# solid aluminum subframe bushings vs polyurethane? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [September 16, 2007, 9:48pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504 "2007-09-16T21:48:31Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![maxgohan](https://avatars.discourse-cdn.com/v4/letter/m/22d042/32.png) [@maxgohan](https://forums.speedlife.net/u/maxgohan)\ **Post date:** [September 16, 2007, 9:48pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/1 "2007-09-16T21:48:31Z")
is the noise transfer with the solid aluminum bushings really bad? is it worth the extra money for the polyurethane subframe bushings? ---
**Author:** ![Hurricane](https://avatars.discourse-cdn.com/v4/letter/h/e9bcb4/32.png) [@Hurricane](https://forums.speedlife.net/u/Hurricane)\ **Post date:** [September 17, 2007, 7:51am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/2 "2007-09-17T07:51:31Z")
Its all depends what you consider bad. This is a 100% personal preferance call. Your best bet it to get a ride with someone who has alum bushings and judge for your self. Personally I would never street drive a car with alum bushings, but then again alot of people would say I’m a pussy for saying that so. Its really up to you. ---
**Author:** ![S13GG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s13gg/32/5506_2.png) [@S13GG](https://forums.speedlife.net/u/S13GG)\ **Post date:** [September 17, 2007, 8:11am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/3 "2007-09-17T08:11:45Z")
but then again, would it be a terrible idea to insulate these solid bushings with a tiny gasket, much like the ones found on the tops of the struts/shocks? just to slightly reduce this? Jesse… any comments? ---
**Author:** ![DarkForceJackal](https://avatars.discourse-cdn.com/v4/letter/d/b38774/32.png) [@DarkForceJackal](https://forums.speedlife.net/u/DarkForceJackal)\ **Post date:** [September 17, 2007, 10:10am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/4 "2007-09-17T10:10:23Z")
I’ve got polyurethane inserts in the rear and there is significantly more vibration/noise, but also much better response engaging each gear. I would guess aluminum might be a tad extreme for a daily driver for most…but hey like Hurricane said - personal call. ---
**Author:** ![Lucas180](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lucas180/32/5556_2.png) [@Lucas180](https://forums.speedlife.net/u/Lucas180)\ **Post date:** [September 17, 2007, 2:29pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/5 "2007-09-17T14:29:38Z")
Im going to re done mine next year the subframe, was wondering the same thing about aliminum vs poly thing to…maybe some people that have ridden in both can shed some light on it! ---
**Author:** ![white240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/white240/32/5651_2.png) [@white240](https://forums.speedlife.net/u/white240)\ **Post date:** [September 17, 2007, 2:44pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/6 "2007-09-17T14:44:08Z")
Definitely something I’d be interested in hearing as well…as I’m trying to figure out what to use on my car. ---
**Author:** ![Lith](https://avatars.discourse-cdn.com/v4/letter/l/fbc32d/32.png) [@Lith](https://forums.speedlife.net/u/Lith)\ **Post date:** [September 17, 2007, 2:44pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/7 "2007-09-17T14:44:47Z")
I’m wondering where people are getting these S13/S14 polyurethane subframe bushings from… I’ve never seen them for our cars. I’ve seen them for Z32’s (Energy suspension has them). I need to do mine as well, since I hate these subframe inserts I have now. Also, I think the solid aluminum bushings are a bit too harsh for street driving. ---
**Author:** ![white240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/white240/32/5651_2.png) [@white240](https://forums.speedlife.net/u/white240)\ **Post date:** [September 17, 2007, 3:03pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/8 "2007-09-17T15:03:48Z")
Could you not use r32 skyline bushings? In my understanding they share most components of the rear subframe with the s13 ---
