Lets see bearing clearance specs & oil pressure!
09-23-2007, 08:01 PM
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Lets see bearing clearance specs & oil pressure! Just wondering if anyone knows what their engine bearings clearance specs are and what kind of oil pressure they see at idle cold and hot and full throttle. I have a new boost engine that is showing different pressures than my stock bottom end setup.
Alex
Alex
09-23-2007, 10:06 PM
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I'm part of the way to building a stroker engine. I know my clearances are right at .0025" for the rods and mains, but I don't know my oil pressure yet as I've not assembled the engine yet.
What are your new bearing clearances and oil pressures?
Steve
What are your new bearing clearances and oil pressures?
Steve
09-23-2007, 10:22 PM
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09-24-2007, 11:11 AM
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09-24-2007, 10:50 PM
#8
are you using the stock gauge or a secondary gauge?
i have the loosest ls1 ever built and with the stock oil pump i had more that that.
if you are going by the stock gauge try using a regular gauge tapped into the system.
if you are running a big cooler or are feeding your blower/turbo use a HV/HP oil pump.
i have the loosest ls1 ever built and with the stock oil pump i had more that that.
if you are going by the stock gauge try using a regular gauge tapped into the system.
if you are running a big cooler or are feeding your blower/turbo use a HV/HP oil pump.
09-25-2007, 05:57 PM
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Originally Posted by SPRAYED 01
Okay the main bearing specs are from .0024-.003. Is that loose enough for my oil pressure being 25-30 hot idle, and 45-50psi full throttle.
Having 25 to 30 hot at idle, is good I don't think you have anything to worry about.
Harold
09-25-2007, 09:11 PM
#10
I'm at .0017-8 on the mains and .0022 on the rods. Warm oil pressure is 47 idle and around 70psi at redline. During normal driving it's in the 55 to 60psi range. Thats with new cam bearings, Mobil 0W40 and a ported ls6 oil pump with a shim on the spring.
09-26-2007, 12:47 PM
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Originally Posted by SPRAYED 01
Okay the main bearing specs are from .0024-.003. Is that loose enough for my oil pressure being 25-30 hot idle, and 45-50psi full throttle.
