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Worth compression testing a blown engine?

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Old Dec 27, 2017 | 12:15 PM
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Arrow Worth compression testing a blown engine?

I bought a used engine for cheap. The seller said that a coolant seal went, so he drained it and it sat for a while.
I have the engine sitting on my engine stand now.
Would it be worthwhile doing a compression test on it, to gain more information? Is it worth the risk of doing more damage if something is jammed or corroded?
Or should I just take it apart and inspect everything visually?

Thanks
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Old Dec 27, 2017 | 12:44 PM
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If it's known as blown, removed from the car, and sitting on a stand, then I wouldn't bother trying to do a compression test...

Just tear into it and see what you're working with.
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Old Dec 27, 2017 | 01:54 PM
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I'd just take it apart at that point, if it sat with bad coolant seal, the metal seals may be rusted in place and may jam into the housing ect
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Old Dec 28, 2017 | 07:47 AM
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Yep. I've been through a few motors that had bad coolant seals that sat for a long time and all the seals were rusted into the rotor. Was a CHORE to get them out, at least 1 time I had to just throw out the rotor.

Compression test won't give you anything here. When a motor is open all secrets are revealed.

Dale
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Old Dec 29, 2017 | 08:49 PM
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You should trademark that last line, Dale
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Old Dec 31, 2017 | 07:39 AM
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Originally Posted by GoodfellaFD3S
You should trademark that last line, Dale
It's at least "signature worthy", for sure.
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