ezzzzzzz Posted January 17, 2006 Share Posted January 17, 2006 I picked up an 82 280zxt (with 201300 miles on the OD) the other week. The F54/P90a engine supposedly had no compression on cylinder 5. Someone had pulled the valve cover, water pump, oil pump, etc. for reasons I'm not sure about. I pulled the engine yesterday and removed the head expecting to find a burnt valve, blown head gasket or damaged piston/rings. Nada...nothing wrong. There's lots of oil every where and the plugs were heavily fouled. The block has no ring ridge and crosschecking is still evident in the bores. One of the torque convertor bolts was lightly damaged. I'm convinced this is a relatively recent rebuild. All of that said, I am wondering if this is an overbore or ridge-reamed block. The pistons all have P90 stamped into them. Four of them are also stamped 23 (1,3,4,6) and two are marked 45 (2,5). Can someone possibly help identify what I have here? Quote Link to comment Share on other sites More sharing options...
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