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Old 28-01-19, 17:29
Alex van de Wetering Alex van de Wetering is offline
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Default Replacing oil Gallery plugs Chevrolet??

I am planning on replacing the Core plugs (soft plugs, freeze plugs, expension plugs, Welsh plugs etc. etc.) on my Chevrolet 216. I have bought a kit with replacement plugs, but it also comes with some very small plugs and even some threaded small plugs. I am presuming it's just a general kit for different engines, as I can't find a threaded plug anywhere, so I probably don't need all of them......or am I missing something?

After a while I also found the two small plugs at each end of the block at both ends of the oil gallery. Did anyone ever replace these? With the larger plugs it's quite easy to drill a hole off centre and pull them out....or give them a whack off centre to remove them....but how do you remove those small plugs???? I am thinking of drilling a hole in the centre and pulling with a woodscrew.....



Alex
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Old 30-01-19, 11:29
Beau Bruce Beau Bruce is offline
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Default

I personally haven't changed or thought about changing those smaller ones but if I was going to I would trying using a Tek screw instead of a wood screw as there is less chance of the Tek screw pulling out over the wood screw but it is still possible.
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Old 31-01-19, 12:12
Alex van de Wetering Alex van de Wetering is offline
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Beau, thanks for your reply and thoughts. As there is oil behind these small plugs, there is probably less risk of them rusting through......but now the engine is apart, I thought it would be wise to remove them as I can clean out the oil gallery.

Alex
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Old 31-01-19, 14:10
Phil Waterman Phil Waterman is offline
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Default Make sure to rod the oil line passages

Hi Alex

Be sure to rod out the oil line passages, those dead ends behind the plugs can trap some nasty sludge.

I used stiff wire and slow drill to loosen anything in there, old speedo cables work well. I've seen them as clean as a whistle or heavy sludge.

Keep us posted on your progress.

Cheers Phil
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Old 03-02-19, 13:40
Alex van de Wetering Alex van de Wetering is offline
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Thanks Phil. Can you confirm that the wartime 216 only requires two small soft plugs.....not the threaded ones?

Yes, I will certainly have to update my resto log...

Alex
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Old 03-02-19, 14:06
Phil Waterman Phil Waterman is offline
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Default The freeze plug at the back of block?

Hi Alex

Will have to check my restoration photos to confirm number and location of the oil gallery plugs. Mind wants to say only two drive in plugs. With screw plugs only coming in after they up the oil pressure.

But as you are replacing freeze plugs remember to get the one at the rear end block as being source of "mystery coolant leaks" coming out of the clutch housing.

Get back after I check my photos after rebuilding 6 different stovebolt engines have to refer to my photos and notes to remember what's on the original CMP and what's on later 235/261 engines.

Cheers Phil
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