I wasn't expecting to get anything done for awhile, but my Wife went to get her nails done this afternoon and she took the Baby along too. That left me to my own devices for 3 hours before I had to get to work.
What to do? What to do?
I decided to install the new OEM Black Tokico 80 Series LC Shocks I picked up. The Toyota part number on these is
48531-69417, and if you were going to order by application you would ask for a REAR shock absorber for a 1997 Toyota Land Cruiser.
The LC shocks include the
RUBBER BUSHINGS and TOP NUT ONLY!!!. The OEM part diagrams online and at your local dealer will show that the shocks include the rubber bushings
AND all the hardware, but that is not correct.
The additional hardware you need is:
4 x Toyota Part # 90948-02144.... Bend over, because these washers are $10... EACH.
I also picked up the LC centering washers, but it turns out they cannot be used on 3rd Gen 4Runners. Just for reference, they are
part # 90948-02141, and cost about $7 each.
The first task was to remove my Bilstein 5100's, which was relatively uneventful thanks to the design of the Bilstein shocks. The shaft on the Billies has a 5mm hex shaped hole on the end, so I used a hex key socket and my ratchet, along with a 17mm wrench to hold the top nut, and they spun right off. These 5100's were included with my Sonoran Steel 1.2 lift kit when I purchased it 2 years ago. I would have liked to compare the LC shocks to a factory 4Runner shock as well, but none of my 4Runners have OEM shocks on them and the ones I removed were discarded long ago.
Once off the truck I started comparing the 5100's to the OEM LC shocks. Some things you might notice in this picture:
- The 5100's and the OEM LC shocks are almost the exact same length uncompressed.
- The size of the tube (and I would assume the piston inside) is about the same.
- The lower eye mount is the same size
- The OEM LC shocks have little skid plates welded onto the front of the shock, see bottom RH side of LC shock in pic below
- Metal dust cover on the OEM LC shock, versus a rubber boot on the 5100
Moving up to the top of the shock, there are some big differences between the two:
-The upper mounting shaft is much larger on the LC shock. IIRC, I measured it @ 9/16" OD. The top of the Bilstein shaft was maybe 3/8" OD. The inner diameters of the upper/lower retaining washers and rubber bushings had corresponding measurements.
- The bushings used on the LC shock are much thicker and wider, and the hardware (upper & lower retaining washers) are much thicker.
Pictured below are the centering washers for the LC shock (LH side), an aftermarket OEM replacement Rancho shock (middle), and an OEM shock that came off my wife's 2000 (thank goodness I keep every last piece of hardware that comes off my vehicles). These washers sit above the lower rubber bushing, between the bushing and the bottom of the upper shock mount. They are a critical part because without them, the shock's upper shaft will move around inside the mounting hole on the shock mount, and slowly widen and stretch the hole. The centering washers on my 5100's didn't have much of a lip to them and when I removed the 5100's I noticed a slight enlargement of the upper shock mounting hole @ one edge on both sides.
Notice the LC centering washer is much wider, and thicker than the 4Runner parts. Most importantly, notice the size of the center hole on the LC washer... it's HUGE.
The raised centering section of the LC centering washer WILL NOT fit into the hole on the upper shock mount of a 3rd gen 4Runner. You cannot use the LC centering washers without drilling out the hole on your 4Runner to accommodate the larger raised center section.
Both the aftermarket & OEM 4Runner centering washers fit nicely over the shaft of the LC shock, and fit the hole on the upper shock mount of the vehicle, so I decided to use them instead.
LC centering washer on LC upper mounting shaft. The mounting holes on the rear upper shock mounts on 80 series LC's must be quite a bit bigger than the ones on a 4Runner.
4Runner centering washer on LC upper mounting shaft... a much better fit. Notice how the centering washer is the same diameter as the LC bushing... more on this later.
Just for the sake of comparison, this shot shows a LC upper/lower retaining washer next to one of the 5100's upper/lower retaining washers.
On the Driver's side I decided to use the aftermarket (Rancho) OEM replacement centering washer, along with the LC upper/lower retaining washers. The Rancho washer had a little bit taller lip than the OEM washers and it was a tighter fit in the upper mounting hole. I would have used these washers on both sides, but I could only find one.
This is how parts that sit BELOW the shock mount look when assembled onto the shock's mounting shaft.
And with the top bushing, retaining washer, & top nut...
Driver's side installed!! On the bottom of the shock you use the two bushings that are included w/the LC shocks, and the OEM 4Runner mounting bolt & washers.
Compared to the old 5100 on the passenger side...
On the passenger side, I had to re-use one of the OEM 4Runner centering washers. I just chose the one that was in the best shape w/mimimal corrosion.
Remember earlier I mentioned that the LC bushings were the same diameter as the 4Runner centering washers? Well, the only problem with that is when you tighten down the top nut and compress the bushings, they flare out past the edge of the centering washer on the top side. This causes the edge of the washer to sort of "dig into" the bushing. I'm not sure if this will result in premature bushing wear, but I'd rather replace some bushings now and then than drill out my frame to accept the LC centering washer.
That's about it... Done...
... And done...
ONE FINAL NOTE.... I spoke with NachoPitt today, who happened to be doing this same install on his 4Runner. He advised that the upper lower retaining washers from a 4Runner will NOT fit over the shaft of the LC shock. This means you either MUST purchase the LC hardware, or you MUST drill out the center bores on the OEM 4Runner hardware. I prefer to use the LC upper/lower washers because they are wider and do a better job of supporting the taller/wider LC rubber bushings.
Tomorrow I'll take some pictures of some OEM 4Runner upper/lower retaining washers, and compare their center bores to that of the OEM 4Runner centering washers to see if there is a difference, then edit in the info.
Last but not least, while I was wrenching I figured I'd throw a few coats of paint on the rear UCA's I built and get them ready for install. Installing the LC shocks between coats was better than watching paint dry.