me with his big turbo. (ok, lame reply on the joke). 500hp means dual fuel pumps, broken axles, too much money, not streetable, etc.

ok, back to my question which I think is the same as DCosby's:
Actually 340rwhp is around what a z06 produces
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Old Mar 19, 2004 | 12:00 AM
  #43  
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Just get a shop to give you a receipt that states you spent at least $450 on getting your car smog friendly and you get a waiver. I read that in some laws that I just looked up. I'm moving to Cali this fall. Just thought I would bring that up.

Zach
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Old Mar 19, 2004 | 12:29 AM
  #44  
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BostedRex, I think the spending limit only applies if you have an otherwise unmodified car. I don't think you can use it to avoid SMOG tests with a single turbo FD.

Also, any single turbo should fail the visual test in CA, even if you do keep the air pump. However, it might be easier to get your car to pass if you can still pass the sniffer and just need the SMOG tech to look the other way on the visual. It would be nice to keep a cat and air pump and avoid the stinky exhaust. Cops might go easier on you or not even know you're modded, too, in the event that you get pulled over and have to pop the hood. If you can pass the sniffer, you shouldn't get nabbed by any road-side sniffer teams, either (I've never seen one, and I am not sure if they actually bust you, but it seems like a possibility). The option to keep the air pump is a desireable feature, but it is not the key to passing SMOG in CA.

Most kits require removal of the EGR valve, too, which alone would cause you to fail the visual, and might cause you to fail the sniffer.

-Max
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Old Mar 19, 2004 | 11:17 AM
  #45  
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According to my source, all the smog stuff is kept, and yes Jason, I would love a periphreal port, large fuel rail, walbro, or dual fuel pumps, pressure regulator etc... and if I was back in Florida, I'd have that, what I wouldn't have is a check to spend. Florida is such a POS state for wages ....

I agree that no amount of HP is ever enough, and that the feeling of "Wee" goes away... but I'm trying to build something that's fun on the street, and that can take the occasional track event, and kick some S2000 or Corvette butt... and put a smile on my face.... but I also need some wiggle room to be able to stay within the bounds of the law....

From my experience it's much easier to get a smog tech to ignore what you have under the hood, since for most it's the only rotary they've seen in months, and likely the only FD they've seen period.... and much harder to ignore what's coming out of the tailpipe....

Who knows, I'll find out next year
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Old Mar 19, 2004 | 12:27 PM
  #46  
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When I had my 89 gtu smogged a few months back, the idle was crap and it still passed (barely). But anyways what I wanted to say was reading the smog sheet, the tech entered N/A in the box for egr valves on the visual inspection so he obviously didn't know what he was looking at.
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Old Mar 19, 2004 | 04:01 PM
  #47  
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So ZeroR,

Does the new manifold of 35/40 kit really let us keep and operate the air pump? I remember reading a while back that the turbo clear the air pump, but we have to do the pumping ourselves. Now, have you done any car w/ the air pump and your new kit?

POM HB
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Old Mar 19, 2004 | 06:03 PM
  #48  
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I'm happy with mine!
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Old Mar 19, 2004 | 06:25 PM
  #49  
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[QUOTE]Originally posted by the_glass_man
I'm happy with mine!

you definately couldnt fit a airpump with that manifold
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Old Mar 19, 2004 | 06:34 PM
  #50  
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[QUOTE]Originally posted by H2o
Originally posted by the_glass_man
I'm happy with mine!

you definately couldnt fit a airpump with that manifold
Who needs an airpump?
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