**Author:** ![240newbie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/240newbie/32/5487_2.png) [@240newbie](https://forums.speedlife.net/u/240newbie)\ **Post date:** [September 17, 2007, 3:18pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/9 "2007-09-17T15:18:50Z")
Hey guys I have solid aluminum subframe bushings… the ones that uhave to drop the subframe and pop the old ones out for. Personally i notices maybe a 30% diffrence as far a ride comfort. But it is alot louder, you hear the diff doing everything, you hear any play in the upper or lower arms, driveshaft, half shafts and so forth (if there is any play), i havent really noticed a huge diffrence in road noise, but you hear every noise in the subframe, but i also have pillow ball RUCAs. They have practicly eliminated wheel hop, and gear enguagement is amazing. i wouldnt really base your opinion off my car, but i like em. If you really want i can take you for a spin in mine if u wana meet up some time and you can hear what im talking about. ---
**Author:** ![S13GG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s13gg/32/5506_2.png) [@S13GG](https://forums.speedlife.net/u/S13GG)\ **Post date:** [September 17, 2007, 3:25pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/10 "2007-09-17T15:25:16Z")
> [@Anyone here get the lockport paper?](https://forums.speedlife.net/t/anyone-here-get-the-lockport-paper/14074/4): > > I’m wondering where people are getting these S13/S14 polyurethane subframe bushings from… I’ve never seen them for our cars. I’ve seen them for Z32’s (Energy suspension has them). > I need to do mine as well, since I hate these subframe inserts I have now. > > Also, I think the solid aluminum bushings are a bit too harsh for street driving. [http://www.superpro.com.au/](http://www.superpro.com.au/) ??? ---
**Author:** ![Lith](https://avatars.discourse-cdn.com/v4/letter/l/fbc32d/32.png) [@Lith](https://forums.speedlife.net/u/Lith)\ **Post date:** [September 17, 2007, 3:49pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/11 "2007-09-17T15:49:32Z")
> [@some people just have to make a big deal....](https://forums.speedlife.net/t/some-people-just-have-to-make-a-big-deal/14083/50): > > [http://www.superpro.com.au/](http://www.superpro.com.au/) ??? All I could find is this: SPF2687K Rear Cross-member Insert Enhancement Mounts SPF1800K Rear Cross-member Supplement Washers SPF1799K Rear Cross-member Supplement Washers And they are all subframe insert kits… not replacement bushings. Only thing I could find (on google) were the MMR Direct polyethelyne (not polyurethane) bushings for the S13/S14’s. It’s basically a hard plastic that won’t break, so you get stiffness of aluminum bushings but won’t get the squeaks/creaks that you normally would with the aluminum ones. However, they are just as hard and the ride will be just as harsh. ---
**Author:** ![sidewayz240](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@sidewayz240](https://forums.speedlife.net/u/sidewayz240)\ **Post date:** [September 17, 2007, 4:59pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/12 "2007-09-17T16:59:53Z")
I’ve heard you can use Z32 poly bushings and you have to either remove a bit of the length, of get a different nut. I think i’ll go this route when I do mine. ---
**Author:** ![duckJAI](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/duckjai/32/5553_2.png) [@duckJAI](https://forums.speedlife.net/u/duckJAI)\ **Post date:** [September 17, 2007, 6:09pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/13 "2007-09-17T18:09:47Z")
i heard energy suspension is bad. some of the busings fucked up or something read this on zilvia just had a quick glance, i could be totally wrong. ---
**Author:** ![bing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bing/32/7211_2.png) [@bing](https://forums.speedlife.net/u/bing)\ **Post date:** [September 17, 2007, 6:16pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/14 "2007-09-17T18:16:10Z")
i dont mind the full aluminum at all… but my car is not for testing… i have some serious play in my rear wheel bearings right now and other stuff going on that makes other noises… ---
