Hi folks, subject car is 1986 740 Turbo Intercooler.

It still has the 1 piece rotor, and I need to convert to 2 piece.
I have a frozen caliper, and don't want to spend money on the old setup.

I have a 1988 740 GLE for parts. My plan is to remove the hubs from
the 88 and put them on the 86.

Will they fit?

What can I expect during the conversion, and do I need additional parts
other than the spindle nut and new cap?

Do I remove everything from the 86 including the inner race, and then
the
2 piece hub from the 88 just slips on?

Also, I read the brickboard stuff on the hubs, and I'm confused about
what it says about a race slipping out of the hub, and you have to put
it
back and then hold it somehow during installation....????? Can someone
translate that or expand on that for me?

I'll also be doing the jumbo brake upgrade....

thanks much, Glenn

/g wrote:
As I recall, 1988 has a larger spindle and different hub design, so if
that's the case you will need to swap the whole strut assemblies. Pop
the cap off the '88 and see if it has a castle nut with a cotter pin or
the later style locknut.

The older style has a conventional wheel bearing that you pack with
grease and assemble. The later type uses ball bearings permanently
mounted in the hub assemblies.

"James Sweet" <jamessweet1 (AT) trashmail (DOT) net> wrote

The 86 Turbo has the old style 1 piece hub with adjustable/packable
bearings.

The 88 parts car has the new style 2 piece hub.

I want to put the 88 hub on the 86. If the spindle is different, then
no, the 88 part won't fit.

I was hoping that things didn't change that much between years.
I'll be tearing things down today and take a look.

thanks, /glenn

/g wrote:

There are three different hub designs. There is the old one piece hub
with the bearing races pressed into the hub which is part of the brake
rotor. Then there is the updated hub with the bearing races pressed into
a hub which is separate from the brake rotor, then there is the newest
design starting in '88 or '89 in which the bearings are ball bearing
units permanently installed in the hub which fits on a larger spindle.
If your parts car has the original separate hub/brake assemblies that
fit on the older spindle with conventional bearings then it's a straight
swap.

"James Sweet" <jamessweet1 (AT) trashmail (DOT) net> wrote

Excellent! That's the type of distinction I was looking for. I'll pull
the hub
off the parts car and see what bearings are in it.

I did hit the 'yards this morning, and no older 740's around. I called
the
dealer and list is $145 each for the conversion hubs. I get a discount, so
I'll
pay a bit less than that if I go with the dealer. I have a couple of other
options
that I've run across that I need to check.

Thanks for the info. /glenn

/g wrote:

Screw the dealer, the only time I ever set foot in there is when I need
a part that is absolutely not available anywhere else. FCP Groton,
alloemvolvoparts.com and one other that escapes me at the moment are
where I get most of my parts.