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Oil Fill Cap

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Old Nov 2, 2009 | 10:16 PM
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Mine leaks. Anyone know where I can get one that screws into the stock valve covers? Or a replacement seal for the one I have?
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Old Nov 2, 2009 | 10:20 PM
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It should be pretty easy to just make a gasket out of a sheet of gasket maker...
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Old Nov 3, 2009 | 01:55 PM
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Originally Posted by Kubs
Mine leaks. Anyone know where I can get one that screws into the stock valve covers? Or a replacement seal for the one I have?
$10 @ Ecklers http://www.ecklers.com/product.asp?p...35&dept_id=153
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Old Nov 3, 2009 | 02:20 PM
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Originally Posted by pmihaltian
Thanks!
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Old Nov 3, 2009 | 03:38 PM
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Originally Posted by pletzvet
It should be pretty easy to just make a gasket out of a sheet of gasket maker...
No gasket maker as this can detrioate & pieces can fall in filler hole.
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Old Nov 3, 2009 | 03:59 PM
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If you get the cap sealed tight the pressure will find somewhere else to vent.
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Old Nov 3, 2009 | 04:12 PM
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Im also adding a catch can with a breather on it as a temp solution until I can afford to build the new engine.
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Old Nov 3, 2009 | 09:02 PM
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When you purchase that new oil fill cap, you might as well add a new dipstick also. I just had to ge both for my 91. Oil fill cap seal and the neck of the dipstick had a piece break off and started spitting oil out under continueing high revs.
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Old Nov 3, 2009 | 09:19 PM
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Originally Posted by l98tpi
When you purchase that new oil fill cap, you might as well add a new dipstick also. I just had to ge both for my 91. Oil fill cap seal and the neck of the dipstick had a piece break off and started spitting oil out under continueing high revs.
Thanks for the info. My dipstick starting spewing onto my header at the tack in the spring. I heard it was quite a fire display but no one got pictures. I replaced it then.
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Old Nov 3, 2009 | 11:49 PM
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Originally Posted by 94vettelover2
No gasket maker as this can detrioate & pieces can fall in filler hole.
The OEM cap on the early L98s (i.e. 84-85) have a gasket/seal on the base of the cap after +/-20 years of heat and chemicals, these get hard and brittle and can deteriorate. If you know what kind of material to look for and you know what you're doing, it's an easy fix. I see that Kubs is referring to a '90 which I'm less familiar with, but I'd expect to find an o-ring seal on the newer caps.
Last edited by pletzvet; Nov 4, 2009 at 12:01 AM.
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Old Nov 4, 2009 | 12:38 AM
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Originally Posted by pletzvet
The OEM cap on the early L98s (i.e. 84-85) have a gasket/seal on the base of the cap after +/-20 years of heat and chemicals, these get hard and brittle and can deteriorate. If you know what kind of material to look for and you know what you're doing, it's an easy fix. I see that Kubs is referring to a '90 which I'm less familiar with, but I'd expect to find an o-ring seal on the newer caps.
Yes the new ones have an o-ring. If I put RTV around it it doesnt leak, but the cap is kinda beat up anyway.
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Old Nov 4, 2009 | 10:53 AM
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Yeah the RTV will peel off of there once you unscrew it. I stuck a rubber "o" ring (out of an "o" ring kit) on my '89 cap...no more leak problems.

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Old Nov 4, 2009 | 11:02 AM
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Originally Posted by engle1147
Yeah the RTV will peel off of there once you unscrew it. I stuck a rubber "o" ring (out of an "o" ring kit) on my '89 cap...no more leak problems.


I thought about doing that too but like I said the cap has seen better days.
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Old Nov 5, 2009 | 01:03 PM
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Nice car, Kubs! Looks familiar.
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Old Nov 5, 2009 | 02:39 PM
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Originally Posted by HlhnEast
Nice car, Kubs! Looks familiar.
Thanks!
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