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Turbochargers and related components Whats new, tech questions, what's your favorite and why... turbos, wastegates and boost controllers |
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#1
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Is anyone using the new GTK-850 turbo (72mm)? How does it compare to other turbos used?
How is the spool and driveability? Thanks Datar
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87 GN Stroked, Girdled, Solid roller cam, GTK-72BB S-trim .85A/R, GN1's, XFI-T/C box, Cottons FMIC, Razors dual nozzle alky, TA Headers, Len Freeman 200r4, PTC 9.5" N/L |
#2
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Check with Mike Nogradry. I believe that is the turbo he has. Don't know for sure if he has run it prior on his car, 'cause his car is under construction at the moment.
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'86 Gn with an RPE bullet. Almost everything else is from Cottons. 100% street car! |
#3
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Datar had pm'ed me already. I told him I hadn't run with it yet. I don't know of anyone else with that turbo. I am curious myself how it's going to be.
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87 GN, RPE built 109 stroked, RJC girdle, billet main caps, custom comp roller cam, Champion ported aluminum heads, Champion aluminum intake, T&D 1.65 rockers, 96 lb injectors, Accufab 70mm throttle body RJC pullies, RJC A/C bracket,GTK-850, ATR headers,Deeds electronic boost controller, Cotton’s 4 inch down pipe w/ Turbonetics RG 45 gate, XFI, Cotton’s front mount, Level 10 built 400 trans w/brake, Converter? ,33 spline Moser axles, Spool, HR bar. New best 9.44 @ 143! ![]() |
#4
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Jack mentioned a guy from ST. Louis is using one, hopefully he can post his expierence with it.
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87 GN Stroked, Girdled, Solid roller cam, GTK-72BB S-trim .85A/R, GN1's, XFI-T/C box, Cottons FMIC, Razors dual nozzle alky, TA Headers, Len Freeman 200r4, PTC 9.5" N/L |
#5
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I'm the guy in St Louis with the GT-K 850. This turbo is NASTY. I'm trying to chase down some gremlins in-between snow storms and ice storms
![]() Bryan
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Bryan 87 GN with 43k Stock block ![]() |
#6
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![]() Quote:
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87 GN, RPE built 109 stroked, RJC girdle, billet main caps, custom comp roller cam, Champion ported aluminum heads, Champion aluminum intake, T&D 1.65 rockers, 96 lb injectors, Accufab 70mm throttle body RJC pullies, RJC A/C bracket,GTK-850, ATR headers,Deeds electronic boost controller, Cotton’s 4 inch down pipe w/ Turbonetics RG 45 gate, XFI, Cotton’s front mount, Level 10 built 400 trans w/brake, Converter? ,33 spline Moser axles, Spool, HR bar. New best 9.44 @ 143! ![]() |
#7
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The GT-K turbos NORMALLY come with a 4 bolt exhaust housing, so there is no way to get a 1000 with a 850 cover with a standard 3 bolt GN housing. I got an S trim .85 AR. The GT-K 1000 uses an HP76 wheel while the GT-K 850 uses an HP72 wheel. The GT-K cover on the inlet is the same. The only way to get the 1000/850 combo is with a 4 bolt which will get you their new ceramic coated housing.
Bryan
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Bryan 87 GN with 43k Stock block ![]() |
#8
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Any news on how this turbo performs at the track?
Datar
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87 GN Stroked, Girdled, Solid roller cam, GTK-72BB S-trim .85A/R, GN1's, XFI-T/C box, Cottons FMIC, Razors dual nozzle alky, TA Headers, Len Freeman 200r4, PTC 9.5" N/L |
#9
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We're waiting for you to tell us how it performs......
![]() opps, sorry Lorrie, it's me again using Lorries computor... Jack
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Lorrie www.cottonsperformance.com Last edited by TurboBabe; 05-11-2008 at 12:05 PM. |
#10
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I now have a GTK-850! Have to give props to Jack for hooking me up with Turbonetics (Brian Cerny), customer service was great! I should have the car running with the new stroker combo in 2 weeks.
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87 GN Stroked, Girdled, Solid roller cam, GTK-72BB S-trim .85A/R, GN1's, XFI-T/C box, Cottons FMIC, Razors dual nozzle alky, TA Headers, Len Freeman 200r4, PTC 9.5" N/L |
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