Don't worry yet. It's not necessary to replace engine. Probably, change of piston rings will help. If the cylinder is bad, you'll need to bore engine block and replace pistons+rings on o/s 0,5mm
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ex '87 MA70 7M-GTE, A/T, targa, rhd
ex '87 GA70 1G-GTE, M/T, targa,rhd
now '90 JZA70, 1JZ-GTE(swap), M/T, targa, lhd
18 inch PIAA Rozza wheels, HKS blow-off, Apexi turbotimer, XTD stage 3 racing clutch, AEM air filter, JZA80 fuel pump, 4-piston Skyline GT-R front brakes, Blitz boost-controller, high performance exhoust system
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