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Gaskets and silicon sealer (Read 1463 times)
Martin Imber
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Gaskets and silicon sealer
18. Jul 2006 at 22:18
 
Has anyone ever tried this, I read about it years ago and I used the technique on my old Sunbeam as one end manifold stud had sheared - it was fine - only had to change gasket when lifting the head.

I used it on the CD when selling due to a broken stud and it worked then.

SO what are the opinions?
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JasonH
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Re: Gaskets and silicon sealer
Reply #1 - 19. Jul 2006 at 11:02
 
I presume you proposing silicon sealant on the inlet manifold rather than the exhaust manifold!

Not a great fix, but I suspect it would work.
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nixoro
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Re: Gaskets and silicon sealer
Reply #2 - 19. Jul 2006 at 11:08
 
Never really thought of using silicon sealant, I just used the usual sealant when I did my manifold gasket.

Recommended at the parts desk.

Seems to be ok even with a missing stud.

HTH

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« Last Edit: 19. Jul 2006 at 11:58 by nixoro »  
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Marks DTM Calib
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Re: Gaskets and silicon sealer
Reply #3 - 19. Jul 2006 at 11:28
 
Sealent on the manifold.....what sealent.....

Be careful with silicon sealent as it can attack some metals (i.e. copper).....
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Martin Imber
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LPG Omega V6 - Keyfobs
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Re: Gaskets and silicon sealer
Reply #4 - 19. Jul 2006 at 11:56
 
JasonH wrote on 19. Jul 2006 at 11:02:
I presume you proposing silicon sealant on the inlet manifold rather than the exhaust manifold!

Not a great fix, but I suspect it would work.


Well it worked for the 2.0CD exhaust and the manifold gasket for the Sunbeam - read it somewhere - I'll have a search tonight
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The other tuned 2.6. DIY LPG, towbar, upgrade ICE & Wing Spoiler, Air shocks, Eibach Pro Springs, Poly WB bushes, WIM setup, HID conversion, 3.0 cams, ported ect.
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JasonH
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Re: Gaskets and silicon sealer
Reply #5 - 22. Jul 2006 at 17:49
 
Tell me more.

Had a go at replacing my passenger side exhaust manifold gasket today (without removing the engine) found one stud broken off and then had to call a halt when one other stud refused to budge and eventually rounded off.

Here's the cheeky little blighter:

...

As I'm now going to need the full engine out treatment (which I can't do myself) silicon sealant seems most attractive.

Did you fill the stud hole?

Did you put a bead round the edge?

Or did you lift the manifold away and use the silicon like a gasket?
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Martin Imber
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Re: Gaskets and silicon sealer
Reply #6 - 22. Jul 2006 at 18:25
 
I put a thin bead around each hole both sides of the gasket. Then quickly bolted down before it dried - don't know how long it will last
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The other tuned 2.6. DIY LPG, towbar, upgrade ICE & Wing Spoiler, Air shocks, Eibach Pro Springs, Poly WB bushes, WIM setup, HID conversion, 3.0 cams, ported ect.
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JasonH
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Re: Gaskets and silicon sealer
Reply #7 - 22. Jul 2006 at 20:10
 
OK - thanks.

In my case I can't get the manifold off....I've also just read that silicon sealant can poison the lamba sensors - so not sounding quite so good now  Sad
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