oceanbeach510 Posted September 21, 2014 Report Share Posted September 21, 2014 So I am tearing into my motor redoing the timing chain and all that fun stuff and i noticed my cam is a U20 19 M ive googled all over the place and i cant find anything about the M spec does anyone know anything? Quote Link to comment
datzenmike Posted September 21, 2014 Report Share Posted September 21, 2014 L20B cam. Also as close to identical to the JDM L16SSS cam. The specs are .413" lift at valve and 248 duration on both. This is likely (I'm guessing) the actual duration and not the usual after market reading taken at a 0.050" lift. Intake opens at 16 degrees BTDC and exhaust closes at 14 degrees ATDC. You should be able to map the the other two events from this. Car and truck cams appear to be the same. Quote Link to comment
oceanbeach510 Posted September 21, 2014 Author Report Share Posted September 21, 2014 Sweet well it has some pitting on it so its going to the machine shop tomorrow! Quote Link to comment
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