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trubluhq Offline
#1 Posted : Sunday, 19 March 2006 1:57:45 AM(UTC)
trubluhq

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Hi folks,

Just about to put the head back on the red 253.

What is the best method to seal it ? Is it the gasket only, or gasket plus a sealant on both sides ? It a sealant is to be used, what brand works ? I have a few types here.

And silastic from and rear seals too. I know those buggers leak.

Thanks in advance John
ozchevy Offline
#2 Posted : Sunday, 19 March 2006 6:29:47 PM(UTC)
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John,
If I was to use a sealant on any motor part, then it would be "Hilomar"
Let me warn you though - it isn't cheap.
Mercedes use it on all their Diesels, and it's probably the best product out there for the type of application your after.
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#3 Posted : Sunday, 19 March 2006 7:11:07 PM(UTC)
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John

I never use anything on the head gaskets but I only ever use monotorque brand. You will find a bit of corrosion around the water jackets on the inlet manifold. I use slow setting 24 hour araldite. Just smear it around the water jackets on bo
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#4 Posted : Sunday, 19 March 2006 7:58:03 PM(UTC)
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John

Head gaskets don't usually have a sealer on them and this is usually written on them or on the packet they come in.

If you are ever in doubt about gaskets just ring the manufacturer. All quality gaskets will have the manufacturers name on t
trubluhq Offline
#5 Posted : Monday, 20 March 2006 6:28:39 AM(UTC)
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Hi all,

Well I have done the job now ! Intake manifold is on and torqued up. I got some LOCKTITE BLUE, but also had some LOCKTITE RED. So i went with the RED on the rear and front int manifold seals. The kits come with cork - eeek. I hope the beads of
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#6 Posted : Monday, 20 March 2006 9:07:42 AM(UTC)
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Red's a good choice, goes faster...nah serious, it's a good multi use sealant. I did a mate's 308 inlet manifold that had heap's of pitting around the water ports and used Grey ThreeBond as this is what we used all the time on bikes. The Loctite red shoul
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#7 Posted : Wednesday, 22 March 2006 6:45:09 AM(UTC)
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I have been doing up V8's for years, and have worked under some very smart bosses. The valley end seals for 308's, throw them in the bin! I use a 1/2 inch high bead of silicon along the horizontal block surface to seal the manifold up. Let it tack up f
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#8 Posted : Wednesday, 22 March 2006 7:00:23 AM(UTC)
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won't silicon break down and possibly end up clogging up oil galleries? not saying you can't use it, but i've only ever used proper sealant...urban myth or not?
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