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Cobalt SS Network
Engine Technical Discussion
2.2L LAP Performance Tech
2.2 take advantage of valve springs?
2.2L LAP Performance Tech
2.2L LAP Performance Tech (2009+) 155 hp EcoTec with 150 lb-ft of torque
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2.2 take advantage of valve springs?
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01-20-2012, 07:57 PM
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nhanson
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2.2 take advantage of valve springs?
Can we install valve springs and spin to 7500?
I also read that 7k is safe for stock valve train
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01-20-2012, 09:26 PM
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cleanxfe
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i run mine to 7200 power band is gone after that
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01-21-2012, 10:49 AM
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jbenso4
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i run to 7k with the boost on stock valvetrain.
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01-21-2012, 10:54 AM
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Yup after that would want to upgrade to the Super Tech Valve springs, 78 # or 94# (New)
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01-21-2012, 10:55 AM
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well the s/c will go on before valve springs
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01-21-2012, 10:55 AM
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Tundraboarder666
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The L61 won't support more than 13 PSI on stock valve springs. Nor should you be going over 7400 with stock valve springs.
Just get the 78lbers
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01-21-2012, 12:19 PM
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nhanson
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7500 is ok with valve springs right...and anything over that would need springs and balance shafts? (i wouldnt go this far)
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01-21-2012, 02:02 PM
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cleanxfe
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yes
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01-21-2012, 02:05 PM
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Quote:
Originally Posted by
Tundraboarder666
The L61 won't support more than 13 PSI on stock valve springs. Nor should you be going over 7400 with stock valve springs.
Just get the 78lbers
im running 12-13lbs on my stock valve train, is that a problem?
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01-21-2012, 02:11 PM
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kxrida2000
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no point in really going over 7k without cams
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01-21-2012, 02:53 PM
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Vvt
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01-21-2012, 02:55 PM
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GSDIESEL300
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Quote:
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drumrush
im running 12-13lbs on my stock valve train, is that a problem?
I doubt it, I'm spiking 16 and holding 15 with my 2.9 set up. No problems at all here. I'm auto as well. (knock on wood)
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01-21-2012, 02:59 PM
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I doubt it, I'm spiking 16 and holding 15 with my 2.9 set up. No problems at all here. I'm auto as well. (knock on wood)
Hows the auto holding? What RPM are your shifts at?
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01-21-2012, 03:04 PM
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GSDIESEL300
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Hows the auto holding? What RPM are your shifts at?
Perfect, I have my shift points set to 6800 RPM.
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01-21-2012, 05:19 PM
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Quote:
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im running 12-13lbs on my stock valve train, is that a problem?
he's talking turbo
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01-21-2012, 08:35 PM
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Quote:
Originally Posted by
drumrush
im running 12-13lbs on my stock valve train, is that a problem?
Not until you start misfiring, not enough CFM's
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01-21-2012, 09:07 PM
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Quote:
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kxrida2000
he's talking turbo
That makes more sense then haha
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