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86.5mm in evo 8 4g63

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Old Nov 25, 2016 | 05:30 AM
  #1  
manu_le_ouf's Avatar
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From: france
86.5mm in evo 8 4g63

Hi , can i put 86.5mm pistons on my 4g63? some customers said 86mm max and other 87mm....

my futursetup:
gsc r2
gtx3076r
max 30psi
manley 100mm
manley turbo tuff 150mm
wiseco hd

thank's
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Old Nov 25, 2016 | 02:16 PM
  #2  
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.040 over is the max you want to bore the 4g63, that means a final size of 86mm is the biggest you want to go. That larger bore pistons are for the 4g64.
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Old Nov 25, 2016 | 02:24 PM
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manu_le_ouf's Avatar
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Ok , but wiseco sell piston for 4g63 max 87,5mm
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Old Nov 26, 2016 | 10:28 PM
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you'll be fine with 86.5mm on a 4g63 block.
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