CV boots torn already

[T77911S]

i put 2 new boots on my 930 last year. I have not driven it that much and I saw the other day that BOTH are torn!!! not just a little but all the way around.
not very happy.
OEM supplier

[DRACO A5OG]

It should be under warranty. I know it is no consolation as the work is a real PITA and messy to boot. So sorry for the unintended pun.

She was not raised during hibernation, right? Boots do not like being kept in the air.

[Bob Kontak]

I am leaning towards "born on date" of the boots.

[Ian Comerford]

This is becoming a more frequent occurrence and seems attributable to thinner/lower quality rubber boots. See if you can track down NOS

Ian

[Bob Kontak]

Originally Posted by Ian Comerford

This is becoming a more frequent occurrence and seems attributable to thinner/lower quality rubber boots.

I have had replacement XJ12 ball joint boots tear within months of replacement. Those old rebuildable ones have a blow-out port that does not allow over greasing. I thought age but a quality issue surely could cause this.

Ian,

Just looked up Harston on Google Earth. What a cool little town. How old is your abode?

[Dave Colangelo]

Originally Posted by Ian Comerford

This is becoming a more frequent occurrence and seems attributable to thinner/lower quality rubber boots. See if you can track down NOS

Ian

I just swapped them on my 78 SC (the old ones may be been original) and the new ones are noticeably thinner (the guy that was helping me even commented on it). I would also say that if you jack your car up frequently you can put some extra stress on them as the suspension hangs. My old ones did not have the crimp clamp on the smaller end. Im not sure if they fell off over the years or were never there but the extra play may have lent to their longevity. I crimped the new ones so we shall see. Unfortunately I put these boots in the "sacrificial part" category. Its a messy job to change them but I have done it on both my 911 and 944 now and once you have done it you can get it down to under 1.5 hours a side (its also a good excuse to check CV wear).

I would see if there is any kind of warranty on them, otherwise I would just rotate a fresh one on.

Regards
Dave

[Ian Comerford]

Bob,
Not really a town with just 24 houses. One part of ours is 400 years old, the main part is 167.

Ian

[4flyboy]

Hi guys,

I am dealing with exactly the same issue here. A year and a half ago a respected P-car specialist in Tampa did an engine out service on my 1984 Carrera Turbo Look.

We replaced the 35 year old boots with what I believe to be OEM units all around. I've driven the car less than 2,000 miles and the outboard boots are shredded and slinging grease.

I've looked at the units in Pelican's catalog and the reviews indicate the same is happening with the replacements we buy there.

I believe the problem persists in rubber bushes for our suspensions etc. It looks as if I'll have to go to Elephant and pay astronomical prices for rubber that I can count on, or Porsche which is as bad.

I recently bought Porsche seals for my front and rear windscreens because I don't want to do them for another 35 years?

Removing those damn axles is time consuming and expensive only to have the problem again in a year and a half.

It's disgusting to save a few pennies in manufacturing.

Scott

[sugarwood]

Yes, the replacement boots are flimsy and almost paper thin compared to OE rubber
It looks like Pelican sells GKN Leobro (which I believe is OE) and Empi
Has anyone explored other options?

Here is a 3rd brand which I think is a Chinese mauf

[DRACO A5OG]

I think it is a conspiracy from GKN or EMPI not to sell thick boots like they are on their complete axle set.

When I replaced my axles, those boots were hardy.

I know I am paranoid.

[T77911S]

sugar. that's the ones I bought.
they are OEM "SUPPLIER" not oem parts.

a whopping $5 for theses or $50 for Porsche parts. cant believe they are 50!!!.

I put these on my 77 and same thing, not long and they tore. I did put a lot of grease in on the 77 so I made sure I did not do that again thinking that contributed to the short life on those.

deleted commit about prices......

[Targa Me]

Originally Posted by T77911S

i put 2 new boots on my 930 last year. I have not driven it that much and I saw the other day that BOTH are torn!!! not just a little but all the way around.
not very happy.
OEM supplier

New boots degrade quicker when left stationary. Drive the car, they'll last longer.

[VFR750]

^
That's silly. My old boots have sat for more than 34 years. They held up fine.

Poor quality rubber. Plain and simple.

Thinner is better when it comes to bending. Not so good if it is caused by impact. Tearing all the way around: crappy rubber.

Sitting was not the cause, don't blame yourself for not driving it.

[1QuickS]

Same here. Replaced boots with some from host site and while prepping my car for sale I see cracking all around...one year old in mild N California and car driven frequently enough and parked in my garage. Gonna change them for next owner.

Darn irritating!

[pmax]

Originally Posted by DRACO A5OG

She was not raised during hibernation, right? Boots do not like being kept in the air.

Originally Posted by Targa Me

New boots degrade quicker when left stationary. Drive the car, they'll last longer.

Since it bears repeating, I have to ask what's the theory here ?

[T77911S]

is there a better boot out there other than a $50 boot.

[Targa Me]

Originally Posted by VFR750

^
That's silly. My old boots have sat for more than 34 years. They held up fine.

Poor quality rubber. Plain and simple.

Thinner is better when it comes to bending. Not so good if it is caused by impact. Tearing all the way around: crappy rubber.

Sitting was not the cause, don't blame yourself for not driving it.

I was referring to new boots with the thinner rubber. The older boots were fine when left stationary.
I have experienced this first hand.

[Gazebo78]

Interesting. I'm getting mentally prepared to do outside boots on my car. Did the insides a while back with parts from our host. Still ok but they haven't had much use. After reading
this thought about alternatives. Checked out ******** which is where I get parts for all my other vehicles. They have 2 brands. One even for extreme use (out of stock at this time). I'm contemplating trying out one of these.

[drtyler]

Rockford CV sells quality boots. Maybe check with them to find if they have the correct size for your year 911.

[Targa Me]

Originally Posted by pmax

Since it bears repeating, I have to ask what's the theory here ?

I don't have a theory. But I can tell you from experience that these new types of boots deteriorate when not used (driven). I had two Vw golf's, both needed front axles. One Golf was running and the other was not. The Golf that was running saw long life on the new boots while the stationary car did not.

In addition to that, in reading the threads here it seems that folks the have purchased new boots, but don't drive their cars much have experienced premature boot failures.

This is all based on what has happened to me and based upon what I've read .

I have no scientific proof.