Gasket

[kadora]

hello
guys please help me I need to seal the space between cylinder and cyl. head
on my v twin model but i dont know how it is usually made.
On internet i found some information to cut gasket from 0,5 mm coper sheet ???
or you know easier way.
Thanks for your advices

 

[Cogsy]

Your local auto parts store may well stock gasket sheet which you can cut one out of. Alternatively, I've made gaskets for full size applications from the cardboard of cereal boxes.

However, I've just realised you need a head gasket and neither of these materials would be suitable, at least for a full sized application. I don't know if they'd work for a model, or if they'd just blow out. Sorry...

 

[windy]

Depending on if the head can be rotated on the cylinder and you have a spigot on the barrel you can do a double ground joint using fine valve seat grinding paste on the spigot and coarse on the wide face.
If it is an alloy head you might have to use a gasket.
On my flash steam engine the double ground joint works very well but my head is steel and barrels cast iron.
This type of ground joint is mentioned in Phil Irving's book Tuning for Speed
I think the drag racing engines use special O rings to seal the pressures they have in combustion.
In the UK some of the auto jumbles have stalls selling many grades of gasket materials.

Paul

 

[Mosey]

Depending on if the head can be rotated on the cylinder and you have a spigot on the barrel you can do a double ground joint using fine valve seat grinding paste on the spigot and coarse on the wide face.
If it is an alloy head you might have to use a gasket.
On my flash steam engine the double ground joint works very well but my head is steel and barrels cast iron.
This type of ground joint is mentioned in Phil Irving's book Tuning for Speed
I think the drag racing engines use special O rings to seal the pressures they have in combustion.
In the UK some of the auto jumbles have stalls selling many grades of gasket materials.

Paul

My local auto parts store has auto gasket material in a roll for about $2.00. Enough for about 50 engines?
Mosey

 

[Mike N]

I cut "O"ring grooves & install high temp "O"rings instead of gaskets all over my IC engines. Works Great!

 

[n4zou]

This will do the job.
Percy's High Performance/10 x 10 in. XX Carbon high temp gasket



http://www.autozone.com/autozone/ac...mp-gasket/_/N-25w7?itemIdentifier=889665_0_0_

 

[Mosey]

Goretex makes a gasketing material for aerospace and other engines. It is quite thick and very pricey. I have a sample sheet that I may try sometime.
Yes, the same guys who make water-repellant breathable ski jackets, etc.
Mosey

 

[kadora]

Thank you guys for your advices.
A question for Mike N
I cut "O"ring grooves & install high temp "O"rings instead of gaskets all over my IC engines. Works Great!
Your way of sealing the combustion chamber seems to me very easy
but could you describe high temperature O rings closer //what material ,
where to buy them, their thickness //
This method can use more of us as sealing solution.
thank you friends

 

[Goldflash]

I have used Teflon plumbers tape twisted into a string for spigot and socket type joints and if you have trouble holding it in place just a smear of high temp silicone sealer does the trick. Better still if you can get it is the yellow high temp Teflon gas thread tape its marginally thicker. I have used it on model aircraft engines for cylinder heads and exhausts and on hot air engines.

 

[DLM]

On my Holt engine i used .010 thick teflon sheet material and it has held up well.

Don

 

[Mike N]

A question for Mike N
I cut "O"ring grooves & install high temp "O"rings instead of gaskets all over my IC engines. Works Great!

*********************************************

I use silicone "O"Rings good to 425F
http://www.mcmaster.com/#o-rings/=lt3mdc

I use 1/16th thick & make the groove 1/16th wide & .050" deep
I have never had a leaker for heads or manifolds on my little hit & miss engines