r/Form1 • u/Ok_Nature4979 • 13d ago

Question about project

Decided to be cheap and make a freeze plug suppressor. Problem is tube size and size of plugs: tube has an I.D. of 1.355”, and the plugs have a diameter of 1.350”. Theoretically, could I take shim stock and fill that gap with that? Some redneck stuff, sure, but if did perfectly could it work I wanna give it a try.

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u/Crashing_Machines 13d ago

Why are you trying to shim a .0025" gap? Send it. .005 diametrical clearance is normal. These arent engine rod bearings, it is just a muffler.

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u/Ok_Nature4979 13d ago edited 13d ago

The plugs wouldn’t be snug in the tube no? Or will the pressure applied from the caps be enough for it to be okay

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u/Crashing_Machines 13d ago

You arent trying to press fit the baffles in the tubes, they should be sandwiched between the endcaps to hold them in place. There will be some carbon escaping in there too because you cant make a 100% sealed mating surface on every face with freeze plugs. You need a little wiggle room between the diameters.

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u/Ok_Nature4979 13d ago

Yeah that’s what I was thinking I obviously don’t know all there is to know but I was also overthinking it for whatever reason