Will a brass freeze plug suffice
#9
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You don't have to make a shaped plate, you can just make a "strap" over the plug to hold it in if you're concerned.
#14
Ok so: Freeze plug, RTV, o-ring, gasket, rtv, block off plate, two grade 8 m6x1.0 bolts?
This sort of thing is a new mystery for the community and i want to make sure i got it right. This solution isn't available off the shelf to take cues from, so we're all flying blind.
This sort of thing is a new mystery for the community and i want to make sure i got it right. This solution isn't available off the shelf to take cues from, so we're all flying blind.
Hmmm, might wanna go 12.9. Ya just never know...
#18
The main reason the hole exists is for the removal of the core material after casting. Core plug would be a more correct term. They will not save an engine from the freezing of straight water. FWIW zinc plated steel is a much better choice then brass.
I thought the whole idea of freeze plugs was that if the coolant freezes and expands, the plug will pop to relieve pressure in the casting which should stop the casting itself popping.
If you're going to the lengths of fabricating and sealing a blanking plate, why bother with the plug?
If you're going to the lengths of fabricating and sealing a blanking plate, why bother with the plug?
#20
I thought the whole idea of freeze plugs was that if the coolant freezes and expands, the plug will pop to relieve pressure in the casting which should stop the casting itself popping.
If you're going to the lengths of fabricating and sealing a blanking plate, why bother with the plug?
If you're going to the lengths of fabricating and sealing a blanking plate, why bother with the plug?
As mentioned, the holes are actually just leftovers from the sand casting process, where the core needs to have some parts leading out so that it remains centred when the molten metal is poured in.
The brass plugs are pretty much just a cheap and reliable way to block off the holes left afterwards. (which btw only seem to be called freeze plugs in the US, outside of the US they seem to be more commonly called core plugs, or welsh/welch plugs)
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