By chance does anyone know, or know where I can find the specs for the piston ring gap for a our pistons? My block is bored .020 over.
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Stock specs as listed in the factory service manual:
No. 1 ring = 0.25 - 0.45 mm (.0098 - .0177 inches)
No. 2 ring = 0.35 - 0.50 mm (.0138 - .0197 inches)
oil ring rails = 0.20 - 0.70 mm (.0079 - .0276 inches)
No. 1 ring = 0.25 - 0.45 mm (.0098 - .0177 inches)
No. 2 ring = 0.35 - 0.50 mm (.0138 - .0197 inches)
oil ring rails = 0.20 - 0.70 mm (.0079 - .0276 inches)
oh really? cool that must be one of the pages that was ripped out of mine. will those values still be the same even though I am not at stock bore?
Essentially yes. They can vary by bore size but not from that little amount of change.
toybreaker
iconoclast
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- Apr 30, 2006
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Please, bear in mind you'll want to be towards the larger side of the tolerance range if you're going to be running a lot of boost, or nitrous.
oh ok thank you. hopefully I can have the motor together by the end of January
if you do file your own rings, just make sure you do a cylinder at time and keep the rings separated as to which cylinder they go with.
