antiseize, grease for rotors, clutch lever

Bukowski · 12-14-2012, 01:34 PM

I need to put antiseize on my rotors and MoS2 grease on my clutch lever. not sure what greases are good for this.

and is the antiseize supposed to be coated all over the inner surface of the rotor where it contacts the hub? should it be thick or thin?

they say Coastal Moly EP Grease is not good for disc brake rotors - I was hoping to use that for both. is a tube of the Permatex antiseize from the local autoshop adequate?

ref:
Warren Unilube

'87 944 na

89-944NA · 89-944NA's Garage

antiseize is used on the bolts and screws (use a small amount on the wheel studs too) to keep them from seizing in the hub. If you are going to use Coastal Grease, use the "Uniplex Premium Hi-Temp Grease" it's made for disc brake wheel bearings.

MoS2 grease is Molybdenum Disulfide grease, and you can get a 3oz packet of it at autozone for $1.99. Autozone part number is 03618....they sell it as CV Joint grease.

Bukowski · 12-15-2012, 06:38 AM

I saw Dr944S2 lather the inside of a rotor with grease in his brakes how-to video. What type of grease is that? How thick should it be?

I'll try to get a link, but google 944 S2 brakes video, should come up.

Bukowski · 10:37 AM

Here we go.

Porsche 944 S2 How to Replace Brakes. DIY - YouTube

he coats the hub as well as the springs with "high temperature ceramic grease". so is this going to be in the local autoshop?

962porsche · 12-15-2012, 08:41 AM

when it comes to using anti-seize most people will use the aluminum based anti-seize on parts that get hot . this is wrong ! you want to use a copper based anti-seize on any part that gots hot . the reason is that aluminum has a much lower melting point and will at times bond parts together were copper based will not because of it's much higher melting point .

89-944NA · 89-944NA's Garage

According to the Factory Service Manual, a thin coat of grease is applied to the centering surface of the rotor (the centering surface is the part of the rotor that contacts the hub). This helps prevent the rotor from sticking to the hub.

Bukowski · 12-15-2012, 10:20 AM

Quote:

Originally Posted by 962porsche

the reason is that aluminum has a much lower melting point and will at times bond parts together were copper based will not because of it's much higher melting point .

ahhh of course! that makes sense now!

Bukowski · 12-15-2012, 10:38 AM

is there a good reference or source to review and understand basics of greases and where the go (besides the SM)?

89-944NA · 89-944NA's Garage

Make sure that you clean off any grease that you possibly get on the rotor surface before you install the rotor.

Clark's Garage Home Page is a good reference for most of the work you will be doing...not a reference for grease, but for the mechanicals and step by step instructions.

Bukowski · 12-15-2012, 10:47 AM

Quote:

Originally Posted by 89-944NA

Make sure that you clean off any grease that you possibly get on the rotor surface before you install the rotor..

good call. going to look for a brass brush.

Clark's Garage Home Page ....[/QUOTE]

yes I love CG -also many other internet destinations - but clearly I am not getting this grease application.

one thing if i may, before I either start a new thread or retreat to the internets:

why not just use brake/caliper copper grease on everything in there? its copper, high temp,... will it work as an antiseize as well?

89-944NA · 89-944NA's Garage

Quote:

Originally Posted by Bukowski

good call. going to look for a brass brush.

Clark's Garage Home Page ....

yes I love CG -also many other internet destinations - but clearly I am not getting this grease application.

one thing if i may, before I either start a new thread or retreat to the internets:

why not just use brake/caliper copper grease on everything in there? its copper, high temp,... will it work as an antiseize as well?[/QUOTE]

It may/may not work, I have always tended to default to the SM if I am unsure...Porsche used certain greases/compounds in different areas for a reason...simple reasoning would tell me that anti-seize is formulated differently than grease.

Depending on the application, I use 3 different types of anti-seize, aluminum, copper and silver. All 3 have different melting points, resistance to moisture, etc. For the rotor screws and caliper bolts, use the copper.

As for the grease application on the rotor, to make it easy to understand, remove the rotor and look at the hub. Apply a thin coat of grease to the face of the hub, then install the rotor. The grease is used as a barrier to keep moisture from getting between the hub and rotor and making them hard to seperate.

One last thing, make sure you wear a mask to keep from inhaling the brake dust and crud that you remove with that brush.

Bukowski · 12-15-2012, 12:32 PM

89-944NA thanks for the comments

Quote:

Originally Posted by 89-944NA

Depending on the application, I use 3 different types of anti-seize, aluminum, copper and silver. All 3 have different melting points, resistance to moisture, etc. For the rotor screws and caliper bolts, use the copper.

taking a look here at MP's:

aluminum 1221degF | 660.3degC
silver 1763degF | 961.8degC
copper 1984degF | 1085.0degC
MoS2 2165degF | 1185.0degC

... I suppose this means that MoS2 greases do not apply to brakes because of some property other than MP, or the formulation for brakes is not favorable for suspension of MoS2.