Hard Race Bushing Failure - Educational
Posted: Mon Jun 08, 2020 4:44 pm
I figured this was worthy to bring up since many of us use Hardrace products on our cars. I have noticed that many of the bushings that have been replaced on my R between 2012-2017 with Hardrace products are showing a concerning amount of wear or outright failure. The most recent of which was a front sway bar and compliance bushing failure which has turned out to be a huge headache. I had noticed a clunk in the front end of my ITR a while back but could not diagnose it initially and thought it may have been the spoon rigid collars “settling”.. While under the car I noticed the sway bar endlinks appeared to be deformed. These are somewhat hard to see due to the metal “cups” that sort of nestle the bushings in place but they appeared to be pushing past this. I ordered some energy suspension bushings for both the endlinks and stock 24mm R sway bar. While swapping out the bushings I found the following problem:
1) All 4 Hardrace sway bar bushings had severely deformed and failed. Essentially leaving them loose. And yes they were torqued to spec.
2) Front left endlink was partially broken at the threads. From what looked like movement allowed by the failed bushings. Endlinks are Hardrace which included the bushings.
3) Both sway bar mounting bushings (also Hardrace) were deformed, partially torn and some of the bushing material was stuck onto the bar from wearing off the bushing.
4) Left compliance bushing sway bar mounting stud BROKE off when little pressure was applied to remove. Likely as a result of the left endlinks movement.
I can confirm that the Hardrace compliance bushings seems to be okay and do appear deformed or severely degraded BUT the housing which appears to look similar is NOT a Honda housing. It is absolutely inferior in quality, including the aforementioned broken stud.
I have purchased replacement parts and have consulted several other ITR owners including Ryan (coolhand), my brother Nolan (EG6-DC2) and Chris from Kingpin and can say their experiences or knowledge with some of Hardraces products are similar to mine. This is meant for educational purposes and to create dialog if others have had similar experiences with their products. Seems to me that they are Harldy Race - and I am glad this failure occurred off the track.
Some things that I have learned is that the blue TPV bushing type material seems to go quicker than their black hardened rubber. But I did experience a rear upper control arm bushing crack of theirs with this black rubber as well, so who knows. It was a less dramatic failure than the blue stuff for sure. I have also learned that the blue sway bar bushing material is significantly “squishier” than when it was installed and it seems to rub off and adhere to the bar.
Miles of use: about 6000 miles
Track days: handful
Lowered: Not much
Springrate: 425f/375r for majority of miles.
Pics:
Nathaniel
1) All 4 Hardrace sway bar bushings had severely deformed and failed. Essentially leaving them loose. And yes they were torqued to spec.
2) Front left endlink was partially broken at the threads. From what looked like movement allowed by the failed bushings. Endlinks are Hardrace which included the bushings.
3) Both sway bar mounting bushings (also Hardrace) were deformed, partially torn and some of the bushing material was stuck onto the bar from wearing off the bushing.
4) Left compliance bushing sway bar mounting stud BROKE off when little pressure was applied to remove. Likely as a result of the left endlinks movement.
I can confirm that the Hardrace compliance bushings seems to be okay and do appear deformed or severely degraded BUT the housing which appears to look similar is NOT a Honda housing. It is absolutely inferior in quality, including the aforementioned broken stud.
I have purchased replacement parts and have consulted several other ITR owners including Ryan (coolhand), my brother Nolan (EG6-DC2) and Chris from Kingpin and can say their experiences or knowledge with some of Hardraces products are similar to mine. This is meant for educational purposes and to create dialog if others have had similar experiences with their products. Seems to me that they are Harldy Race - and I am glad this failure occurred off the track.
Some things that I have learned is that the blue TPV bushing type material seems to go quicker than their black hardened rubber. But I did experience a rear upper control arm bushing crack of theirs with this black rubber as well, so who knows. It was a less dramatic failure than the blue stuff for sure. I have also learned that the blue sway bar bushing material is significantly “squishier” than when it was installed and it seems to rub off and adhere to the bar.
Miles of use: about 6000 miles
Track days: handful
Lowered: Not much
Springrate: 425f/375r for majority of miles.
Pics:
Nathaniel