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

508hp/365ft-lbs@18psi, 67mm gtx4294

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Old 09-17-12, 10:15 PM
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Nice! Im also not going with the 475 anymore so this may be a option to look at!
Old 09-18-12, 11:43 AM
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I would definitely recommend this turbo. ;-)
Talk to Sean @ Aspec tuning. He had this unit sold and shipped to me in about 4-5 days.
Old 09-18-12, 01:32 PM
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What is the spool time looking like on this turbo? Road race capable?
Old 09-18-12, 02:38 PM
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Originally Posted by Islander
I would definitely recommend this turbo. ;-)
Talk to Sean @ Aspec tuning. He had this unit sold and shipped to me in about 4-5 days.

I currently run a gt4094r so similar to the gtx4294r. Quality is great and the chra exchange Garrett offers is great. Toss a seal thru it and pay $500 for a new center section is awesome. But curious why a past s475 owner went this route rathe than s400sx route?
Old 09-18-12, 03:32 PM
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Good Numbers there. Very realistic too. Not like the rest. At least you know who ever is tuning for you is giving you fairly real dyno numbers there.

135mph+ on the power level you have now in the quarter mile.
Old 09-20-12, 01:27 PM
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^^^ nice to know rx72c.

And sk8world, I was gonna go with the 400sx, but really wanted a ball bearing and a billet turbo. The price is about $1000 more for that luxury. But so far for me its worth it. Next step is beef up the rear end and go racing. ;-)
Old 09-21-12, 06:07 PM
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hey islander just to let you know i have a gt42 with an upgraded 80mm wheel on the turbo and i made 627 @ 28lbs..... and the funny part was that was with a boost leak lol..... so ya your in a deal of much more power...


P>S with the boost leak fixed we did 557 @ 15lbs

until you hit more than 28lbs the turbo is not at its full poential
Old 09-22-12, 06:53 PM
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Originally Posted by darkphantom
hey islander just to let you know i have a gt42 with an upgraded 80mm wheel on the turbo and i made 627 @ 28lbs..... and the funny part was that was with a boost leak lol..... so ya your in a deal of much more power...


P>S with the boost leak fixed we did 557 @ 15lbs

until you hit more than 28lbs the turbo is not at its full poential
Good to know. Now help me put a automatic in my car like yours. Ahahahaha. Your car is an absolute beast.
Old 09-26-12, 09:00 AM
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/\ t56 tranny actually not automatic..... & make some run videos with a couple of cars.
Old 09-26-12, 11:36 AM
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How you like the t56? @ darkphanptom
Old 09-26-12, 11:55 AM
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/\ the fact that i dont have to spend money every month on trannies... & easy to powershift with it... I got the one from the GTO
Old 09-26-12, 12:10 PM
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Originally Posted by darkphantom
hey islander just to let you know i have a gt42 with an upgraded 80mm wheel on the turbo and i made 627 @ 28lbs..... and the funny part was that was with a boost leak lol..... so ya your in a deal of much more power...


P>S with the boost leak fixed we did 557 @ 15lbs

until you hit more than 28lbs the turbo is not at its full poential
Damn dude thats alot of power for such a big turbo at low boost. what is your peak tq timing at with the E fuel? Just curious cuz im debating on switching to E
Old 09-26-12, 03:19 PM
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jeez those are good numbers
Old 09-26-12, 07:13 PM
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Originally Posted by Islander
What's up fellas, just posting my dyno numbers from last night. I ordered a Garrett gtx4294 67mm version which was recommend by Sean at A-Spec tuning. .
Excuse my ignorance, but does the 67mm refer to the turbine wheel or is it the compressor inducer?
Old 09-27-12, 12:07 AM
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Originally Posted by jetlude
Excuse my ignorance, but does the 67mm refer to the turbine wheel or is it the compressor inducer?
Compressor inducer
Old 09-27-12, 02:47 PM
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Originally Posted by silverfdturbo6port
Damn dude thats alot of power for such a big turbo at low boost. what is your peak tq timing at with the E fuel? Just curious cuz im debating on switching to E

time machines tuned the car... im not really sure but i know the funny part is that it was at a conservative level (lower than 11.0) which is because i daily drive my car everywhere (thus the T56 tranny)
Old 09-27-12, 02:56 PM
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Originally Posted by darkphantom
time machines tuned the car... im not really sure but i know the funny part is that it was at a conservative level (lower than 11.0) which is because i daily drive my car everywhere (thus the T56 tranny)
what all is done to your engine?
Old 09-27-12, 03:17 PM
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agressive street port, microtech, 4x1600cc injectors, 3.5in exhaust, 2 step, & not to forget me & islander have the same turbo except i upgraded the wheel to an 80mm (standard gt42 wheel=72mm) from tial & it has a 1.00 hotside


& also Islander didnt put what type of port he has as well?

edit & its 19lbs not 17
Old 09-28-12, 09:02 PM
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ROFL 557@15psi. Go see what is wrong with that Dyno. Not possible on a 13b.
Old 09-28-12, 09:48 PM
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He edit to 19 psi, I've seen 672 @ 28 also wich is close to his Sig.
Old 09-29-12, 12:37 PM
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Originally Posted by 864angel112
He edit to 19 psi, I've seen 672 @ 28 also wich is close to his Sig.
/\ thanks angel & i did correct it
Old 10-02-12, 08:01 PM
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I would say close to 20-21psi for that power level. Things dramatically change once your over 23-25psi. Look what ever makes you happy.
But Dyno figures annoy the hell out of me these days. Everybody wants a million killowats.
Old 10-02-12, 08:39 PM
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Originally Posted by rx72c
Things dramatically change once your over 23-25psi.
Please explain....Do you mean the power will rise more exponentally?
Old 10-02-12, 08:59 PM
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yes the rate of rise changes a fair bit.
Old 10-02-12, 09:47 PM
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Originally Posted by darkphantom
agressive street port, microtech, 4x1600cc injectors, 3.5in exhaust, 2 step, & not to forget me & islander have the same turbo except i upgraded the wheel to an 80mm (standard gt42 wheel=72mm) from tial & it has a 1.00 hotside


& also Islander didnt put what type of port he has as well?

edit & its 19lbs not 17
15 psi 557 ? right!! ok. ive seen you been to some nice dynometers


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