Stock Turbo Size? - Chevy and GMC Duramax Diesel Forum

01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 13 (permalink) Old 06-12-2009, 05:09 PM Thread Starter
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Stock Turbo Size?

Can Someone help me out.. I am curious of the diameter of my compressor wheel's inducer on my stock lb7 turbo? Also the size of the exhaust housing?

thanks

2003 Silverado 2500HD EC, 4x4, White, SunCoast stage V, CNC ported heads stage 2 with titanium retainers,mpi twin turbo set up pushing 70psi, 90HP injector nossels, ARP head studs, SoCal camshaft, Dual CP3 kit, Crower Rods, 200GPH Airdog lift pump, Custom Intake, EFI Live, 5" straight pipe
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post #2 of 13 (permalink) Old 06-12-2009, 05:10 PM
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compressor wheel is 60.5/82mm, turbine size is 68mm/62mm

03 EC/LB LB7: EFI LIVE, S&B intake, 5" DE, ATS manifolds and up pipes, Stock turbo (for 1 more weeks), airdog 150, pieced together trans, sleeve (trac bars and centerlink soon), 8" rear air bags-overload springs+2" blocks, bilstein 5100 shocks, leveled, nitto 285/75/17's and BFG KM2 255/85/16's for winter.
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post #3 of 13 (permalink) Old 06-12-2009, 05:31 PM
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ding ding ding
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post #4 of 13 (permalink) Old 06-12-2009, 05:32 PM
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Quote:
Originally Posted by Hondarider552 View Post
ding ding ding
thanks i got one sitting right here, haha

03 EC/LB LB7: EFI LIVE, S&B intake, 5" DE, ATS manifolds and up pipes, Stock turbo (for 1 more weeks), airdog 150, pieced together trans, sleeve (trac bars and centerlink soon), 8" rear air bags-overload springs+2" blocks, bilstein 5100 shocks, leveled, nitto 285/75/17's and BFG KM2 255/85/16's for winter.
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post #5 of 13 (permalink) Old 06-12-2009, 05:33 PM
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wow i didnt think it was that small.

built motor, big turbos, built trans, etc all by me, parts from Elite Diesel

1016 hp

7.1 1/8 @ 100

11.27 @ 105
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post #6 of 13 (permalink) Old 06-12-2009, 05:34 PM
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wow i didnt think it was that small.
yes its smaller then the VVT's. the turbine housing on the IHI is better though, its a T4 instead of the T3 on the VVT's

03 EC/LB LB7: EFI LIVE, S&B intake, 5" DE, ATS manifolds and up pipes, Stock turbo (for 1 more weeks), airdog 150, pieced together trans, sleeve (trac bars and centerlink soon), 8" rear air bags-overload springs+2" blocks, bilstein 5100 shocks, leveled, nitto 285/75/17's and BFG KM2 255/85/16's for winter.
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post #7 of 13 (permalink) Old 06-12-2009, 05:41 PM
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thanks i got one sitting right here, haha

Me too.
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post #8 of 13 (permalink) Old 06-12-2009, 05:44 PM
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I think I will go to a 64mm then not much bigger but not too big to worry about head studs and all well I might as well do head studs since I'll be right in that area.

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post #9 of 13 (permalink) Old 06-12-2009, 05:47 PM
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the size dont necessitate studs boost psi do.

built motor, big turbos, built trans, etc all by me, parts from Elite Diesel

1016 hp

7.1 1/8 @ 100

11.27 @ 105
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post #10 of 13 (permalink) Old 06-12-2009, 05:52 PM
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Quote:
Originally Posted by delong_1 View Post
the size dont necessitate studs boost psi do.
yep like the LB7 turbos im working one. might now make the 50 PSI like a AK4 will but will flow a ton of air at lower PSI making it nicer on the engine. they will make 40 PSI easy though

03 EC/LB LB7: EFI LIVE, S&B intake, 5" DE, ATS manifolds and up pipes, Stock turbo (for 1 more weeks), airdog 150, pieced together trans, sleeve (trac bars and centerlink soon), 8" rear air bags-overload springs+2" blocks, bilstein 5100 shocks, leveled, nitto 285/75/17's and BFG KM2 255/85/16's for winter.
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