Cylinder Compression

[Zrush]

Does anyone out there have an idea what the cylinder compression on a bone stock 1972 240Z would be. The engine is now broken in with just a little over 3000 miles on it.

This yellow rocket is one of those "Factory Restored" Z cars.

[Bambikiller240]

Originally posted by zrush

Does anyone out there have an idea what the cylinder compression on a bone stock 1972 240Z would be. The engine is now broken in with just a little over 3000 miles on it.

This yellow rocket is one of those "Factory Restored" Z cars.

My 1972 Factory Service Manual listed 170 PSI as the compression reading for a new L24 engine

[Zrush]

The '77 280Z has been tested at 215 PSI. Needless to say this car is far from stock. The engine has about 1500 miles on it so I really don't think it's ready for the dyno yet.

Can't wait to find out the results when the "ZRush" is dyno'ed.

Thanks for the info on the '72

[SteveK]

Just put in a rebuilt bottom end (and unskimmed Samuri head) in my 240 and all pots give 170 PSI, plugs out and throttle open with no noticable variation between them which backs up BambiKiller240's service manual nicely.