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 Ect

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Old 06-12-2009, 05:09 PM   eBay Motors  #1 (permalink)
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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
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Old 06-12-2009, 05:10 PM   eBay Motors  #2 (permalink)
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compressor wheel is 60.5/82mm, turbine size is 68mm/62mm
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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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Old 06-12-2009, 05:31 PM   eBay Motors  #3 (permalink)
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ding ding ding
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Old 06-12-2009, 05:32 PM   eBay Motors  #4 (permalink)
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ding ding ding
thanks i got one sitting right here, haha
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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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Old 06-12-2009, 05:33 PM   eBay Motors  #5 (permalink)
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wow i didnt think it was that small.
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Old 06-12-2009, 05:34 PM   eBay Motors  #6 (permalink)
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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
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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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Old 06-12-2009, 05:41 PM   eBay Motors  #7 (permalink)
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thanks i got one sitting right here, haha

Me too.
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Old 06-12-2009, 05:44 PM   eBay Motors  #8 (permalink)
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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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Old 06-12-2009, 05:47 PM   eBay Motors  #9 (permalink)
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the size dont necessitate studs boost psi do.
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Old 06-12-2009, 05:52 PM   eBay Motors  #10 (permalink)
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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
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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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