Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Bearing madness

Thread Tools
 
Search this Thread
 
Old Jan 4, 2008 | 05:01 PM
  #16  
LT Texan's Avatar
LT Texan
Rennlist Member
20 Year Member
 
Joined: May 2001
Posts: 5,278
Likes: 16
From: Austin, TX
Default

With my engine out, of course I'll rebuild the TT. So I decided to take a look at bearings available online. Hey, I don't know jack about bearings, but I found a joint out in Cali that sells TT bearings (6006ZZ, double shielded, 16k rpm - I think that works) at 10 for $39.99.

Take a look:

http://www.vxb.com/page/bearings/PROD/6006ZZ

I don't want to volunteer to organize a group buy....well not just yet.
Reply
Old Jan 4, 2008 | 05:11 PM
  #17  
BC's Avatar
BC
Rennlist Member
20 Year Member
 
Joined: Dec 2001
Posts: 25,186
Likes: 105
Default

VXB is very good.
Reply
Old Jan 4, 2008 | 06:20 PM
  #18  
marton's Avatar
marton
Drifting
 
Joined: Nov 2001
Posts: 2,233
Likes: 1
From: zürich, switzerland
Default

HTML Code:
 I will indeed start a page on my site with a complete list of 
alternative bearings with some information on how to replace the 
throw out bearing and include various suppliers for each type.
Sounds great; look forward to this info

Marton
Reply
Old Jan 4, 2008 | 07:01 PM
  #19  
RyanPerrella's Avatar
RyanPerrella
Nordschleife Master
15 Year Member
 
Joined: Apr 2006
Posts: 8,934
Likes: 3
From: theporscheconnection.com
Default

10 x bearings for $39.00

I'll go in 3 way with someone, or 4 way with another manual owner and 2 auto owners

anyone else interested ?

PM me

Am i right that i need 3 for a manual GT TT
Reply
Old Jan 4, 2008 | 07:58 PM
  #20  
FlyingDog's Avatar
FlyingDog
Nordschleife Master
 
Joined: Sep 2004
Posts: 9,429
Likes: 6
From: Not close enough to VIR.
Default

Originally Posted by BrendanC
VXB is very good.
I know nothing about bearings. You say VXB is good, but are the specs for those bearings good enough?

Ryan, PM sent.
Reply
Old Jan 4, 2008 | 07:59 PM
  #21  
BC's Avatar
BC
Rennlist Member
20 Year Member
 
Joined: Dec 2001
Posts: 25,186
Likes: 105
Default

The bearings that they sell are the brand names mentioned here and elsewhere. I say they are "good" wrt the fact that they are prompt, easy to deal with, and offer a wide range of choices, including ceramic bearings.
Reply
Old Jan 4, 2008 | 08:06 PM
  #22  
dr bob's Avatar
dr bob
Chronic Tool Dropper
Lifetime Rennlist
Member
 
Joined: Oct 2001
Posts: 20,506
Likes: 564
From: Bend, Oregon
Default

Considering the amount of work involved changing them, I'd rather spend the few extra $ on name-brand premium bearings for the torque tube. Ditto the alternator, torque converter, front wheel bearings, power steering and air pump. In fact I can't think of a ball or roller bearing in the car that I'd consider replacing with cheap. $4/each for name-brand non-asian/central American 6006 high-speed grade 6 or higher with high-temp grease, sealed and shielded (not just shielded) is an impossibly good buy. Advice-- confirm place of manufacture, and inspect the bearing for manufacturer's name before you buy. I've purchased bearing sets that were boxed identically but had all different sources inside. Kinda like buying the aftermarket motor mounts from Rock Auto. Ya just don't know what you are getting until you get well past the name printed on the box sometimes.
Reply
Old Jan 4, 2008 | 09:02 PM
  #23  
RyanPerrella's Avatar
RyanPerrella
Nordschleife Master
15 Year Member
 
Joined: Apr 2006
Posts: 8,934
Likes: 3
From: theporscheconnection.com
Default

MAtt, I follow DR Bob on this one

$12 for 3 bearings is definately cheap, but if there is a known better bearing then i can certianly step up my budget. I guess in all honesty $12 is almost too cheap to justify the work involved in changing them.

I need to study the specs more and see what's best.

