This project was started by Kris, IFSJA Member #300
It's taken me a long time to get them into some form
of usable web page.
There are bound to be some mistakes and for now there
are many.
Some folks appear to measure off the rotors, others
are trying to subtract backspacing.
Neither of those methods are completely accurate or
foolproof.
If you would like to submit wms numbers, directions are provided below the table.
Last Update: 10-20-2007
*** See note below regarding FSJ WT and JTruck WMS differences ***
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Ramcharger |
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Directions: (how to measure your wheel mounting surface)
Do this with the tires and rims off, no guessing, with the vehicle secure on jack stands please.
1. Place two straight edges across the area that the
rims make contact with.
(not the rotor, not the backing plate, don't estimate,
as you can see above that's not working)
2. For the front, make sure wheels, or what is now the wheel mounting surfaces are pointing straight ahead.
3. For the front, make sure the straight edges are
vertical (up and down).
(if you run the straight edges horizontal, the numbers
will be off due to toe in)
4. For the front place the straight edges towards the
front of the hub.
(there will be a small difference between the front
and rear side of the hub from toe in also)
5. For the front, measure as close to the wms as possible
at the bottom.
(it will be different at the top due to the camber)
6. Measure only the distance between those contact areas, it's that simple.
It's not foolproof, but if everyone does the same thing then we should be able to clear up this mess.
FSJ WT & JTruck Note:
The open knuckle WT and JTruck front Dana 44's share
the same housing and axleshafts within their respective years (passenger
drop and driver drop inner shafts do not interchange but the outer stub
shaft will). The difference in WMS seems to be consistant with a difference
in the hubs and where that places the WMS.
I'm doing my best here but I have to rely on the numbers
that are presented.
If you would like to submit numbers and have them
included you can respond to the IFSJA post listed below
http://www.ifsja.org/forums/vb/showthread.php?t=31011
or email me direct.
tadsal@cox.net
Thanks,
Tad Strickland
10/20/2007