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914World.com _ 914World Garage _ Type IV engine case preparation

Posted by: Driver174 Nov 12 2022, 01:33 PM

I have the desirable W case and want to prepare it for a future build. Is there a procedure or instructions written somewhere explaining how to prepare a case assembly?

I wouldn’t mind purchasing this information; maybe Mr. Raby offered something in the past?

Thanks,
Jim

Posted by: 914Sixer Nov 12 2022, 03:07 PM

Check line bore. Pull head studs and have case decked on barrel spigots. Visually check crankshaft and camshaft saddles for damage or out of round.

Posted by: Driver174 Nov 12 2022, 04:15 PM

The oil passages get tapped and plugged, or welded shut. Oil pressure regulator valve assembly needs modified I believe. The rear main seal needs a pressure relief passage. Case needs clearances for Cr moly rods. Epoxy or some king of coating for interior and exterior of case.

I’m hopping to find a complete list processes to perform.

Posted by: barefoot Nov 13 2022, 11:01 AM

Using new main bearing inserts, see if they're a tight fit into the brg saddles, if loose at all, the case needs line boring to 1st O/S

Posted by: 930cabman Nov 13 2022, 12:30 PM

Other than being clean and straight/flat and within spec, build her up