Hello all,

I purchased a set of Jim Lab's Unobtanium bushings a long time ago and like the idea introduced with the lube groove bushings.

I am contemplating modifying my existing bushings to include a grease groove.

My thought is to use a router withe a bit and bearing and simply place the bushing over the bit and rotate the bushing the around the bit in order to create a channel.

I have never seen the actual lube groove bushings; though, I have read about squeaking over time with the bushings that I have and would like to create this.

So, could anybody give me information relating to the dimensions that I should use? Should the groove be centeres lengthwise in the bushings? How deep should the groove be? What shape should the groove be? (Square cut of rounded?)

Also, should I extend this further and drill holes through the arms into the bushing and fit with a grease fitting. Of course, this would be done before inserting the metal barrel.

Any thoughts would be great?

Thanks!

 

bump...

Does anybody have any thoughts?

 

Very good questions. Not sure if you will find answers on this forum alone though.

Definitely install a greasable fitting if you can. Search for 'Zerk' or zerks for pictures and other threads on the topic. Those bushings can get noisy over time if not lubed and they sound terrible when they do!

Personally, I wouldn't run them on a street car but that is another discussion.

 

Just install zerks fittings. The lube groove bushings started squeeking after 1.5yrs on me anyway.

 

Just put in zerk fittings... grease gets everywhere anyway

 

Is this on a street car? If so, sell them and get a set of Super Pro Bushings

 

I'm not really sure what I would classify this car as. It is definitely not daily driven. I am in the process of putting in a 3 rotor, so it is more of an obsession car. ...if that makes any sense

So are you all saying to just drill a hole through the arm and bushing, tap the arm, thread zerk, grease sleeve, and then insert sleeve. I would periodically just grease the zerk, which would squeeze grease around the sleeve.

So, no groove would be necessary.

Thanks.

 

I have the delrin bushings with the lube groove and I have to say that although they did remain relatively ok for about 1 to 1 1/2 years they were starting to get noisy this year. I went this long without greasing them up partially due to laziness and wanting to see how effective the lube grooves were. I say put in the zerk fittings regardless.

I lubed up mine and they're fine again! With that said these bushings are fairly harsh for street use, but my car is bordering more towards track in my street/track set-up.

 

To bad you can't actually GET SuperPro bushings anymore—particularly individual pieces.

 

^ rx7store has them