 Seized Piston Rings, Best Method to Remove Piston |
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| SteveNMaine |
 Oct 13 2025, 12:06 PM
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#1
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Member  Group: Members Posts: 86 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None  |
I recently started a rebuild on a seized 1.8. I found that moisture has seized the rings and the exhaust valve on #2 cylinder. The piston is seized near the top of the exhaust stroke.
Any suggestions to free up the piston rings? I have heated the top of the piston, used penetrating oil, tapped with a mallet, etc. So far, no joy. |
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| Ishley |
Oct 13 2025, 12:45 PM
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#2
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Member Group: Members Posts: 286 Joined: 4-October 21 From: Clarendon Hills Il Member No.: 25,957 Region Association: Upper MidWest 
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You may have to crack the case open… unbolt all the rods and slide the whole thing out… piston, rod and barrel. Depending where the crank sits… the rod bolts might be a tough reach. Likely it’s all toast…so from there you might just surrender and buy all new inners. If you really have to get the piston out… use a press. That’s what I’ve had to do with a motor cycle once. You might get lucky. Good luck!
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| Artfrombama |
Oct 13 2025, 01:06 PM
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#3
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Artfrombama Group: Members Posts: 379 Joined: 21-January 24 From: North Alabama Member No.: 27,870 Region Association: South East States
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Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward.
Don't pry on the fan blades, they break easily |
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| SteveNMaine |
Oct 13 2025, 01:24 PM
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#4
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Member Group: Members Posts: 86 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None |
QUOTE(Artfrombama @ Oct 13 2025, 01:06 PM)  Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward. Don't pry on the fan blades, they break easily Engine is on an engine stand with that head removed. |
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| Artfrombama |
Oct 13 2025, 02:47 PM
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#5
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Artfrombama Group: Members Posts: 379 Joined: 21-January 24 From: North Alabama Member No.: 27,870 Region Association: South East States
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QUOTE(SteveNMaine @ Oct 13 2025, 02:24 PM) QUOTE(Artfrombama @ Oct 13 2025, 01:06 PM) Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward. Don't pry on the fan blades, they break easily Engine is on an engine stand with that head removed. OK... Fashion a pusher to attach to the head studs and push the piston out of the cylinder. IE., like a harmonic balancer remover |
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