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Q&A > General Tech Advice > spray gasket > Community Forums > Mustang Forum Australia - Mustang Tech

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gbx78
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hey guys

im about to put my timing cover back on with new gasket etc.. and then my new water pump with new gasket etc..

i noticed alot of guys online seem to use "spray" gasket for these situations..

any feedback on this? has anyone used them? are they good or bad? i have black rtv sealant which is quite thick and goopy and would imagine wouldnt go on too well for the timing cover and the spray type looks like the better way to go?

suggestions?

www.supercheapauto.com...9935#Cross


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gbx78
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i read alot of guys have lots of problems when using rtv gasket sealant on water pumps backing plates as it causes or makes a thick layer where it can leak and the instructions (on water pump) say NOT to use any sealant in between the backing plate and the pump but to use sealant between the backing plate and the timing cover ..

very confusing with lots of conflicting feedback


'You can never test fire too many times.' - Hybrid

'You can never have too many gauges' -
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Shaunp
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Spray on glue is called Hylomar it was originally made by Rolls Royce, I use it all the time, It's particularly good on head gaskets.


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gbx78
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Shaunp wrote
Spray on glue is called Hylomar it was originally made by Rolls Royce, I use it all the time, It's particularly good on head gaskets.


i did see that too.. is that the same as the permatex spray gasket? the hylomar is non-setting.. i would imagine with the pressure of the water going around you would want a setting gasket to stop leaks? or does it work the same?

www.supercheapauto.com...8035#Cross


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Shaunp
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The other glue you want is Yammy bond, now called 3 bond. this is what you glue bike engines together with the often have no gaskets. This is what we glue historic 2 stroke bike crank cases to gether with. It must be only applied to prefectly clean surface, wiped with thinners.


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Shaunp
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gbx78 wrote
Shaunp wrote
Spray on glue is called Hylomar it was originally made by Rolls Royce, I use it all the time, It's particularly good on head gaskets.


i did see that too.. is that the same as the permatex spray gasket? the hylomar is non-setting.. i would imagine with the pressure of the water going around you would want a setting gasket to stop leaks? or does it work the same?

www.supercheapauto.com...8035#Cross

Hylomar sets elastic it's blue in colour.


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gbx78
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ok

im using this as a guide for tips as i already know the process but want to make sure i dont get leaks!

at 20:20 he sprays a red gasket sealant and again at 21:50 for the waterpump..

not saying its correct but using it as a guide .. is this pretty much how i would use the hylomar?



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Shaunp
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I'd use 3 Bond grey. Orange is High temp works good on anealed copper head gaskets on blowen engines with oringed blocks


Last edited by Shaunp on Wed Mar 13, 2013 9:29 am; edited 1 time in total

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Shaunp
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The secret is make sure everything is supa clean no oil on the faces, wipe them with thinners, then pretty much anything will work.


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gbx78
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ok cool thanks mate!


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Shaunp
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George at the factory most gaskets just got a coat of Vas to hold them in place, the gasket is really the seal, use 3 bond and Hylomar spray, you won't go wrong. spray is neat


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gbx78
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Shaunp wrote
George at the factory most gaskets just got a coat of Vas to hold them in place, the gasket is really the seal, use 3 bond and Hylomar spray, you won't go wrong. spray is neat


ok thanks mate.. yeah i did read that the gasket is the seal which i guess is why the instructions for the waterpump say NOT to use anything between the pump and its backing plate as they are new flat surfaces and the gasket is all thats required for a seal. but being timing covers can be imperfect or have pits or unseen grooves/dips they suggest to use some form of gasket sealant


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Exhausted
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You can buy tubes of Hylomar , don't overdo it. A thin 'skin' is all that is required. Too much & it oozes between out from the sealing faces & can work it's way into the sump & collect over the oil pickup. As Shaunp says & you will be fine.


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gbx78
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Exhausted wrote
You can buy tubes of Hylomar , don't overdo it. A thin 'skin' is all that is required. Too much & it oozes between out from the sealing faces & can work it's way into the sump & collect over the oil pickup. As Shaunp says & you will be fine.


cool thanks mate, i shall tackle this next week


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