oil pressure relief springs

[rlane]

I just noticed tonight that my 78SC has equal spring size for both of the oil pressure releif pistons. It also has no sleeve/guide on the one from the bottom of the case. I thought that the cases after 77 had the oil pressure modification and used the different springs as shown in Waynes book.
Should I just replace them with same springs?

[Carrera3.5L]

Originally posted by rlane
I just noticed tonight that my 78SC has equal spring size for both of the oil pressure releif pistons. It also has no sleeve/guide on the one from the bottom of the case. I thought that the cases after 77 had the oil pressure modification and used the different springs as shown in Waynes book.
Should I just replace them with same springs?

Another motor originally built on a Friday afternoon during Oktoberfest! When I tore down my 3.2L motor, I discovered that I was missing the guide for the long spring that mounts vertically in the case. Apparently this is not exactly groundbreaking or cause for alarm as quite a few engines seem to have been missing the guide.

Your 3.0L SC is the same as a 3.2L Carrera & 3.3L 930. The pressure relief pistons used for the horizontal and vertical assemblies are the same pieces, but you should have a shorter spring for the horizontal assembly.

I would replace with what it is supposed to have, as they are dirt cheap. Part numbers are as follows to make it easier:

911 107 512 00 Relief Piston(s)

901 107 531 00 Spring (short)

930 107 531 01 Spring (long)

930 107 533 00 Guide

Good luck!

Ralph

[rlane]

Thanks Ralph, BIG help having all the part numbers!
Will call Pelican today.

[bbh03]

Mine was missing the guide and equal springs too. Just replace witht he proper equipment.