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What do you recommend for a good valve cover gasket
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nextgen
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PostPosted: Sat Nov 11, 2023 9:26 pm    Post subject: What do you recommend for a good valve cover gasket Reply with quote

Is Cork still the best as long has you don't store it to long or get a cheap sent that don't fit correctly

Or is there a new material ..

Use adhesive or not and if you do, both sides of the cork or only one.

Did the valve adjustment and that was fine.

Old gaskets lasted for a long time no problem

New gaskets and both sides leaked.
Put in another set and only one side leaked.

They are for my T-4 bug.
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PostPosted: Sat Nov 11, 2023 10:11 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

The good gaskets are really more like rubber with cork.

the purpose of the cork being to make it more flexible and grippy.
But anyway the quality of the rubber is what matters, cork is cork more or less.

Works with tires too.
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PostPosted: Sun Nov 12, 2023 1:30 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Type 1 guy here but my 2 cents are that thickness and bail strength have a lot to do with it.
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PostPosted: Sun Nov 12, 2023 5:01 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

https://www.thesamba.com/vw/forum/viewtopic.php?t=780188&highlight=cover+gasket
I’m Still having the same issue. I am convinced that the manufacturers have done something different to them.
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PostPosted: Sun Nov 12, 2023 6:04 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Cork, I use Permatex aviation to the valve cover only, stock valve cover and bail.

Never a problem.
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PostPosted: Sun Nov 12, 2023 8:07 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

I’ve been using the blue striped Fel-Pro from Autozone on my T1 engines. Like Glenn I use Permatex aviation to the valve cover only, stock valve cover and bail. These have been working great for me.

https://www.autozone.com/external-engine/valve-cov...er+gaskets
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PostPosted: Sun Nov 12, 2023 8:34 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

I`ve used the silicone gaskets from Wolfsburg West with good results.
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PostPosted: Sun Nov 12, 2023 8:44 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

I've used only the cork gaskets on my two VWs, since 1972 and 1976 respectively, and have had zero leak issues. I've also been known to re-use such gaskets.

I have factory/vintage unpainted/patina covers and bails on both.
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PostPosted: Sun Nov 12, 2023 9:12 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

jbbugs wrote:
https://www.thesamba.com/vw/forum/viewtopic.php?t=780188&highlight=cover+gasket
I’m Still having the same issue. I am convinced that the manufacturers have done something different to them.


Glad you linked to that so I don't have to re-type all of that! Laughing

But yeah.....things have changed in rubberized cork.

The other issue is this.....and I see this same problem in all kinds of AFTERMARKET auto parts.

Our original parts (valve cover gaskets) were made by some large company for VW. In the beginning eons ago, during testing, I am sure there were issues. I am sure there were many versions made and tested while VW was ramping up production after WW2.

Like any other consumable part, VW had to figure out what version lasted a reasonable amount of time leak free, was affordable, worked with the oil and heat range.....and wrote a spec for it.
In turn, the mfg of the gaskets issued a rubberized cork sheet specification for type of rubber resin, grade of cork, size of granules, porosity etc.....to make sure that when they dies cut these parts.....they met VWs spec.

It's also possible that VW did the cutting and sealing and only had to issue a specification to the raw material/sheet goods mfg.

That's how it works generally.

Cut to 40-50 years later, demand is huge versus right after ww2.....and it's all been farmed out to big sealing company's like Elring and Reinz. Those are still OEM and material and construction still have to meet spec.

Later still, the ACVW is out of serial production and these parts are kicked full to the aftermarket curb.

A lot of 2nd and 3rd world aftermarket companies.....while they may try to follow the spec....they have no real knowledge of WHY certain chemicals, rubber types, porosity, granule size etc.....are important. It's an obsolete part system for an obsolete car. They are used to modern materials and designs......so they skimp and substitute.

And, they are driven to do so because of COST targets.

I see this same issue in MANY rubber and plastic parts. If your only knowledge of valve cover gaskets is watercooled.....you may question why Viton is required instead of say Neoprene or Buna, not realizing that the temperature of the AC engine at this gasket....might be 150° higher than in a WC car.

