TwinTurbo.NET: Nissan 300ZX forum - Bore clearance question?
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Subject Bore clearance question?
     
Posted by tt_703 on January 11, 2013 at 12:13 PM
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Message Long story short , the first engine build by a local shop fail due to excessive oil consumption . I will start pulling the motor out tomorrow , have another shop machine the block using torque plate . This time I will assemble the block myself so I need to everything right. I will be using wiseco pistons and rings 87.5mm (0.020 O.S). The goal is to make about 500-550 hp, max 20 psi of boost, After doing some research , here is the finding regard clearance and rings end gap . Please let me know what you all think?
Piston-bore clearance 0.003"
Top ring 0.021"
Second ring 0.022"

     
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