Suzuki gt500 barrel

[Pmd31421]

Hi, can anybody advise me on best way to get a barrel off my GT500 .
One barrel came off easy , the other won’t budge and I don’t want to break anything .

[RhynoCZ]

Apply heat.

EDIT: And knock it around with a rubber mallet. A plain metal hammer and a piece of wood works as well. DO NOT try to pry it off with a screwdriver, under no circumstances! DO NOT be tempted to stick a screwdriver in the tiny gap between the cylinder and the crankcase (the mating surface), you'll chip something.
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[pepperami]

Slowly slowly catchy monkey!
Brute force and haste will break things.

I’m guessing that you have the head/s off? And can now see the piston stuck in the bore?
If it was mine , I would put a dash of diesel fuel down the bore and spread it around.
Then I’d leave it a week.
Whilst the diesel is doing its magic, I would find a piece of hardwood the same diameter as the bore.
Use hardwood as it is not to soft but still firm enough to transfer what you are going to do.
Put the wood in the bore and hit the wood with a lump hammer.
NOTwith all your might but short firm taps.
If you get a bit of movement, an extra squirt of penetrating oil will help.

This worked for me on an old Suzuki GT 250 I owned that had the same issue.
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[stinkwheel]

Is the piston seized or is the barrel just stuck to the crankcase?

If it's the latter, you can sometimes unscrew the studs by locking two nuts on them (maybe worth running some penetrating oil down the stud holes first and leaving it overnight). Then you can rotate the barrel to break the seal.
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[Tankie]

A good mixture for penetrating is a mix of ATF and acetone(cellulose Thinners) 50-50
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[A100man]

[stinkwheel]

[Pmd31421]

Thanks for all the tips guys , much appreciated.
It came of with copious amounts of penetrating oil down the stud holes and careful application of heat ......oh and a fair bit of swearing !!!!
I’ve another question , what is the standard bore size on a Gt500 ?

[Tankie]

70mm x 64mm stroke is standard
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Always learning, everyday is a school day

[A100man]

Lots of expert help on this forum too..

https://www.suzuki2strokes.com
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Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600, Skorpion, GT 250