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Cam cover - on which surface to apply sealant? Topic is solved

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j-dawg
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Cam cover - on which surface to apply sealant?

Post by j-dawg »

Got me a big squeezy tube of anaerobic sealant and a foam roller to reinstall the top half of my cylinder head. One thing that is not consistent in all the instructions I've read on the intertubes: should one apply the sealant to both surfaces that will be in contact, just the top half, just the bottom half, ?????

My inclination is to put sealant on the top half and leave the bottom half clean, where I will install the spark plug seal o-rings. I suspect the surfaces are clean and flat enough that it doesn't matter either way, but if anyone with experience can chime in, that'd be appreciated.
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misha
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Re: Cam cover - on which surface to apply sealant?

Post by misha »

Bottom surface but make sure that you install it in 15 minutes after the sealant is applied.After that it isn't usable anymore.
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Re: Cam cover - on which surface to apply sealant?  Topic is solved

Post by rspi »

I always apply the sealant to the cover. It is anaerobic so there is no rush to install the cover. It will NOT dry as long as air is on it. Two hours, 6 hours, 48 hours, doesn't matter as long as it is kept clean. I usually don't apply to much, don't want it clogging the small oil passages. Apply it like a thick coat of paint. The cover almost seals itself, the sealant just seals the deal.

One of those 1.69 oz tubes will do 2 or 3 covers.
Last edited by rspi on Mon Mar 13, 2017 11:53 am, edited 2 times in total.
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Re: Cam cover - on which surface to apply sealant?

Post by beigg »

misha wrote:Bottom surface but make sure that you install it in 15 minutes after the sealant is applied.After that it isn't usable anymore.
How so? The anaerobic stuff will never set to dry until both surfaces are tightened down.
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Re: Cam cover - on which surface to apply sealant?

Post by rspi »

Start at 15:15

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Re: Cam cover - on which surface to apply sealant?

Post by cn90 »

rspi wrote:..It is aerobic so there is no rush to install the cover...
@rspi, you need to add a prefix "an" to that word. It should be anaerobic.
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Re: Cam cover - on which surface to apply sealant?

Post by misha »

beigg wrote:
misha wrote:Bottom surface but make sure that you install it in 15 minutes after the sealant is applied.After that it isn't usable anymore.
How so? The anaerobic stuff will never set to dry until both surfaces are tightened down.
Don't know....that's what i was told at "stealership" a long time ago.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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Re: Cam cover - on which surface to apply sealant?

Post by beigg »

misha wrote:
beigg wrote:
misha wrote:Bottom surface but make sure that you install it in 15 minutes after the sealant is applied.After that it isn't usable anymore.
How so? The anaerobic stuff will never set to dry until both surfaces are tightened down.
Don't know....that's what i was told at "stealership" a long time ago.
They're just hoping to stealer more of your monies if you believed them...
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Re: Cam cover - on which surface to apply sealant?

Post by misha »

Not me....i stopped to believe in them back in 2002. ;)
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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Re: Cam cover - on which surface to apply sealant?

Post by MadeInJapan »

I have some anaerobic sealer in a tray along with the little roller all in a plastic bag that's been there for over a year and it can still be used because it's still very tacky.
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