Sump Plate Cap Nuts

[Jim Wayman]

Anyone know if cap nuts were ever used by the factory on the 356 sump plates, instead of regular hex nuts? The parts books specify hex nuts, but many I have spoken to say that cap nuts were used for at least some period.

[Vic Skirmants]

Never that I am aware of in 56 years of experience.

[Jim Wayman]

Thanks, Vic.

I just looked at the website for the Roads Scholars 55 Continental coupe and it looks like they used them.

[Vic Skirmants]

You'll have to ask them if that is original for that year.

[Norm Miller]

Porsche never used them.
VW introduced them in 1966 I believe.

[Dick Weiss]

All 356 and 912 engines use the same sump plate hardware; Flat and spring washers, and 6 x 10mm hex nuts. NOT the closed-end cap nuts!