Remove an old gasket - how?

[Motu]

- alloy.... approach with caution...

Alloy is not aluminium.It's the other shit it's alloyed with that will disappear in fizzing bubbles.So long as it's quality castings,it should be ok....this is a quality bike I'm sure.....

[Ixion]

Always found a gas axe does a good job of getting rid of old gaskets. Especially on magnesium cases

[cs363]

And - in some cases - alloy.... approach with caution...

Alloy is not aluminium.It's the other shit it's alloyed with that will disappear in fizzing bubbles.So long as it's quality castings,it should be ok....this is a quality bike I'm sure.....

Well regardless of the metal, and being a Hyosung which whilst Korean seem to be improving in leaps and bounds quality wise, I think the key here is caution if using substances like this.
The mere fact that there are so many variations of alloys and also formulations for oven cleaners would make me cautious - many oven cleaners use sodium hydroxide (caustic soda) as a main ingredient, this is also the main ingredient of some drain cleaners which also use aluminium flakes to create the churning action (reaction of these two when added to water) that clears drains...

Here's a sad tale of one guy that used oven cleaner on his HD:

http://hdforums.com/forum/detailing/...nightmare.html

Always found a gas axe does a good job of getting rid of old gaskets. Especially on magnesium cases

conjures up quite a picture....


Anyway, to summarise....always use caution when using unfamiliar chemicals on your bike whatever they are!

[Paul in NZ]

Alloy is not aluminium.It's the other shit it's alloyed with that will disappear in fizzing bubbles.So long as it's quality castings,it should be ok....this is a quality bike I'm sure.....

Possibly - depends on the oven cleaner. I was going to say aluminium but until you spelt it I waus havin trouble... Often there are specific warnings on the can about aluminium

[Motu]

The genuine Mitsubishi top end cleaner for GDI engines is basically oven cleaner - we spray a whole can down the throttle body,and leave it there over lunch.It foams and stinks just like Mister Muscle....and I know engine reconditioners use oven cleaner to clean GDI heads,pistons and manifolds.But obviously the alloys Mitsubishi use in GDI engines are oblivious to oven cleaner.

Use everything with caution,blah,blah,blah.I remember the the Repco rep who demonstrated the latest thing - CRC gasket cleaner.He held the can up to the gasket and pushed the nozzle - he had it aimed wrong and it went straight into his eye.From his screaming reaction I got the impression it was pretty strong stuff.

[classic zed]

The genuine Mitsubishi top end cleaner for GDI engines is basically oven cleaner - we spray a whole can down the throttle body,and leave it there over lunch.It foams and stinks just like Mister Muscle....and I know engine reconditioners use oven cleaner to clean GDI heads,pistons and manifolds.But obviously the alloys Mitsubishi use in GDI engines are oblivious to oven cleaner.

Use everything with caution,blah,blah,blah.I remember the the Repco rep who demonstrated the latest thing - CRC gasket cleaner.He held the can up to the gasket and pushed the nozzle - he had it aimed wrong and it went straight into his eye.From his screaming reaction I got the impression it was pretty strong stuff.

I emptied about 4 cans of oven cleaner into the inlet manifold of a V6 GDI Pajero to clean the damn thing. What a pile of crap that engine is

Iv never seen an engine build up so much oily gunge in the manifold and inlet runners

[The Pastor]

the stripper (oven cleaner) and a toothbrush and a scraper work well.

dont use pointy shit to scratch it off, as you'll be scratching the case rather than the gasket. Still nothing hylomar cant fix (must get around to replacing my 80% hylomar gasket one day...)

[scumdog]

Here's a sad tale of one guy that used oven cleaner on his HD:


conjures up quite a picture....


Anyway, to summarise....always use caution when using unfamiliar chemicals on your bike whatever they are!

Heard of a guy 'disposing' of a pair of alloy cylinder heads in a caustic bath!!

He left them there for a day or two and only recovered valves, valve seats and valvesprings and that was about it!!

[CookMySock]

Ok I got me a can of Gasket Remover from Repco. There is a big red warning on the tin about how quickly it removes paint. They are NOT JOKING AROUND when they use the word "instant." Be careful with this shit. Anyway, it took the gasket off like it was never there. Good stuff.

I didn't test the oven cleaner.

Thanks everyone.


Steve

[LBD]

Take the bulk of with the stanley knife, careful not to go through to the aluminum, Then lay a sheet of fine wet and dry on an flat surface, ie glass or granite, place gasket face down on sandpaper and move in figure 8.

Keeps the gasket face dead flat.

Don't use a rotary wire brush, this damages soft aluminum faster than you can look at the damage and say Bugger.

Caution with strippers, read instructions carefull regading use on Aluminum...some are suitable.

[Max Preload]

Take the bulk of with the stanley knife

I just use the blade and drag it across the face to finish rather than try to get the knife under the gasket and cut it off.

[CookMySock]

Take the bulk of with the stanley knife, careful not to go through to the aluminum, Then lay a sheet of fine wet and dry on an flat surface, ie glass or granite, place gasket face down on sandpaper and move in figure 8.

Stuff that. That would have taken hours.

Caution with strippers, read instructions carefull regading use on Aluminum...some are suitable.

Yes indeed. No warning about aluminium on this stuff.

I just use the blade and drag it across the face to finish rather than try to get the knife under the gasket and cut it off.

Thats what I tried. Bits of the gasket were coming off with shiny streaks of aluminium in them. Not good.

Trust me, this gasket stripper shit made the near-impossible into the trivial.

Steve

[kevfromcoro]

Ok I got me a can of Gasket Remover from Repco. There is a big red warning on the tin about how quickly it removes paint. They are NOT JOKING AROUND when they use the word "instant." Be careful with this shit. Anyway, it took the gasket off like it was never there. Good stuff.

I didn't test the oven cleaner.

Thanks everyone.


Steve

Watch that stuff... does a good job..
i use it all the time at work.
dont get it in your eyes.
melted the plastic lens of my safety glasses.

[CookMySock]

[...] dont get it in your eyes. melted the plastic lens of my safety glasses.

I bet. It's spooky enough just watching it come out of the can... fizz fizz fizz.. o.O !

Steve

[Max Preload]

Thats what I tried. Bits of the gasket were coming off with shiny streaks of aluminium in them. Not good.

I can't see how - it's not cutting, it's scraping.