# Aluminum Subframe Bushings - Any one that has them **URL:** \ **Category:** SON240sx Automotive\ **Created:** [March 28, 2009, 12:17pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025 "2009-03-28T12:17:13Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 28, 2009, 12:17pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/1 "2009-03-28T12:17:13Z")
I need to know if you have had rear end problems. I have blown 4 pinion bearings in 2 rear differentials in 3 days. The aluminum bushings allow the rear diff no flexibility. Making the initial impact on the pinion very harsh. If you have ever seen a 300zx (Z32) subframe. You will notice that the rear diff sit’s on rubber bushings itself. Both on the carrier cover and the pinion tube. And of course the sub frame. The 300’s push in excess of 300hp…hmm. I am just wondering if anyone has had problems. I am pushing NO more then 220whp. IF THAT. And with one launch with both rear ends I instantly fried the bearings. I have brought this up with mutliple “experts” (if you will) and they all say bushings 100%. It makes sense to me. So now, for the price I paid for aluminum bushings, I am tripling if not quadrupling, because I know need ANOTHER rear diff. Have to replace the bushings with O.E’s. Etc etc. Not me mention I need to drop the sub frame…again. Its extremely agitating. So if anyone has some insight. I’d appreciate to hear it. Although I must say. The feel of the car with the bushings did increase dramatically. ---
**Author:** ![sidewayz240](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@sidewayz240](https://forums.speedlife.net/u/sidewayz240)\ **Post date:** [March 28, 2009, 2:54pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/2 "2009-03-28T14:54:21Z")
Im assumeing this is on an S13?? The diff is solid mounted to the subframe weither you have aluminum bushings or not, they should not cause any abnormal stress on the diff. In S14’s and Z32 like you said, the diff is mounted in rubber, but its popular to replace them with aluminum. So their not your problem. ---
**Author:** ![Pants](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pants/32/5590_2.png) [@Pants](https://forums.speedlife.net/u/Pants)\ **Post date:** [March 28, 2009, 4:11pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/3 "2009-03-28T16:11:15Z")
ok i have no idea what the fuck u are talking about ill have to come and see go to the shop tomorrow ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 28, 2009, 4:42pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/4 "2009-03-28T16:42:36Z")
then how the fuck have I blown to rear ends in 3 fuckin days? the only things I changed was the bushing and full multi link. and obviously the motor. ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [March 29, 2009, 6:12am UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/5 "2009-03-29T06:12:37Z")
I’ve been running solid aluminum bushings now for a good year and I absolutely love them! When I replaced them I also rebuilt the axles, replaced the ball joints, bearings and installed an ES bushing it. In the end, the only compliant I could come up with is that the resonating frequency is increased drastically since you remove the rubber etc… so you are able to hear every little sound or action the diff makes etc… No matter how I lunch my car or down shift from say 5th - 3rd… I’ve never had a Diff issue and my diff has approx 271,XXXkm’s… ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 29, 2009, 10:20am UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/6 "2009-03-29T10:20:41Z")
I really do not understand why I am having this problem then. Just to me it is all that makes sense really. It’s one of 3 things 1; To much power, which can not possibly be true 2; coincidence. two rear ends with 260,xxx+ km’s couldn’t take it no more 3; bushings, pinion angle…something. I have ruled out option 1 almost 100%. #2 I hope is true, but seriously what are the odds. And if I do just slap in another diff I just got and it goes…well, wtf now? The rubber dampener in my shaft is still good. My u-joint on pinion side has a slight stick to it. But would never cause this issue. I am not bashing the parts, my install or anyone here. Just trying to get to the bottom of this. Because I do not understand one bit. I see how everyone drives their cars. I will say I drive mine VERY fuckin hard…off the street. I do NOT drift. And the car has been on the road for less than a week. WHAT THE FUCK! Not to be rude. but stop telling me it’s not this and it’s not that. Give me different ideas, different perspectives. But what it has come down to is…I’m more than likely going to swap in the other diff (180,xxxkms) and see what happens. BTW, both times…first brake stand, second brake stand…HARD gripping launch, blown rear end. well, pinion bearings. ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [March 29, 2009, 11:08am UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/7 "2009-03-29T11:08:40Z")
> [@Keeping rust from forming on rotors during storage?](https://forums.speedlife.net/t/keeping-rust-from-forming-on-rotors-during-storage/21105/7): > > Not to be rude. but stop telling me it’s not this and it’s not that. Give me different ideas, different perspectives. Well only other thing I could possible think of would be something hindering the diff’s performance such as seized wheel bearings or brakes and its putting more strain onto the diff perhaps ? So when you beat on it, its heating up ? I don’t really know what to say man as its differentially an odd situation. I’d assume it wouldn’t be an angle issue since the Diff can only sit in the Subframe one way so I doubt it could get jammed causing stress to the pinon etc ? I’ve never heard of Solid Bushings ruining a Diff thou and this is the 1st time I’m reading anything along those lines. Most people either love them or hate them based on the ride/feel but never heard of them doing damage so it could just be coincidence and both Diffs were already on their way out. ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 29, 2009, 11:32am UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/8 "2009-03-29T11:32:16Z")
