Which gasket sealant for Yanmar

[Polly1]

I took a few parts of my Yanmar 2GM20 yesterday such as the thermostat housing and I dont have a replacement gasket. It now leaks a bit of water. I have some blue hylomar that I am using on a vw engine to seal oil leaks. What have forumites used on these engines (apart from buying a new gasket).
Cheers

 

[sailorman]

I took a few parts of my Yanmar 2GM20 yesterday such as the thermostat housing and I dont have a replacement gasket. It now leaks a bit of water. I have some blue hylomar that I am using on a vw engine to seal oil leaks. What have forumites used on these engines (apart from buying a new gasket).
Cheers

you have the very product to hand & why not make a paper gasket

 

[Spyro]

I once used the back cover of a glossy magazine to make a temp paper gasket, it stayed there 2 years without a drip before I replaced the impellor and used a proper gasket.

 

[tinkicker0]

I took a few parts of my Yanmar 2GM20 yesterday such as the thermostat housing and I dont have a replacement gasket. It now leaks a bit of water. I have some blue hylomar that I am using on a vw engine to seal oil leaks. What have forumites used on these engines (apart from buying a new gasket).
Cheers

I swear by Threebond 1215.

 

[RobinBirch]

+1 for blue hylomar

 

[Halo]

I swear by Threebond 1215.

+1

Also the Yanmar SD20 Manual specifically advises using this product

 

[Topcat47]

Blue Hylomar is good enough for gas turbines, nothing a Yanmar can throw at it should be a problem for it. I've used it on metal/metal successfully, you don't have to have a paper gasket. Just follow the instructions.

 

[vyv_cox]

+1

Also the Yanmar SD20 Manual specifically advises using this product

And no doubt Threebond pay handsomely for the privilege! If it's the same as automotive oil recommendations, the manufacturers first have to satisfy any technical specification. They then negotiate the terms under which they might be recommended, e.g. in workshop manuals, owners' manuals, on the filler cap, etc. Everything has its price.

Hylomar Blue is undoubtedly one of the premier products in this area but for a thermosata housing almost anything stocked by a local car parts shop will do. My preference would be to cut a new gasket and not use any sealant.

 

[doug748]

This man has the griff on gasket making:

http://www.youtube.com/watch?v=NDOcR592-Fw&list=PLD18277896F0BC1C6&index=16

Cornflake packets also work very well, a thin layer of your goo would do no harm. If it keeps oil in a ald British bike, all else is easy, inc jet engines.

 

[Halo]

And no doubt Threebond pay handsomely for the privilege! If it's the same as automotive oil recommendations, the manufacturers first have to satisfy any technical specification. They then negotiate the terms under which they might be recommended, e.g. in workshop manuals, owners' manuals, on the filler cap, etc. Everything has its price.

Hylomar Blue is undoubtedly one of the premier products in this area but for a thermosata housing almost anything stocked by a local car parts shop will do. My preference would be to cut a new gasket and not use any sealant.

Very true but that does not stop forumites spending ages looking for obsolete oils to match the manual recommendations !

 

[sailorman]

Very true but that does not stop forumites spending ages looking for obsolete oils to match the manual recommendations !

 

[wotayottie]

I took a few parts of my Yanmar 2GM20 yesterday such as the thermostat housing and I dont have a replacement gasket. It now leaks a bit of water. I have some blue hylomar that I am using on a vw engine to seal oil leaks. What have forumites used on these engines (apart from buying a new gasket).
Cheers

silicone instant gasket.

 

[Mel]

Make your own gsket from stiff paper such as brown envelope or similar then simply put grease on both sides of the joint.

Has worked fine on my 1GM10 for many years and many water side gaskets,

 

[gavin400]

Can this method be used to make a cylinder head gasket for a mb1? - as several people have suggested that once this gasket goes then the engine is pretty much dead

 

[Mel]

Cylinder head gaskets run at high temperature and are therefore made of a composite material that can handle the heat

 

[savageseadog]

Sikaflex

 

[Polly1]

Thanks for the replies

 

[Davegriff]

Can this method be used to make a cylinder head gasket for a mb1? - as several people have suggested that once this gasket goes then the engine is pretty much dead

Don't know what an mb1 is, but you could try a thin sheet of copper as a substitute head-casket.

 

[Topcat47]

Can this method be used to make a cylinder head gasket for a mb1? - as several people have suggested that once this gasket goes then the engine is pretty much dead

If you're going to use copper, you must stamp the holes with hollow punches. Once you've done this and cut the shape, anneal the copper before fitting by heating it to red heat and allowing to cool. I don't recommend quenching but I can't find the relevant chapter in my handy workshop practice handbooks so I've not been able to remember why.

Many head gaskets are made from some type of fibrous material like cardboard (but definitely NOT real Cardboard). I've used them on my Morris Minor when the copper composite gaskets have been unobtainable. This material can be worked as described in the u-tube clip but I don't have a source. Perhaps Viv Cox may know the stuff as he's more current than I.

This looks like the stuff http://www.ebay.co.uk/itm/HEAD-GASKET-AND-MANIFOLD-MATERIAL-A4-SHEET-SIZE-X-2-/230701954075

No connection though

 

[Mel]

My old Triumph twin motorcycle had a copper head gasket as standard.
It was simply heated to cherry red and then allowed to cool in the air.
This slow cooling caused the copper to anneal which means it is soft.
I always put grease on both sides and pulled up the head bolts as normal.
Old fashoned but worked well!