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Old 12-21-2020, 10:12 PM   #1
OldPinky
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Default B21A intake coolant port block off

Got an 82' 245 I'm converting to fuel injection and the new intake manifold does not cover the holes where coolant goes through. I was wondering what you guys would do to block these ports. I was thinking thread and put a bolt in it but then I'd end up with metal flakes in the coolant. Any advice is much appreciated.
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Old 12-21-2020, 10:16 PM   #2
2turbotoys
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Drain the coolant, use grease on the tap to catch the metal flakes, vacuum/wipe up what the grease doesn't capture. A tiny bit of whatever you miss won't hurt anything.
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Old 12-21-2020, 10:51 PM   #3
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Thanks.
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Old 12-22-2020, 10:53 AM   #4
kyote
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Quote:
Originally Posted by OldPinky View Post
Got an 82' 245 I'm converting to fuel injection and the new intake manifold does not cover the holes where coolant goes through. I was wondering what you guys would do to block these ports. I was thinking thread and put a bolt in it but then I'd end up with metal flakes in the coolant. Any advice is much appreciated.
Alternatively, let the coolant lube the tap. Shove the garden hose into the degas bottle and stuff a rag around it. Turn it on and the water pressure will blow the chips right out of the hole. Then drain and refill with coolant of choice.
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Old 12-22-2020, 11:06 AM   #5
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Locate the appropriate size freeze plug if the hole is round.
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Old 12-22-2020, 11:40 AM   #6
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/\ /\ /\ That's what I did with my 531 head. I only discovered this after it was all together and I added coolant, lol. I forget the size, but I jsut got a little metal freeze plug, smeared a tiny bit or RTV on it, tapped it in, never thought about it again.
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Old 12-22-2020, 08:33 PM   #7
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Alternatively, let the coolant lube the tap. Shove the garden hose into the degas bottle and stuff a rag around it. Turn it on and the water pressure will blow the chips right out of the hole. Then drain and refill with coolant of choice.
That is a great idea.
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