> [@Got your winter tires mounted yet? (lake effect warning tonight)](https://forums.speedlife.net/t/got-your-winter-tires-mounted-yet-lake-effect-warning-tonight/21102/18): > > Well only other thing I could possible think of would be something hindering the diff’s performance such as seized wheel bearings or brakes and its putting more strain onto the diff perhaps ? So when you beat on it, its heating up ? > > I don’t really know what to say man as its differentially an odd situation. I’d assume it wouldn’t be an angle issue since the Diff can only sit in the Subframe one way so I doubt it could get jammed causing stress to the pinon etc ? > > I’ve never heard of Solid Bushings ruining a Diff thou and this is the 1st time I’m reading anything along those lines. Most people either love them or hate them based on the ride/feel but never heard of them doing damage so it could just be coincidence and both Diffs were already on their way out. And that is what I am hoping for. Yet, are these diff’s not “bullet proof” I forgot to mention the first diff took the drivers rear wheel bearing with it…brakes are fine. Brand new Z32. The only thing with the bushing I can see, is A; no movement and B; them being to tall or short messing with pinion angle. Although I seriously doubt that. Leave it to me to get the most retarded problems out of cars… ---
**Author:** ![Tarz](https://avatars.discourse-cdn.com/v4/letter/t/43a26b/32.png) [@Tarz](https://forums.speedlife.net/u/Tarz)\ **Post date:** [March 29, 2009, 12:39pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/9 "2009-03-29T12:39:11Z")
i wouldnt think its a rear brake problem iv had that problem and it was fine. the pinion gear might not of had enough play was it the same bearing each time? ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 29, 2009, 12:40pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/10 "2009-03-29T12:40:05Z")
yes. outer pinion bearing. Race end up pitted. I will take pictures some time this week if i remember. ---
**Author:** ![Tarz](https://avatars.discourse-cdn.com/v4/letter/t/43a26b/32.png) [@Tarz](https://forums.speedlife.net/u/Tarz)\ **Post date:** [March 29, 2009, 12:43pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/11 "2009-03-29T12:43:24Z")
sorry i havnt removed my diff yet but do u remove the pinion when it comes out ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 29, 2009, 12:46pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/12 "2009-03-29T12:46:29Z")
what do you mean? you do not have to remove the pinion to pull the carrier…no. but to get to the pinion the carrier has to come out. air hammer will press it out of the outer bearing. or carefully with a hammer. be sure to mark your caps and shims so you do not have to reset your backlash. unless your changing the carrier all together. your best bet is looking into a fsm for your car. ---
**Author:** ![Tarz](https://avatars.discourse-cdn.com/v4/letter/t/43a26b/32.png) [@Tarz](https://forums.speedlife.net/u/Tarz)\ **Post date:** [March 29, 2009, 12:53pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/13 "2009-03-29T12:53:18Z")
it seems like that bearing is getting over loaded. is that the bearing ur pressing to when u put it back together? ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 29, 2009, 1:10pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/14 "2009-03-29T13:10:51Z")
I have not put anything back together. I am using completely different diffs. ---
**Author:** ![nd4boost](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nd4boost/32/5627_2.png) [@nd4boost](https://forums.speedlife.net/u/nd4boost)\ **Post date:** [March 29, 2009, 1:25pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/15 "2009-03-29T13:25:47Z")
check the cv axles for binding when you pull the carrier out a fucked cv axle could take out diff bearings ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 29, 2009, 2:53pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/16 "2009-03-29T14:53:53Z")
that would fry carrier bearings no? not pinion bearings. I remember feeling the shafts…they felt okay. Then again I was not checking them for binding. either way they should make noise…clacking etc ---
**Author:** ![Hurricane](https://avatars.discourse-cdn.com/v4/letter/h/e9bcb4/32.png) [@Hurricane](https://forums.speedlife.net/u/Hurricane)\ **Post date:** [March 29, 2009, 4:45pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/17 "2009-03-29T16:45:36Z")
My guess is that the subframe is not sitting high enough up on the mounts (chassis to sub frame studs) which has changed your driveshaft to pinion angle and you are there for overloading the bearing and its letting go. My best guess anyways… I’ve never done alum bushings. ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [March 29, 2009, 6:13pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/18 "2009-03-29T18:13:51Z")
I’m curious… What happens when you cook the pinon bearings etc ? Does the Diff just stop working ? Do you hear a loud bang or any type of noise when they go ? I’m wondering incase it happens to me but as far as I’m aware my diff is operating perfectly fine. Where did you get your Subframe Bushings ? I’m running the ones Bing sells and so are a few other people I know all without issues. ---
**Author:** ![nd4boost](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nd4boost/32/5627_2.png) [@nd4boost](https://forums.speedlife.net/u/nd4boost)\ **Post date:** [March 29, 2009, 6:24pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/19 "2009-03-29T18:24:44Z")
> [@polishing aluminum](https://forums.speedlife.net/t/polishing-aluminum/21106/4): > > that would fry carrier bearings no? not pinion bearings. > > I remember feeling the shafts…they felt okay. Then again I was not checking them for binding. either way they should make noise…clacking etc fair enough, my fault, i didnt read you whole post if your frying pinion bearings id say its the driveshaft causing the problems mabie the carrier bearing on the driveshaft is shot or you just had bad diffs but that does seam weird to louse 2 diffs with the same bearing ---
**Author:** ![Slide\_Junkie](https://avatars.discourse-cdn.com/v4/letter/s/74df32/32.png) [@Slide\_Junkie](https://forums.speedlife.net/u/Slide_Junkie)\ **Post date:** [March 29, 2009, 6:46pm UTC](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025/20 "2009-03-29T18:46:07Z")
I say buy Platoons GTR rear end set up… if you blow hat bitch then something else is the matter… lol [Next page](https://forums.speedlife.net/t/aluminum-subframe-bushings-any-one-that-has-them/123025.md?page=2)