Home-made gasket for 2-stroke motor

On Wed, 19 Jul 2006 22:18:50 +0100, Guy King <guy.king.DeleteThis@zetnet.co.uk>
wrote:

>True, but this isn't a head gasket. It's half way down the leg.

Correct. Or, at least, 1/8 the way down the leg. It's not gonna
get as hot as a head gasket, that's for sure.

Al D
 >> Stay informed about: Home-made gasket for 2-stroke motor 

"Dave Plowman (News)" <dave.RemoveThis@davenoise.co.uk> wrote in message
news:4e48ff15dbdave@davenoise.co.uk...
> In article <e9lei3$jv9$1@news.freedom2surf.net>,
> Doki <mrdoki.RemoveThis@gmail.com> wrote:
>> I've heard of bathroom silicone being used quite successfully on car
>> exhausts.
>
> There is a silicone sealer for exhausts, but I'd assumed it was to a
> different spec to the domestic stuff - although of course not all joints
> on an exhaust get super hot.

I've read of gasketless exhausts in the comics where people have uses
silicone throughout, and apparently it lasts fairly well.
 >> Stay informed about: Home-made gasket for 2-stroke motor 

Al Deveron <wmth2581.TakeThisOut@aol.com> wrote in message
news:p6dsb2p0m2046r7cf23jr9dkv2m38m9ijc@4ax.com...
>
> I am rebuilding a 1988 Evinrude Junior 2hp outboard motor. I have cut
> myself a paper gasket to go between the leg and the upper casing. The
> gasket needs to be gas-tight for hot exhaust gasses. There are also a
> couple of small holes in the gasket for cooling water channels.
>
> The gasket paper I used is 0.6mm thick. My question is: should I smear
> anything on the gasket before reasseembly? I have some lithium grease.
> I also have some blue silicone gasket compound, and some silicone
> grease. Which of these is most suitable, if any?

Blue Hylomar is good its non hardening and will allow the join to be
dismantled easily.
Red Hermetite is semi-hardening, probably best for something that is under
pressure and you don't need to dismantle often, it's a S*%T to remove from
alloy mating surfaces
Loctite 5926 is a silicone flange sealant probably best suitable for your
need.
or for this job just grease would work ok.



-
 >> Stay informed about: Home-made gasket for 2-stroke motor 

On Wed, 19 Jul 2006 20:05:34 +0100, AJH <sylva RemoveThis @despammed.com> wrote:

>If it's anything like a Johnston outboard I reckon a normal engine
>plastic gasket would work as the water gets mixed with the exhaust and
>thus the temperature is low.

Yeah, the temperature won't get terribly hot, since the joint is in
alloy which is connected directly to more alloy that is getting
dragged through cold sea water. Spares are rather hard to come by.
Hence my cutting a paper gasket. I ended up using Golden Hermatite,
and will keep my noodles crossed.. I figger that since Golden
Hermatite is still on the market after about 40 years, it must be OK.

In my day, there was Red Hermatite, Green Hermatite and Golden
Hematite. Red Hermatite was the sh*t we all avoided like the plague.
Golden Hermatite was useful. We never figgered out what Green
Hermatite was for. Or perhaps we did, but kept forgetting!

Al D
 >> Stay informed about: Home-made gasket for 2-stroke motor 

Al Deveron wrote:

> On Wed, 19 Jul 2006 20:05:34 +0100, AJH <sylva.DeleteThis@despammed.com> wrote:
>
>
>>If it's anything like a Johnston outboard I reckon a normal engine
>>plastic gasket would work as the water gets mixed with the exhaust and
>>thus the temperature is low.
>
>
> Yeah, the temperature won't get terribly hot, since the joint is in
> alloy which is connected directly to more alloy that is getting
> dragged through cold sea water. Spares are rather hard to come by.
> Hence my cutting a paper gasket. I ended up using Golden Hermatite,
> and will keep my noodles crossed.. I figger that since Golden
> Hermatite is still on the market after about 40 years, it must be OK.
>
> In my day, there was Red Hermatite, Green Hermatite and Golden
> Hematite. Red Hermatite was the sh*t we all avoided like the plague.
> Golden Hermatite was useful. We never figgered out what Green
> Hermatite was for. Or perhaps we did, but kept forgetting!
>
> Al D
>
The word is figured, I think?

