Decent Compression?

[Furgonzo]

Hello again,

Curious what sort of range I should be looking at for compression on a '89 1.7 diesel with about 2,000 km since a major overhaul. Upper 300's with a range no more than 70's (psi, 26ish bars?) sound reasonable to expect? What is the red zone (below which, DON'T BUY!).

Thanks.

[bigherb]

Compression should be 34 bar, minimum 26 bar, max difference between cylinders 5 bar.