**Author:** ![Hurricane](https://avatars.discourse-cdn.com/v4/letter/h/e9bcb4/32.png) [@Hurricane](https://forums.speedlife.net/u/Hurricane)\ **Post date:** [September 18, 2007, 8:42am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/15 "2007-09-18T08:42:41Z")
Nismo sells a subframe poly bushing set for both S13 and S14. ---
**Author:** ![Lith](https://avatars.discourse-cdn.com/v4/letter/l/fbc32d/32.png) [@Lith](https://forums.speedlife.net/u/Lith)\ **Post date:** [September 18, 2007, 9:23am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/16 "2007-09-18T09:23:06Z")
> [@Official NHL Offseason Thread](https://forums.speedlife.net/t/official-nhl-offseason-thread/14053/39): > > Nismo sells a subframe poly bushing set for both S13 and S14. Ahh… I didn’t even think of searching for Nismo stuff 🙂 S14 > **[Nissan Parts & Accessories Online | Courtesy Nissan in RICHARDSON, TX](https://www.courtesyparts.com/nms/s14/s14_bushings.html)** > > Shop Genuine Nissan Parts from Courtesy Nissan, your source for Nissan OEM parts and accessories in RICHARDSON, TX. S13 > **[Nissan Parts & Accessories Online | Courtesy Nissan in RICHARDSON, TX](https://www.courtesyparts.com/nms/s13/s13_bushing.html)** > > Shop Genuine Nissan Parts from Courtesy Nissan, your source for Nissan OEM parts and accessories in RICHARDSON, TX. imo, these are well worth the money ---
**Author:** ![sil8t](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@sil8t](https://forums.speedlife.net/u/sil8t)\ **Post date:** [September 18, 2007, 10:12am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/17 "2007-09-18T10:12:20Z")
cant be anyworse then having full track set up in the rear also i have energy suspension inserts for 10 bucks brand new if anyone wants em ---
**Author:** ![sidewayz240](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@sidewayz240](https://forums.speedlife.net/u/sidewayz240)\ **Post date:** [September 18, 2007, 2:09pm UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/18 "2007-09-18T14:09:48Z")
> [@Monthly Text Msg Count?!](https://forums.speedlife.net/t/monthly-text-msg-count/14099/14): > > i heard energy suspension is bad. > > some of the busings fucked up or something > > read this on zilvia > > just had a quick glance, i could be totally wrong. The only bad thing i have heard about energy suspension is their T/C rod bushing. It used to be a one piece and did not allow any flex or deflection causing the bending of the tension rod brackets. This was corrected by making these bushings 3 piece. ---
**Author:** ![jlee](https://avatars.discourse-cdn.com/v4/letter/j/898d66/32.png) [@jlee](https://forums.speedlife.net/u/jlee)\ **Post date:** [September 20, 2007, 8:16am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/19 "2007-09-20T08:16:58Z")
Nismo bushings!!! yea anyways… so yea i got these for my car cause my bushings are shot… i’ll let you guys know how they feel once they’re in. i’ve heard there just the same as stock… ![http://photos-c.ak.facebook.com/photos-ak-sf2p/v133/226/85/1657860007/n1657860007_346954_8170.jpg](http://photos-c.ak.facebook.com/photos-ak-sf2p/v133/226/85/1657860007/n1657860007_346954_8170.jpg) ![http://photos-a.ak.facebook.com/photos-ak-sf2p/v133/226/85/1657860007/n1657860007_346960_9395.jpg](http://photos-a.ak.facebook.com/photos-ak-sf2p/v133/226/85/1657860007/n1657860007_346960_9395.jpg) Jon ---
**Author:** ![DJPyro](https://avatars.discourse-cdn.com/v4/letter/d/278dde/32.png) [@DJPyro](https://forums.speedlife.net/u/DJPyro)\ **Post date:** [September 20, 2007, 8:48am UTC](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504/20 "2007-09-20T08:48:11Z")
keep in mind, they’re talking stock 20 years ago, not stock 200,000km later when you’re driving it now, so the difference should be fairly drastic regardless. [Next page](https://forums.speedlife.net/t/solid-aluminum-subframe-bushings-vs-polyurethane/109504.md?page=2)