I was kinda jumping the gun because of brendan's post, but now that he clarified that good, is more to do with service then bearings then i want to take a look at some other options.
Reply
Old Jan 4, 2008 | 09:05 PM
  #24  
Peter F's Avatar
Peter F
Addict
Rennlist Member

20 Year Member
 
Joined: Nov 2001
Posts: 1,242
Likes: 4
From: Sweden, Stockholm
Default

I'm with Dr. Bob on the TT bearings.
To big of a job to use cheap bearings with the risk of having to do it all over again.
My original bearings where made by *** Germany and marked 6006 C5 and had a metal shielding on them and clearly had leaked some grease over the Years.
(C5 is the bearing tolerance and I beleive they are a little looser than C1, C3 or nothing marked for tolerance, guess it is to compensate for heat expansion)
The best alternative i could find was made by SNR France and was rubber sealed and packed with a high temp grease 6006.FT150.

https://www.snr-bearings.com/catalog...l&id=6006FT150

Maybe the 6006.FT150ZZ is even better with a higher max rpm?

Just my 2 cents.

/Peter

Last edited by Peter F; Jan 4, 2008 at 09:22 PM.
Reply
Old Jan 4, 2008 | 09:05 PM
  #25  
FlyingDog's Avatar
FlyingDog
Nordschleife Master
 
Joined: Sep 2004
Posts: 9,429
Likes: 6
From: Not close enough to VIR.
Default

Sounds like we're thinking alike.

Does anybody have a good source for correct spec bearings?
Reply
Old Jan 4, 2008 | 09:46 PM
  #26  
ROG100's Avatar
ROG100
Basic Sponsor
Rennlist
Site Sponsor

20 Year Member
 
Joined: Jan 2003
Posts: 16,942
Likes: 1,045
From: Double Oak, TX
Default

Easy guys not everyone is out there trying to rip you off.

I have been selling the best quality SKF TT bearings for less than $30 for a while.
I can buy the lower quality ones for $3 to $4 each at wholesale - is it worth it?
I have helped people out with Flappy Bearings - best quality for less than $15 each.

I will put a list of your part numbers and some prices together.
I buy in bulk and can still make a margin and sell to you at a reasonable price - My kids do need shoes
8>)
__________________

Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014

928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."






Reply
Old Jan 4, 2008 | 10:10 PM
  #27  
PorKen's Avatar
PorKen
Inventor
Rennlist Member

20 Year Member
 
Joined: Sep 2002
Posts: 10,212
Likes: 465
Default

Note about the fan bearings above...

928ntslow figured out that you don't even need the spacer with the later clutches. The clutch axle has a step where it goes through the inner bearing, and the nut holds it there. Essentially, the inner bearing acts as a thrust bearing.
Reply
Old Jan 4, 2008 | 11:14 PM
  #28  
LT Texan's Avatar
LT Texan
Rennlist Member
20 Year Member
 
Joined: May 2001
Posts: 5,278
Likes: 16
From: Austin, TX
Default

Originally Posted by ROG100
Easy guys not everyone is out there trying to rip you off.

I have been selling the best quality SKF TT bearings for less than $30 for a while.....My kids do need shoes
8>)
If Roger has done the homework, I'll go to him and pay for the expertise. Cheap luxury to get it right.
Reply
Old Jan 5, 2008 | 12:23 AM
  #29  
RyanPerrella's Avatar
RyanPerrella
Nordschleife Master
15 Year Member
 
Joined: Apr 2006
Posts: 8,934
Likes: 3
From: theporscheconnection.com
Default

^^^^^^^ agreed ^^^^^^^^^^

So how big of a pain in the *** is it to replace the bearings in a TT and do the work yourself as opposed to getting a rebuilt TT?

Dan the pod man, was it your site that has a write up for replacing bearings and the tool you need to rig up to act as a press? I think thats what i saw.
Reply
Old Jan 5, 2008 | 12:33 AM
  #30  
dr bob's Avatar
dr bob
Chronic Tool Dropper
Lifetime Rennlist
Member
 
Joined: Oct 2001
Posts: 20,506
Likes: 564
From: Bend, Oregon
Default

The ZZ in the part no denotes double shields (one on each side). Unless there's debris flying through the TT, the double seals will likely be fine (SS or FF IIRC). Your bearing supplier will remind you of which is which.
Reply



All times are GMT -3. The time now is 12:36 PM.