dealing with a seized engine
#743834
07/09/10 12:37 AM
07/09/10 12:37 AM
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Joined: Nov 2007
Posts: 450 DFW
68RRFlyer
OP
mopar
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OP
mopar
Joined: Nov 2007
Posts: 450
DFW
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Hey Guys, I'm considering buying a car that's been sitting a while. It's been garaged and off the road since the 90s, the motor's all intact and complete, but it's locked up from sitting. It's the original motor so I'd like to try and save it. What's the best way to go about doing this? Tear it down to get access to the rings, or should I just keep it together, pull the plugs and fill each cylinder with PB Blaster and let it sit? I've heard people using that, ATF fluid, or diesel fuel, as well. How would you guys go about saving this engine? Thanks! Cheers Dave
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Re: dealing with a seized engine
[Re: 68RRFlyer]
#743835
07/09/10 12:46 AM
07/09/10 12:46 AM
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Joined: Jun 2009
Posts: 171 Indy
moparman89
member
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member
Joined: Jun 2009
Posts: 171
Indy
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Its going to have to be rebuilt, so why not take it apart? ATF mixed with Acetone is a wicked solution that will break up anything. Its what I used on all my seized 440's.
School of Automotive Machinists Racing
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Re: dealing with a seized engine
[Re: DaytonaTurbo]
#743837
07/09/10 01:01 AM
07/09/10 01:01 AM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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If it will break loose, I've seen engines so corroded up, that beating each piston out from the bottom side with a piece of hardwood and sledge was the only way to get them apart.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: dealing with a seized engine
[Re: 68RRFlyer]
#743840
07/09/10 01:46 PM
07/09/10 01:46 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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If the cylinder walls are so corroded that it wont turn, it wont have any real piston ring seal either and probably wont run due to low compression. At least not on all 8.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: dealing with a seized engine
[Re: HemiRick]
#743842
07/09/10 02:44 PM
07/09/10 02:44 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
If the cylinder walls are so corroded that it wont turn, it wont have any real piston ring seal either and probably wont run due to low compression. At least not on all 8.
And even if it does run you can do more damage to the bores than good, even just cranking it over with the starter enough can drag enough crud to scratch up the bores more than necessary. I would just break it loose then take the pistons out right away.
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