The TRW's are L-2482F30. They are just a flat topped pistons with 4 valve reliefs. I'm not sure what the volume of the valve reliefs are, so i'm not exactly sure what the compression ratio is. I guess I could figure it out if I really wanted to. Summit Racing's website says that they should be 9.5:1 with 60cc heads, but I would imagine it's a bit higher. Isn't the stock compression 9.5:1 with a slight dish in the stock pistons. Anyway, that's what they are.
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Michael Black
QuantumMotorsports
Norman, OK
1984 LX Hatch
306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat.
Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites
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