Blown 7MGTE Rebuild with Oil System Upgrade - Scored Cylinders and Damaged Pistons

Engineadvanced✓ OP Confirmed

Problem

1987 Supra Turbo had a blown 7MGTE engine with 2 damaged/chipped pistons and 4 scored cylinder walls. The previous owner had punctured the intercooler while driving and continued to drive the car home, causing severe internal engine damage.

Engine would not run (blown engine)2 pistons visibly damaged and chipped4 cylinder walls badly scored/scorchedLow compression in at least one cylinder

Root Cause

Previous owner hit something that punctured the intercooler and continued driving the car home, causing catastrophic piston and cylinder wall damage from loss of charge air cooling and likely lean/detonation conditions.

Confidence

Moderate confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted September 2017 on SupraForums.com