| [ Total Views: 657 | Total Replies: 16 | Thread Id: 48499 ] |
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 oval TOFU
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| posted on January 31st, 2006 at 10:23 AM |
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rocker cover gaskets sealant
I've searched through the forum but couldn't find my answer..
I've got new rocker cover gaskets of the cork/rubber variety and want to know what kind of sealant I should be using between the gasket and rocker
cover. I've got a tube of Blue RTV Silicone Gasket Maker but i'm not sure it'll cope with the heat (though it does say on the tube it's "not
recommended for head gaskets" for 'normal' cars)
Cheers
...and Robert's ya father's brother...
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 vw54
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| posted on January 31st, 2006 at 10:41 AM |
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Use a bit of plin old grease rub it to both surfaces
You dont need the blue crap make sure both surfaces are clean and flat before fitting the cover n gasket
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oval TOFU
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| posted on January 31st, 2006 at 11:01 AM |
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Thanks Dave - a 'Niagara Falls' of information as usual!
...and Robert's ya father's brother...
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firefly
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| posted on January 31st, 2006 at 10:43 PM |
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Silicon gasket crap it not good at the best of times. The biggest issues are that most users of silicon think that more is better. what actually
happens is that the silicon squeezes out on both the insides and the outsides. while people can wipe the outside "spillage" the inside ones
remain. Over time this gain to be hard and drops off into the oil passages. and therefore has the ability to block oil paths. Can be very bad
stuff.
If you feel you must use a sealant on the surface then try permatex aviation cement (number 3). This remains liquid (just like the grease trick) but
uses a adhesive propert which means it can seal the surfaces slightly better than the grease. it does not go hard liek the silicon, and desolves liek
teh grease too. the product is unreal. I have fixed all leaks of many of my cars with this stuff. but does relie on the surface being clean and
servicable.
Cheers
PS: Do not use number 4 product as this is bearing type compond, and thus will never allw teh car to leak again, but will also make sure you can never
get teh parts seperated again as this one really glues the two surfaces together PERMANTELLY!!) |
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oval TOFU
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| posted on January 31st, 2006 at 11:44 PM |
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great info that. I wan wondering if a company like Permatex made some non-curing compound like the No.3 stuff. I ended up using High Temp bearing
grease instead of the normal Lithium grease coz being on the heads, it's gonna get pretty warm... I fast idled the car for 15 mins today and there's
no leaking so far.. I'm hoping I won't have to replace those push rod tubes afterall!
...and Robert's ya father's brother...
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vw54
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| posted on February 1st, 2006 at 06:09 AM |
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| Quote: |
what actually happens is that the silicon squeezes out on both the insides and the outsides. while people can wipe the outside "spillage" the inside
ones remain. Over time this gain to be hard and drops off into the oil passages. and therefore has the ability to block oil paths
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How true..... I had this happen bout 30 years ago on a fuel tank sender unit except the silicon went into the fuel line took me ages to work out
the problem
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barls
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| posted on February 1st, 2006 at 03:09 PM |
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contact cement is great for holding gaskets in place
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helbus
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| posted on February 1st, 2006 at 03:49 PM |
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What are the thoughts on rubber type rocker cover gaskets?
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oval TOFU
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| posted on February 1st, 2006 at 07:17 PM |
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| Quote: | Originally
posted by Helbus
What are the thoughts on rubber type rocker cover gaskets?
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rubber and cork gaskets? or just straight rubber?
...and Robert's ya father's brother...
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kombikim
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| posted on February 1st, 2006 at 08:23 PM |
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Empi have reusable neoprene gaskets listed
when I got my bolt on covers they came with rubber/cork gaskets which seem to have stayed in as new condition except that the bit along the top drops
down in the middle now, making their "fixed in position" seal rather dubious
[ Edited on 1-2-2006 by kombikim ]
Please, I need drivers side window regulator (winder mechanism) for my '54  |
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helbus
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| posted on February 1st, 2006 at 09:21 PM |
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| Quote: | Originally
posted by oval TOFU
| Quote: | Originally
posted by Helbus
What are the thoughts on rubber type rocker cover gaskets?
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rubber and cork gaskets? or just straight rubber?
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Just pure black 'rubber' or maybe it is neoprene? Reusable - cool
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OZ Towdster
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| posted on February 1st, 2006 at 09:58 PM |
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I agree as above a little grease goes a long way for tappet cover gaskets and in regard to pushrod tubes i will ONLY use silicone pushrod tube seals
and seat them in grease only and NO oil leaks for years Guarentied.
PS well those bits anyway
Don't let body work get in the way of real suspension travel
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1303Steve
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| posted on February 1st, 2006 at 09:59 PM |
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Hi
I never used use any cement at all, nephrene/cork gaskets. Just make sure the sealing surface in the cover and on the head are very clean and that the
rocker cover clips are square, they tend to bend over the years.
Steve
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hellbugged
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| posted on February 1st, 2006 at 10:01 PM |
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spray adhesive for me, just to hold em in place while i snap em on.
its easy to get off the next time round too.
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oval TOFU
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| posted on February 1st, 2006 at 11:57 PM |
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wouldn't neoprene jsut perish or melt after tolerating the heat from the heads?
...and Robert's ya father's brother...
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vw54
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| posted on February 2nd, 2006 at 06:06 AM |
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Why use rubber when the origional is cork n cheap as chips anyway that is on a air cooled engine Water cooled may use different
As Steve said make sure your rocker cover is flat n square and taht the clips are on the right way around. many people fit them on wrong
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ACE_76
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| posted on February 2nd, 2006 at 08:41 AM |
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I've always glued them in with Selley's Kwick-Grip, the yellow rubber-based contact adhesive. Just run a thin layer of the glue around the inside
of the clean rocker cover, seat the new gasket in, and let dry for at least 15min. Then smear a layer of any ordinary wheel bearing grease around the
top side of the gasket & give a wipe around the joining surface of the head... This takes a little time, but you can usually remove and replace them
Many times with only a quick wipe, and another smear of grease to re-seal them.
I only once tried the new method of just popping a new gasket in and whacking the cover on. Never again! I lost all the oil (till light came on!)
from both sides in the first trip! Maybe there's a knack to it... |
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