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Guest Message by DevFuse

* * * * * 1 votes

Advice for Longer CV Joints Life!

Axle EA82 constant velocity joints CVJ DOJ Loyale 2.7 Turbo JesZeK

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1 reply to this topic

#1 Loyale 2.7 Turbo

Loyale 2.7 Turbo

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Posted 06 December 2010 - 12:55 PM

Advices for Longer Constant Velocity Joints' Life!



Having Changed Many Many Constant Velocity Joints on all these Years (Not only in Subarus),


I've Found some Ideas that Really Help to Extend their Life, that I Want to Share with you.




The CV Joint Needs the Very Best Quiality Graphite Grease that you can Obtain, 


Lesser Quality Greases leads to Lesser C.V. Joint's Life for Sure.


I Always Use Graphite Grease Approved for C.V. Joints, like this "Meistersatz"...





...but there are Other Good Quality Brands in the Market.


Be Sure that you Choose a Grease intended for C.V. Joints.


I Suggest you to use Always the Subaru Original Rubber Boot.


Even Using Cheap C.V. Joints...




...Because other Brands Doesn't last very much.



About Rubber Boots, Subaru designed one Short Boot to be Used at the Wheel's Side (outer Boot), and one Longer Boot to be Used on the Gearbox Side (inner Boot), the Difference could be Seen in this Drawing:




Since both Boots does have the Same opening Measurements, their only difference is that one is Longer than the other, it does Not make any Sense to Use the Short Boot; Specially considering that the Wheel side does Much more Effort due to the Steering Turns that Stretch 'em many many times per trip. So my Suggestion is:


Use the Longer Rubber Boot at Both ends:excl: 



Because the inner Boot is Longer and it Works Perfect in the Place of the Outer Boot (Shorter). Being Longer aids the Boot to Handle Better the Continous Stretchings from the Steering Turns; so it Will Last Very Longer than the Short one, holding there the Grease.



Also I've Found that a Simple Drivin' Behaviour can Make C.V. Joints to Last much more longer:




To Relief Pressure from C.V. Joints while doing U-Turns; let me Explain:

C.V. Joints works as you can see on the Followin' Animation:





So, when you do a U-Turn, the Balls goes from one Side to Another very very Fast; if Acceleration is Forced (in Example while Accelerating the Engine) the Balls will go Faster and harder with the Extra Pressure, and that will Worn them and their Holding Basket very Fast, also their C.V. Joint's base.


So my Advice this time is:


Do the U-Turns Just with vehicle's Impluse.


Give to the Vehicle enough Speed and leave the gas pedal while doing the U-Turn, also you could Place the Shifter in Neutral Gear (or Press the Clutch Pedal to the Bottom) in manual transmission vehicles; only while the Car is Turning. That Releases the pressure from the C.V. Balls ...



...it makes Miracles in C.V. Joint's Life!




Last thing that Helps is the Use of:



Good Quality Zip Ties, instead the Metallics with Razor's Edge that could Cut the Boot:

I'm Using those in many cars since 1999 with Great Results!


Even in my Lifted Subaru "BumbleBeast" as you can See in this Photo:





They'll Stay right There if Properly Adjusted and be Sure to Obtain the Best Quality that you can buy.  


So, to Finish this Writeup, let me Tell you that only Two Things are the Most important in C.V. Joints life:



Grease: if a Boot Fails, you must Hurry up to Change it along with new, fresh Grease, as soon as possible, so Weekly (or Sooner) inspections to the Boots are Highly recommended.



Drivin' Behaviour: if you Usually Force the C.V. Joints, (i.e: like Burning Tires in U-Turns) they'll Break soon.



I Hope this Writeup Might be Helpful...

Kind Regards.

► Edited to add the Tags for the New USMB Search System.

Edited by Loyale 2.7 Turbo, 07 May 2013 - 12:21 PM.

#2 grossgary


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Posted 06 December 2010 - 01:01 PM

nice hit, aftermarket axles are junk, so keep your good axles as long as possible.

wayne, doesn't post very often, offers some tips on refreshing/rebuilding your axles with the axles you already have. he explains it here:
http://subaruxt.com/...ilit=axle wayne

with his write up here:

though i'm not sure i fully understand what he's doing because it seems like you get the same thing, but i'm just seeing it wrong.

right, cheap zip ties definitely won't hold that.

Edited by grossgary, 06 December 2010 - 01:06 PM.

Also tagged with one or more of these keywords: Axle, EA82, constant velocity joints, CVJ, DOJ, Loyale 2.7 Turbo, JesZeK

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