slosurfer
04-01-2007, 01:48 PM
For those that have lifted the rear of your 4runner and added longer shocks, this is for you. I will start by saying that I have the cruiser coils and rancho 9009 adjustable shocks. I believe they have the same dimensions as the rancho 5009's that are very popular for this lift. I have noticed at the dunes that I will bottom out on my rear shocks. This only happens at the dunes when the whole back end gets slammed down at once, like when at speed going from flat to climbing a steep dune. Other shocks may be different, but it is worth crawling under and measuring to see if you need to do something like this. I never noticed it till I was doing stuff at speed in the dunes or hit a dip on a forest service road, etc...
I measured from the bumpstop to the axle and have about 4.25". Not knowing exactly how much of the shaft is showing when the shock is compressed, I estimated that I have about the same measurement on the shaft before the shock bottoms out. Sounds okay, except that the shock is angled, so if the axle is coming straight up towards the bumpstop, the shock will bottom out before the bumpstop hits because the shock is on the long leg of the triangle. This is why I have only noticed this at the dunes where the whole back end can slam down at once.
To remedy I ordered these:
http://www.energysuspensionparts.com/proddetail.asp?prod=9.9101
I probably could have ordered 1" ones but I wanted to make sure I got ones big enough and they were only $2 more for the set. After measuring again, I cut them down to a little over 1"
The tops I cut off:
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5193.jpg
YOu will need an extension if you plan on doing this while the coils are on the vehicle and you plan on getting anywhere near the center. If you are planning on putting cruiser coils on, I would drill when you have the coils off and then when they are on you can measure, trim your bumpstop as needed, and then install them.
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5194.jpg
I had to jack up one side at a time in order to make room for the drill and bits. It is real hard to get perfectly centered by drilling from underneath, because you can't get the drill bit straight up and down. I drilled a 3/8" hole and then installed the bumpstop with a 14 mm or 9/16 socket. NOw I shouldn't bottom out on my shocks anymore at the dunes.
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5191.jpg
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5190.jpg
Overall this was real easy once you have a long enough drill bit. It shouldn't hamper my on trail travel and will help my shocks stay alive longer. I don't know the specifics on the other shocks in this thread but it is worth getting under your rig with a tape measure before you bust a shock.
I had a chance to test these out at Death Valley recently. It was nice and soft on the odd times that they would slam together. The combo of stock bumpstop and poly bumpstops made for a very nice cushion. Also, there was no loss of flex and I can breathe easier knowing I am not going to blow out one of my shocks.
I measured from the bumpstop to the axle and have about 4.25". Not knowing exactly how much of the shaft is showing when the shock is compressed, I estimated that I have about the same measurement on the shaft before the shock bottoms out. Sounds okay, except that the shock is angled, so if the axle is coming straight up towards the bumpstop, the shock will bottom out before the bumpstop hits because the shock is on the long leg of the triangle. This is why I have only noticed this at the dunes where the whole back end can slam down at once.
To remedy I ordered these:
http://www.energysuspensionparts.com/proddetail.asp?prod=9.9101
I probably could have ordered 1" ones but I wanted to make sure I got ones big enough and they were only $2 more for the set. After measuring again, I cut them down to a little over 1"
The tops I cut off:
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5193.jpg
YOu will need an extension if you plan on doing this while the coils are on the vehicle and you plan on getting anywhere near the center. If you are planning on putting cruiser coils on, I would drill when you have the coils off and then when they are on you can measure, trim your bumpstop as needed, and then install them.
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5194.jpg
I had to jack up one side at a time in order to make room for the drill and bits. It is real hard to get perfectly centered by drilling from underneath, because you can't get the drill bit straight up and down. I drilled a 3/8" hole and then installed the bumpstop with a 14 mm or 9/16 socket. NOw I shouldn't bottom out on my shocks anymore at the dunes.
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5191.jpg
http://i38.photobucket.com/albums/e113/slosurfer27/IMG_5190.jpg
Overall this was real easy once you have a long enough drill bit. It shouldn't hamper my on trail travel and will help my shocks stay alive longer. I don't know the specifics on the other shocks in this thread but it is worth getting under your rig with a tape measure before you bust a shock.
I had a chance to test these out at Death Valley recently. It was nice and soft on the odd times that they would slam together. The combo of stock bumpstop and poly bumpstops made for a very nice cushion. Also, there was no loss of flex and I can breathe easier knowing I am not going to blow out one of my shocks.