MBMB

In PET, some screws are described as "Z1", as in "M 8 X 35 Z1". What does Z1 mean?

SharkSkin

Zat is Z1 fur dat location...

MBMB

Zanks for ze help.

Anyone else?

jon928se

Sure it isn't Zi for Zinc

Charley B

Iv you Z 1, buy it.

MBMB

PET says zee one, not Zi or even ZI. See :
Illustration 104-00 part 56 (screws that hold oil filler neck to block),
Illustration 105-00 part 12 (screw that holds timing belt pully support to water pump),
Illustration 105-05 part 12 (bolt that attaches water regulator housing to ?block?),
Illustration 105-05 part 24 (screws that attach thermostat cover to regulator housing), and
Illustration 107-05 part 33 (screws that attach throttle cable pulley bracket to block).

Jim bailey - 928 International

term is yused on other cars BMW etc but often appears as Z1 ZNS ....ZNS I believe is Zinc and most uses of this type bolt seem to be into coolant water so my guess is zinc plating for corrosion resistance...

Rob Edwards

I'm matching up hardware and notice this Z1 thing. For fun I looked up the T-stat housing bolts, M6 x 25 Z1. $9.55 each. Porsche clearly thinks highly of their zinc plated hardware.....

EDIT: McMaster has them for slightly less: http://www.mcmaster.com/#91280a334/=5illv3

Glenn M

Go to Fastenal, I those and the 105mm bolts on SS. 105 was $1.15 in SS.

Glenn