View Full Version : rear sub frame
snail282
04-22-2015, 10:05 PM
Any body ever done a rear sub frame rebuild/swap on a BH?
My car had an unfortunate encounter with a hill over the winter an one of the wheels is towed way in, think I bent what ever piece controls that. Anyway, my plan was to rip another sub frame out of a junkyard, rebuild it, and then swap it into the car all at once. Figure this is the best way to limit the time the car is on jack stands.
I was wondering if anyone has done anything like this and had some advice on things like what brand bushings to get (I plan to replace literally all of them), and, well, any other advice you can think of.
thanks .... to whoever reads this, I guess.
Odycee
04-22-2015, 10:28 PM
I like Group N but most people like Whiteline polyurethane.
shoguy
04-23-2015, 07:12 AM
also would be a good time to check out if you have a limited slip rear differential. I believe the Limited trim had them, base model did not. Just make sure you get one from the same type of transmission to keep the correct gear ratio. This sounds like a good plan you have, would also give you a good opportunity to clean any rust and give the subframe a good coat of paint
Yamazaki
04-23-2015, 09:39 AM
When I did the de-Outback-ification of my H6, I swapped in a new rear subframe (the old one was disintegrating into rust). I installed brand new bushings all-around (and new lateral links). I just ordered new OEM ones though. Nothing fancy. So now the rear end is relatively brand new and should last another 10~15 years.
rkrenicki
04-23-2015, 01:28 PM
snail282, has your car been in Maryland all of its life? If so, good luck with the rear subframe bolts as they tend to rust and seize up. I was really lucky taking out the bolts on my car, but one on Yamazaki's car ended up snapping on us and needed to be drilled out.
If you do not HAVE to take the subframe itself out, then I recommend leaving it where it is. Most of the bushings are on the control arms and lateral links, all of which are (should be) removable.
The rear diff carrier bushings are replaceable while still on the car. It is a little tricky to do, but dealers and repair shops do not pull the subframe to do them, so why should we? ;)
snail282
04-24-2015, 08:33 PM
I guess I don't have to take the subframe out but I don't actually have anyplace to work on the car and I never bothered to see what I bent/broke so I'm not sure what I have to replace. I figured if I went this rout I would only have to have the car up on jacks at my buddies house for an afternoon, as opposed to however long it will take me to diagnose and buy parts.
One of my buddies brought op the idea of solid subframe bushings, either aluminium or delron and I was wondering what you guys thought of that? That got me thinking though, I have a lathe, and delrin isn't that expensive, so what would happen if I just made all the bushings out of delrin? I only use the car as a winter beater/race car so I'm not concerned about ride quality or anything, just wondering if anybody has experience with solid bushings?
Also thanks for all the replies.
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