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F engine round steel muffler. Use sealer?

#1

P

Phototone

The typical "F" series muffler, round steel, bolts to an aluminum muffler plate with 3 bolts around the crankshaft, with a crankshaft "support" plate. It is just a pressure seal around the outside edge. Other than cleaning the mating surfaces, does any one use any type of sealer when refurbishing and decarbonizing, in replacing the muffler??


#2

H

Hammerdown

Hello
Originally I think that there was an asbestos Rope style seal used in that area. I would surmise since we can no longer get our hand's on any asbestos, a Good High Temperature sealent would work in it's Place like RTV from permatex. I hope this helps, Hammerdown


#3

reynoldston

reynoldston

Hammerdown said:
Hello
Originally I think that there was an asbestos Rope style seal used in that area. I would surmise since we can no longer get our hand's on any asbestos, a Good High Temperature sealent would work in it's Place like RTV from permatex. I hope this helps, Hammerdown
Click to expand...

I have been there and tried it, even the high temp RTV will burn out. If you go to a auto parts store they should have a special sealer for exhaust systems. When it dries it very hard.


#4

beg

beg

you must be refering to muffler putty and I think that would work Is it important to have a good seal there?my commercial f motor did not have any seal there as I noticed when I took the muffler off to grill it on my weber.that motor runs pretty wet and has low rpm.carb has been cleaned but its a plastic walbro not the metal one it came with from the factory.Is this no seal on the muffler causing this?


#5

impalass

impalass

beg said:
you must be refering to muffler putty and I think that would work Is it important to have a good seal there?my commercial f motor did not have any seal there as I noticed when I took the muffler off to grill it on my weber.that motor runs pretty wet and has low rpm.carb has been cleaned but its a plastic walbro not the metal one it came with from the factory.Is this no seal on the muffler causing this?
Click to expand...
I had a hole in one muffler and it did not affect the rpm. RPM should be 2900 + or - 300.


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