Coolant routing different on donor 4.2l engine -
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post #1 of 2 Old 07-05-2020, 07:45 PM Thread Starter
Ivica Dropulic
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Join Date: Jul 2018
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Coolant routing different on donor 4.2l engine

So I bought a untested 4.2l engine off of the classifieds and if that wasn't sketchy enough I noticed today while comparing my engine to the donor that they blocked off the coolant hoses on BOTH sides of the intake manifold. The only hoses are the ones in the photo plus the ones going to the rad and there was a thermostat installed. I don't want to waste time installing this engine if the previous owner messed it up by bypassing some coolant routes. Why do you think this was done and can it cause harm to the engine?

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post #2 of 2 Old 07-05-2020, 08:26 PM
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That's just for the heater core. Sometimes when a heater core blows and the owner doesn't want to fix it, they just do this instead.

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