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911 2.7 oil pump and pressure valves mixup help
Hello,
I'm building 2.7 CIS engine and run into a problem.
I ordered all the parts for oil pressure upgrade including oil pump with screen, oil restrictors in head housings, hydraulic tensioner set etc.
Problem is with oil pressure valves. At first I ordered all parts for factory bypassed engine case from 76, after parts arrived I had to switch to 75 case without bypass mod, which I forgot, and now I have half assembled engine.
The question is: which pressure pistons and springs should I use with this combo (no bypass case with newer pump and restrictors)?
Thanks for any help.
Peter
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