Re: Packard model 2365, 288 cubic inch engine running hot
Posted by Owen_Dyneto On 2015/5/31 12:30:57
Does liquid flow through any ports in the head?
No doubt you've noticed the thermostat housing (water outlet) is on the cylinder head so yes, the head is a honeycomb of water passages. But as Wesley suggests, I'd hesitate to remove it until you've tried the usual chemical cleaning treatment (oxalic acid, followed by a neutralizer) and perhaps a power flush of the system. Try to borrow a flushing gun like this one and use it on the engine block and head assembly, flushing in reverse direction of the coolant flow. Then perhaps repeat the oxalic acid treatment until the coolant drains colorless.
Attach file:
(118.03 KB)
No doubt you've noticed the thermostat housing (water outlet) is on the cylinder head so yes, the head is a honeycomb of water passages. But as Wesley suggests, I'd hesitate to remove it until you've tried the usual chemical cleaning treatment (oxalic acid, followed by a neutralizer) and perhaps a power flush of the system. Try to borrow a flushing gun like this one and use it on the engine block and head assembly, flushing in reverse direction of the coolant flow. Then perhaps repeat the oxalic acid treatment until the coolant drains colorless.
Attach file:
(118.03 KB)
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=162558