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General Information => General => Topic started by: Dakotakid on April 05, 2010, 09:13:21 am
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Perhaps a stupid question:
Why did VW employ paper gaskets in 100 mm. inside cv joints???
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to keep the grease in there. and to keep the grease/oil mix in there when those stupid rubber/metal dust caps from the center of the flange starts to leak.
if you leave them out, you will figure out why VW put them there in very short order. lol
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Then why don't the 90mm ones have them?
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Yeah, huh. ;D What he said, ^
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you will only have issues with leakage if the rubber input drive seal fails inside the drive flange, and I would argue that it is a good thing for them to leak when that happens, so you notice it before the CV is trashed.
I have never used a paper gasket when re-assembling, and never had any issues...
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and I would argue that it is a good thing for them to leak when that happens, so you notice it before the CV is trashed.
So gear lube in the cv joint will trash it?
I had one of the little caps leak when, for some reason the axle shaft and tranny output shafted were too close and rubbed a hole right in the middle of the cap. And it did fill the cv with gear lube.....
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I'm pretty sure my 90mm replacement axles had the sticker-type paper ones.
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another product I need to make out .020 reinforced silicone...
GB
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Then why don't the 90mm ones have them?
my axles in my rabbit had them the first time i disassembled it, they were 90mm. and it had a 4 speed gear mixer in it. about half of them that i see have the paper gasket.
and owen, how will 90wt leaking into the CV destroy it? its got grease in there already, whats the difference if the grease gets thinned down a little bit? ive had about 4 different CVs fill up with 90wt, and all i ever do is clean the gunk out, and re-pack the joint.
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the stresses a cv joint sees are very extreme, the cv grease is specially formulated for those stresses, regular grease wont do.
when the cv grease is diluted by gear oil, it is not as effective at lubricating and protecting the cv from the immense stress it sees. if allowed to sit with gear oil in it the CV will fail prematurely.
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Weird. All the 90mm ones I have seen except the new (chinese :shudder:) one I bought didn't have gaskets. None of them leak either.
Of the cars I've pulled apart the inner CV has always been shot when it was mixed with gear oil.
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normal grease works just fine for my CV joints. i have not had an inner CV go bad on me yet.
and i take my sutff apart and put it back together so much that the gear oil/grease in my CVs was never there for long.
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Of the cars I've pulled apart the inner CV has always been shot when it was mixed with gear oil.
I will bet that they had either failed recently, or the CV's were on their way out.
normal grease works just fine for my CV joints. i have not had an inner CV go bad on me yet.
and i take my sutff apart and put it back together so much that the gear oil/grease in my CVs was never there for long.
regular grease will not protect the CV from wear very well, if regular grease is used the joint wont last nearly as long as it should
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oh, i will take your word on it being different. but its not like im going to go out and get CV joint grease and re pack all my joints. that would be like a 2 day project with as many cars as i have around here. lol.
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yep, CV grease is very different, it is moly based and VERY sticky/thick.
regular grease may work for a while, but CV's(and their grease) were designed to last 200,000 miles before they start clicking. you may get 10,000 with regular grease/bathed in gear lube, but that is still a drastically reduced lifespan.
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not like it makes everything ok, but i do use power punch grease, its way stickier than anything ive used before, besides that damned CV grease. god that stuff is a nightmare. when you work on CVs, you might as well just dip your hands in grease up to your elbows, seems like i end up getting it all the way up there anyway. CV grease is real fun to try and clean off too. no matter how many grease rags or shop towels you use, your hands always feel greasy afterwards. dawn dish soap does not cut CV grease, lol.
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the same reasons that make it a pain to work with are what make it work so good.
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I did not state my original question properly. I was wondering (as did Tyler) why the 90's never have the gasket. Out of all the cars I've owned or dismantled, no 90 ever had paper.
I just switched a Golf over to 100's along with spindles and their bearings, ball joints, and flanges (seals).
As I switched flanges, I found that one of the little brass oil slingers (just under the flange washer) had fractured into two pieces and I was working in a place where all my storage transmissions were 65 miles away. So, I just put the pieces back together and inserted the larger flange and it's hardware.
My Volks. of America mechanic friend states that I should be OK with this but I now run the risk of the axle gland nut working lose and it needs to be watched. I am not sure of the correlation here....unless simple "collapse" potential. Anyway, he sez he has several of these slingers on hand, but, I was too tired to tear it apart again. He states that it won't fracture more and take out the bearing.
I hope this does not give me practice hitching a ride some dark, cold, lonely night!!!!!!!!
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like the little brass conical washer under the drive flange? thats there to keep everything centered.
how is the brass conical washer in the tranny going to make the axle nut come loose on the hub?
and the first time i took my rabbit trans/axles out i had 90mm paper gaskets in there. should i see if i can dig them up?
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Probably most cars with 90mm joints are old enough that most have been pulled apart and the gasket torn or thrown away and not replaced.
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thats what i was thinking too, but then i got to thinking again, 1.5's never came stock in 81, and my car came from the factory with a 5 speed im pretty sure.
is there any way to break down a vin code? or is there an equipment tag somewhere? like that tells you what engine and trans are SUPPOSED to be in the car? i know most other vehicles have something like this.
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MK2s have that in their trunk on a sticker. I won't tell you if a CV has been changed or not though
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MK2s have that in their trunk on a sticker. I won't tell you if a CV has been changed or not though
NO WAY! you have got to be kidding me?
honestly the only reason i was wondering, was so i could look and see what my car was SUPPOSED to come from the factory with.
and if you didnt catch it, i was being sarcastic in the first part of the post.
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http://www.checkmycar.com/ (http://www.checkmycar.com/) tells you what engine it came with but nothing about the tranny. All these "free" vin check sites offer a free search, they won't show you anything unless you pay though :(.
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NO WAY! you have got to be kidding me?
I kid you not 8)