Ray
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nextgen
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PostPosted: Sun Nov 12, 2023 9:41 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Funny my dad once said misery like company. Man I got alot of that on this post. I feel so much better, ha.


I was thought it was only me, to a point were I was thinkiing maybe I put the covers on Reversed !!

OK so use stock cork with Permatex which I did use, on both sides of the cork.

As mentioned they are T-4 covers.

BTW having a hard time trying to remove the double sided Permatex cork.

RAY your are a T-4 guy were are you. T-1 vs T-4 should not be any difference except the T-4 has larger covers.

Thanks again,
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nextgen
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PostPosted: Sun Nov 12, 2023 9:45 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Oh as for the Permatex, how much do you use? Just a light bit in a few places as a few guys said just to hold the gasket in place or do you do the entire surface?
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PostPosted: Sun Nov 12, 2023 10:29 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

I use the cork gaskets and soak the in water for a while as they swell up..then a thin coat of grease on the cover and on teh cork gasket...works every time.
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PostPosted: Sun Nov 12, 2023 10:37 am    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Wow, that is a new one for me. DO you wait till it is dry before using the grease????

Sounds good.

Thanks
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PostPosted: Sun Nov 12, 2023 12:16 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Like i say i soak them in water and just pat them dry with a paper towel. Thin coat of grease..as someone mentioned it is about the suggness of the bails.
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PostPosted: Sun Nov 12, 2023 12:23 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

For sure the Bails hold it together.
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PostPosted: Sun Nov 12, 2023 12:32 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

raygreenwood wrote:


Cut to 40-50 years later, demand is huge versus right after ww2.....and it's all been farmed out to big sealing company's like Elring and Reinz. Those are still OEM and material and construction still have to meet spec.


FWIW, I've just binned a pair of Elring cork valve cover gaskets. They leaked just as bad as the no-name ones from ebay that I bought them to replace. I wish I hadn't bought a few pairs of the Elrings. I'll probably not use the remainder of them.

The previous several pairs of no-name covers, prior to this last leaky pair, were leak free. There seems to be no logic to the failure.

I'm trying silicone ones now, but with the weather turning, I've only been out in the truck once since I fitted them. No leaks when I came back.

Type 1 engine. OG VW valve covers and bail arms.
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PostPosted: Sun Nov 12, 2023 12:33 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

nextgen wrote:
Oh as for the Permatex, how much do you use? Just a light bit in a few places as a few guys said just to hold the gasket in place or do you do the entire surface?

Just around the entire rim, enough to hold it in place.
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PostPosted: Sun Nov 12, 2023 1:44 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Just a smear of grease both sides for me and they don't leak (type-4). I've been doing that for25 years or more.
But... to bump up to free post minimums I had a habit of buying these gaskets (saves thinking) and ended up with quite a lot of them so it's at least 10 years since I bought any. I still have half a dozen sets so I'm good for a while yet. Perhaps as Ray proffers, they aren't the same these days.

The other thing is I don't check my valve gaps every service. New engine I did the first few services but they never changed so I'm happy to check every third time or if I felt the engine wasn't running smoothly and couldn't find a fuel related problem I'd check them.
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PostPosted: Sun Nov 12, 2023 3:34 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

raygreenwood wrote:
And, they are driven to do so because of COST targets.

I bought this leaf rake last week; apparently it is cheaper to just provide the screw to lock in the handle, rather than install it at the factory. Even drilling a hole and inserting a screw has a cost...
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PostPosted: Sun Nov 12, 2023 3:40 pm    Post subject: Re: What do you recommend for a good valve cover gasket Reply with quote

Glenn you hit it on the head.
( Just around the entire rim, enough to hold it in place).

From what I am getting from this post and from from some real old ones on this N.G.

It really is keeping the gasket in position especialy when installing it. If the cover was glass, we would be able to see if the gasket moved while we installed it.

One guy on youtube just does on dot of sealent on each corner and the middle of each side and back and front. Total 8 dots and he holds them in place till they dry a cloth pin.

His story was if you do it all around it is hard to clean it off the cover next time he did his valves.
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