Dave
 >> Stay informed about: Home-made gasket for 2-stroke motor 

The message <GcudnXZWE5EsNyPZnZ2dnUVZ8sydnZ2d.DeleteThis@bt.com>
from Dave <davenpat.DeleteThis@btopenworld.com> contains these words:

> We never figgered out what Green
> > Hermatite was for. Or perhaps we did, but kept forgetting!

> >
> The word is figured, I think?

Nah - "figgered" is when you sit down with a cup of tea and a packet of
fig rolls to have a good long think about something.

--
Skipweasel
Pay no attention to that man behind the curtain.
 >> Stay informed about: Home-made gasket for 2-stroke motor 

Guy King wrote:
> The message <GcudnXZWE5EsNyPZnZ2dnUVZ8sydnZ2d DeleteThis @bt.com>
> from Dave <davenpat DeleteThis @btopenworld.com> contains these words:
>
>> We never figgered out what Green
>>> Hermatite was for. Or perhaps we did, but kept forgetting!
>
>> The word is figured, I think?
>
> Nah - "figgered" is when you sit down with a cup of tea and a packet of
> fig rolls to have a good long think about something.
>
Figgered is when you spend hours on the loo after eating a whole packet
of dried ones.

Apricotted is even better. Never mind Sennapods...
 >> Stay informed about: Home-made gasket for 2-stroke motor 

"Dave Plowman (News)" <dave.DeleteThis@davenoise.co.uk> wrote in message
news:4e490c172bdave@davenoise.co.uk...
> In article <313030303432373944BE8B8A11.DeleteThis@zetnet.co.uk>,
> Guy King <guy.king.DeleteThis@zetnet.co.uk> wrote:
>> > I've never seen an exhaust gasket made of paper. They're usually some
>> > form of metallised material - or copper, etc.
>
>> It's quite common in outboard legs - after all the exhaust is quite cool
>> by the time it gets down there.
>
> Ah - ok. Boats are somewhat foreign to me.
>
> For the OP, my favourite jointing compound is Blue Hylomar. Easy to
> remove when required with cellulose thinners.
>

Yes, it's been around a long time. Used by Rolls Royce. It never sets hard.

Sylvain.

> --
> *Many people quit looking for work when they find a job *
>
> Dave Plowman dave.DeleteThis@davenoise.co.uk London SW
> To e-mail, change noise into sound.
 >> Stay informed about: Home-made gasket for 2-stroke motor 

On Wed, 19 Jul 2006 20:05:34 +0100, AJH <sylva.RemoveThis@despammed.com> wrote:

>Envirograf silicone fireproof sealant is rated to a high temperature
>but it's really for brickwork to steel. I have an unopened tube that's
>past its sell by date if the op is near NW Surrey.

Thanks for the kind offer, but I am too far away, and I already have
some silicone gasket compound.

AL D
 >> Stay informed about: Home-made gasket for 2-stroke motor 

On Wed, 19 Jul 2006 22:13:51 GMT, "Mark" <Mark.RemoveThis@127.0.0.1> wrote:

>or for this job just grease would work ok.

Thanks. That might even be the best option, since it would be less
likely to block up the 1/8" water channels that pass throught the
gasket... I ended up using gasket compound, and am now worried that
some of it might have squeezed out and blocked those water channels.

Al D
 >> Stay informed about: Home-made gasket for 2-stroke motor 

On Wed, 19 Jul 2006 22:57:10 +0100, Dave <davenpat RemoveThis @btopenworld.com>
wrote:

>The word is figured, I think?

I figger so.

Al D
 >> Stay informed about: Home-made gasket for 2-stroke motor 

The message <1153396809.15501.1.TakeThisOut@damia.uk.clara.net>
from The Natural Philosopher <a.TakeThisOut@b.c> contains these words:

> > Nah - "figgered" is when you sit down with a cup of tea and a packet of
> > fig rolls to have a good long think about something.
> >
> Figgered is when you spend hours on the loo after eating a whole packet
> of dried ones.

> Apricotted is even better. Never mind Sennapods...

May I interest you in this two pound piece of sultana and date flapjack?

--
Skipweasel
Pay no attention to that man behind the curtain.
 >> Stay informed about: Home-made gasket for 2-stroke motor 

On Wed, 19 Jul 2006 22:57:10 +0100, Dave <davenpat.DeleteThis@btopenworld.com>
wrote:

>The word is figured, I think?

BTW, you shouldn't put a question mark on the end of a statement...
)

Al D
 >> Stay informed about: Home-made gasket for 2-stroke motor