Toga

Leland, here is the ref from Porsche for the grease: 000 043 024 00 "Hoechstdruckfett" which means heavy duty grease.
About the guide tube, sorry I don't remember if it's lubed! I think not. but please get confirmation for that.

JasonAndreas

It depends on where you bought your release bearing from. The genuine Porsche OE release bearing has a polyamide insert that comes in contact with the guide tube. The regular aftermarket OEM Sachs release bearing does not. So with the OEM release bearing you have metal to metal contact and eventually because of all the corrosion, etc. the release bearing will stick to the guide tube. With the OE release bearing you don't grease the guide tube, with the OEM version you do. The OE guide sleeve is also smaller than the OEM guide sleeve because of the plastic insert (by about 2mm). I will see about posting some photos to better explain.

Leland Pate

Please do, Jason.
I purchased the kit from Steve Weiner. I'm at work so I don't have parts in hand, but I don't recall any plastic on the TO bearing or the guide tube. So, I guess it'd make sense to lube the parts that may come into contact with each other.

JasonAndreas

In the first image below (OE) the red arrow is pointing to the polyamide (slitted) insert. The inside diameter of the OE release bearing is 32mm, the matching guide tube should have an outside diamer of 31.8mm (there is no plastic around the guide tube only on the release bearing). The inside diameter of an OEM Sachs release bearing (second image) will measure 34mm and the matching guide tube should be 33.8mm.





Now I'm curious to find out just how much of the LWF idle chatter is caused by a mismatched (undersized by 2mm) guide tube and release bearing. I haven't been able to find an OEM aftermarket guide tube supplier only OE so they might all be 31.8mm?

Leland,
Look for a P symbol surrounded by a triangle on the release bearing. The LWF release bearing I have is OEM (no plastic) and the DMF release bearing I have is OE (with plastic insert). What we need to find is an OE LWF release bearing and check if it has a plastic insert. If it does than we both need to get one. The materials (and the spacing) used are the same so the corrosion/welding/seizing problem would happen no matter what so I can't understand why Porsche would have switched to using the polyamide insert after March 30, 1993 but only for the DMF (as I've been told) and not the LWF. This wouldn't be the first time that the OEM part didn't match the OE version.

Leland Pate

Jason,
I went out and looked at my release bearing and guide tube and am positive I have the right setup. There is about .2mm worth of play between the two. I never doubted I had the right parts because Mr. Weiner just wouldn't send mis-matched parts.
The Sachs LWF release bearing is identical to the one in the second picture. No Polyamide bushing. This is why one must ensure they get the RS guide shaft with their kit.
I am just wondering if it is required to be lubed with Olista Longtime. It must because there is no Polyamide insert to lubricate the surfaces.
This is just another good reason why people need to purchase a kit from a reputable source. having 2mm worth of play in there cannot be a good thing.
Also, from what I've been told, the RS LWF doesn't actually create more noise than the DMF, but rather the DMF dampens the gear lash noise that is always present. The 12 lb. wheel just transmits the noise created by the gears more.
Thanks so much for the assistance.

JasonAndreas

My explanation might have be a little confusing. The RS guide tube is longer than the DMF guide tube. The size differences I was talking about relate to OE versus OEM, not RS to DMF. I will hopefully have a photo of a genuine OE RS release bearing tomorrow that will answer the question.

If there is metal-to-metal contact than you definitely need to lube the guide tube or else you'll end up with the same problem most 964s had prior to March 30, 1993 (seized release bearing).

Just curious, what is the part number of your pressure plate?

Leland Pate

I think I see what you are saying, jason. So, I can have an RS guide tube. But I need to know if it is a OE guide tube or an OEM guide tube.
Unfortunately, i threw away the box and there is no p/n stamped on the guide tube.

I can only assume S.W. sent me the OEM guide tube to go with the OEM Sachs release bearing.

Here are some pictures:

Leland Pate

And a gratuitus shot of some of the goodies...

JasonAndreas

I compared your pressure plate to mine and it looks like you have the stock 964 unit. People have been mistakenly using them on 993s for ages thinking they are an upgrade but you're better off installing the stronger 993 plate. Otherwise your just taking a step backwards...

MarkD

Jason (or anyone else) I just finished buttoning up the engine/trans and THEN ran across this thread while looking for engine to trans torque values.

Regarding the 2 T/O bearings pictured, my replacement had the "crooked line" as does the OE part. Does this mean I did right in NOT lubricating the guide tube? I don't recall what material lined the inside of the T/O bearing if any. Just know that gap or line is there.

Hopefully I don't have to pull it apart.

While I'm here, I have a shop manual but cannot find the torque value for engine to trans nuts. They hide this stuff pretty well.
Anyone have this handy?

JasonAndreas

In a 1993 TSB for the updated release bearing Porsche recommended that you no longer lube the guide tube with 3EP but two shops I spoke with claim they still do. And for the first two years of production of the 996, Porsche was installing that guide tube (for a different style release bearing) dry but in 2000 they started using Optimoly MPO (Porsche part no. #999-917-788-00). 996TT and GT3 owners have complained of similar squeaks and dealers have also been lubing that guide tube (same as on the 964/993) with MPO.







Starter to transmission housing (M10) 40 Nm (30 ft-lb)
Transmission housing to engine (M10) 45 Nm (33 ft-lb)

MarkD

Jason, thank you very much.

So, it looks like it would be good to pull it all apart again, get yet another "special" grease and lube it. Grr...

Thanks for the torque specs!

JasonAndreas

If you already have Olista Longtime 3EP I'm not sure I would bother purchasing the MPO lube just for your dualmass flywheel guide tube. 3EP is compatible with polyamide (nylon) its just that MPO might be more compatible with a plastic-to-metal interface?

MarkD

Yes, I would guess that is the case.

Seems odd the OE setup did not squeak, even after 100K miles. Oh well, practice makes perfect.

Slow Guy

I truely like it when old threads are brought back, it gives everyone a chance to update it and maybe fill in a blank or 2.... I don't have a lot to contribute but maybe this will help future searchers.
I did have to re-gap several of my Bosch trips, I use Bosch's standard "L" shaped wire gapper tool. I got mine from Pelican. My new plugs ranged from about .5 to >.9. I would highly recommend checking them.

I went to the dealer a couple of months ago for a spare can of PS fluid, they showed me a tech bulletin from Porsche that changes the recommended PS fluid to Pentosin CHF 202.