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Thread: Kia Stinger Big Turbo Thread
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    Kia Stinger Big Turbo Thread

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    I wonder how the factory turbo's are sized. Would they be similar to a supra RZ twin turbo arrangement where theres a small and larger turbo's working together?

    I've had a couple of Subaru WRX STI's with single turbo's and i'm not feeling any progression from the low to high end (unlike the old supra) which is really nice, no lumpiness and just pulls once the boost arrives.

    I can feel a redline acceleration coming soon I've almost done run in.

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    Quote Originally Posted by BonzaiMark View Post
    I wonder how the factory turbo's are sized. Would they be similar to a supra RZ twin turbo arrangement where theres a small and larger turbo's working together?

    I've had a couple of Subaru WRX STI's with single turbo's and i'm not feeling any progression from the low to high end (unlike the old supra) which is really nice, no lumpiness and just pulls once the boost arrives.

    I can feel a redline acceleration coming soon I've almost done run in.
    I remember reading that both turbos are the same size. Would love to see more tuners producing big turbo kit options in the future.

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    2 turbo's. The same size. 1 on each bank. I think I read somewhere that they are small but I couldn't tell you more than that.

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    The Stinger uses Rockwell twin spool turbos in the GT's. There are two inlets to the turbo, one from each of two of the 3 cylinders on each bank. (The 3rd cylinder is vented directly into the exhaust.) Twin spool turbine inlet wheels are "stepped" or graduated in diameter and each cylinder is sent to one of the two different diameter locations. This way there is a more uniform boost - a quicker boost from one and a stronger boost from the other once the wheel speed is increasing. The turbines are small which decreases mass and increases response time.
    '18 Kia Stinger GT2 AWD 19" HiChroma Red / Black Nappa
    '08 Pontiac G8 GT 6.0L LS96
    '05 Pontiac GTO 6.0L LS2 6-speed Bright Blue metallic / Blue leather
    '00 Pontiac GrandPrix GTP 3.8L (supercharged)
    '96 Pontiac TransAm 5.7L
    '93 Pontiac GrandAm Quad4 HO
    '89 Olds Calais International Quad4 HO
    Anything before that you don't want to know

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    Quote Originally Posted by mldavis2 View Post
    The Stinger uses Rockwell twin spool turbos in the GT's. There are two inlets to the turbo...
    Thank you that sounds awesome, modern turbos have come along way! Whats the PSI / bar that they run I'll try and watch the small gauge in the dash.

    My old sti turbo with downpipe and exhaust would peak to 1.4 bar until the waistgate took it down a little, that was a different peeky 2L engine and wouldnt want to go back. Must be my old age LOL

    Sent from my SM-N920W8 using Tapatalk

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    I haven't really had time to drive the 3.3T because my car doesn't get here for 2 more weeks, but from a short test drive and from performance data from respected reviewers, it obvious that this engine has a lot of torque at lower RPMs and the computer seems to do a very good job of keeping the car within the torque band and not the horsepower band, which is why it is so much faster than it's specs suggest. And I'm thinking that the specs might be a bit conservative as well as most reviewers who have the ability to actually measure 0-60 times are getting a tenth or three better than 4.7 sec.

    Compare the Stinger with the Lexus RC500 which I've done elsewhere. Granted the LC500 is about 350 lbs. heavier. It advertises 471HP and 398 lb./ft. torque with a 0-60 (C&D) of 4.5 sec. The Stinger advertises 365HP and 376 lb./ft. of torque (only 22 lbs. less) and a C&D 0-60 of 4.4 sec. So the big horsepower numbers might sell a $105,000 car to brand snobs, but performance is essentially identical at half the price. (You can find those specs on the Car & Driver web pages)
    '18 Kia Stinger GT2 AWD 19" HiChroma Red / Black Nappa
    '08 Pontiac G8 GT 6.0L LS96
    '05 Pontiac GTO 6.0L LS2 6-speed Bright Blue metallic / Blue leather
    '00 Pontiac GrandPrix GTP 3.8L (supercharged)
    '96 Pontiac TransAm 5.7L
    '93 Pontiac GrandAm Quad4 HO
    '89 Olds Calais International Quad4 HO
    Anything before that you don't want to know

 

 
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