Mark VIII rear hub compatibility - TCCoA Forums
LinkBack Thread Tools
post #1 of 5 (permalink) Old 10-27-2010, 09:26 AM Thread Starter
Join Date: Oct 2007
Location: Waterloo, Iowa
Posts: 17
Mark VIII rear hub compatibility

I have a problem with my Mark VIII. Iíve got three out of four hubs swapped to put Mustang wheels on. The right rear is stuck and currently no amount of heat, liquid wrench, 7 ton 3 jaw puller can break it free and Iíve been working on it for three days. Currently the axle and hub assembly are in my vice on my bench.

My question is can I get a hub/knuckle out of a MN12 (does it matter disk or drum) to replace the hub and axle. Are they the same as the FM10? Are there any axles in the MN12 that match the FM10? Iíve read that many of the MN12 are smaller diameters. There arenít many Marks in the yards around here.


speedracer6 is offline  
Sponsored Links
post #2 of 5 (permalink) Old 10-27-2010, 09:43 AM
Seasoned PostWhore

Super Moderator
Join Date: May 2003
Location: Tinton Falls, NJ
Age: 37
Posts: 7,462
Send a message via AIM to MadMikeyL
The knuckle from an MN-12 will work. Disc and drum cars use the same knuckle, but if it is off a drum brake car you will have to measure and drill out the 2 holes for the caliper mounting bracket. As for axles, the 97/98 MarkVIII has the strongest stock axles, with SC axles being the second best, and only slightly weaker than the 97/98 MarkVIII axles.

With that being said, have you tried using a press? Also is your problem that the hub is stuck in the bearing, or is it that the axle is stuck in the hub? In either case, I think a press would be your best bet to get it out.

-91 Cougar LS, coming soon, complete overhaul with a 427" Windsor.
-90 XR7 5-speed black on black w/sunroof, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, and ported big valve heads
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-90 SC Automatic rustbucket winter beater
-97 Tbird Sport 4.6 Nice weather daily driver
-"Your buddy Mike is INSANE!" -ClintD's dad
MadMikeyL is offline  
post #3 of 5 (permalink) Old 10-27-2010, 09:59 AM
Seasoned PostWhore
tbirdtess's Avatar
Join Date: Aug 2005
Location: Western New York
Age: 53
Posts: 2,542


Do you drag race you car?

If No, Then don't worry about axle size. I run the small V6 axles in my 1990
Circle track car. Factory stock class. I have not broken 1 yet

Put the knuckle & axle in until you get the old 1 apart.

I had my rear hubs redrilled & redrilled my rotors this spring.
Drill a rear knuckle as Mike said. (cooked a rear bearing)

Paul [email protected]
1990 Thunderbird Circle Track Street Stock
351W 2bbl.
C-4 Auto
3.90 open rear
tbirdtess is offline  
Sponsored Links
post #4 of 5 (permalink) Old 10-27-2010, 10:25 AM Thread Starter
Join Date: Oct 2007
Location: Waterloo, Iowa
Posts: 17
It is a daily driver. I have to press the hubs out anyway, so pressing the axle out is a great idea. The axle is seized at the splines of the hub.

I like the idea of subbing in a Tbird setup until I get the other fixed too. I need to drive the car. Thanks for the thoughts, guys. Good stuff.
speedracer6 is offline  
post #5 of 5 (permalink) Old 10-27-2010, 08:57 PM Thread Starter
Join Date: Oct 2007
Location: Waterloo, Iowa
Posts: 17
By going to the JY and getting a 91 SC hub/knuckle, I was now fearless about how I treated the original knuckle and started putting heat under the hub(instead of around the flange) right next to the aluminum knuckle and bearing. That heat caused it to break free and now I have the Mark axle.

Thanks for the input, guys.
speedracer6 is offline  

Quick Reply

Register Now

In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome