Problems after a head gasket replacement

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white exec
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Re: Problems after a head gasket replacement

Post by white exec »

I don't have the figure for that. Someone here may be able to help.
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Paul-R
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Re: Problems after a head gasket replacement

Post by Paul-R »

I don't know if it's still available but Blue Hylomar was available in an aerosol which I used when I was rebuilding my Alfa Romeo engine. You could get an even coverage of the sealant that way.
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white exec
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Re: Problems after a head gasket replacement

Post by white exec »

I had no idea it was available (and still is) in aerosol form.
Could be good for larger/studded areas, with suitable masking and control of overspray.
Good one, Paul!
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Doo
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Re: Problems after a head gasket replacement

Post by Doo »

SMA207 wrote:
01 Jul 2021, 00:19
I'll get some. How tight do the bolts need to be I suspect I over did them and squeezed the sealant out!
I've done many heads, timing belts, water pumps in my time and generally, anything plastic or aluminium only requires around 12 to 15 Nm (Newton Metres) or approx 8 to 10 foot pounds. Check again after one hot to cool cycle.
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Re: Problems after a head gasket replacement

Post by SMA207 »

FINAL UPDATE - HOPEFULLY
I have tried 4 times to seal the thermostat housing to the head. The ebay housing would not seal with blue holymar, i bought a new one from Euro car parts for £39 it came with two paper gaskets. I thought this must be the reason because the old one and the ebay had no gaskets. I fitted it but it to leaked this time both oil and coolant! but the system appears to cool the engine.
I contacted peugeot for new gaskets with the idea that i would use blue hoylmar as well. They told me that only black locktite sealant should be used. I couldn't get any so i used another silicone engine sealant ( and lots of it) and so far after 300miles the system is sealed. I hope this info helps others with this problem - thanks
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white exec
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Re: Problems after a head gasket replacement

Post by white exec »

The professional (and OEM) liquid gaskets are usually polyurethane, not silicone, which tends to be too elastic and not adhesive enough.