Toyota Celica GT-Four ST205 UK Spec: 3" H&S Downpipe and front pipe, Blitz NUR Spec R 70mm centre and back system, Motec M4 Pro ECU, AIM Digital Display, Blitz air filter, ERL Aquamist Water Injection, output circa 330bhp @ 1.5bar.
The car had been used for track days since I bought it in 1997 so for it to last ten years in various states of tune wasn't too bad. The shell and transmission now have a second life in my track toy project which has been well documented in my Track Weapon build thread. The blown engine has been used for mock-up purposes during the build but now that this is virtually complete I finally got the opportunity to pull it apart and see what had failed during the track day.
The engine failure occured at the Bruntingthorpe Prolex Toyota Day in 2007. Water Injection airlocked and within half a lap the engine lost its edge and the car slowed. Came straight into the pits with the engine sounding like it was firing on three cylinders. Didn't seem too bad so drove out to the village for the flat bed to pick me up. Probably a bad move as most of the oil in the sump ended up being pumped into the turbo and intercooler.
Cylinders 1 and 4 display signs of foreign object damage to the piston crowns
Cylinder 1
Piston 1
Cylinder 2
Cylinder 4
Broken spark plug electrode and ceramic insulator visible. I suspect the ceramic has caused most of the damage
Cylinder block No 1 bore appears to have aluminium smearing
The crankshaft journals also show signs of scuffing but it should be salvageable. The shells on the No 1 big end are worn down to the backing plate.
