muffler question - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-09-2005, 04:46 PM   #1
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muffler question

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Do all engines have a gasket between the muffler and the exhaust header. If so, what do you use for a gasket material?

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Old 05-09-2005, 06:17 PM   #2
Kevin McGrath
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Most glow engines dont use gaskets.
Those that do seem to eventually flatten the gasket and many mufflers have been lost that way.
If you have leakage between the stack and muffler or manifold true up both surfaces with a good sharp file or sanding block which usually seals the joint.
I have had some success with that red hi temp make a gasket stuff too.
All above just my opinion but it works for me..........
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Old 05-09-2005, 09:14 PM   #3
Ed Smith

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There should be a gasket between the two flat mating surfaces of the muffler and the case. The material should be brass shimstock at least .005" thick. This material is readily available from automotive parts stores and industrial suppliers. It does not take long to make some.

In operation the muffler vibrates and the two mating surfaces rub against each other. This rubbing causes the aluminum to "Pick up". The end result is a rough surface and leakage. The grey sludge on the fuselage is a good indication of that.

Ed S
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