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Exhaust Gaskets
Posted: Sun Mar 18, 2018 9:15 pm
by 170C
I'm looking for some exhaust gaskets for my O-300. I know I want Blo-Proof type, but am unsure what brand would be best. On the net I see three brands. Airborne Blo-Proof @ $2.97 ea; Superior (doesn't show to be blo-proof) @ $6.36 ea and Blo-Proof brand at $10.50 ea. Seeking recommendations.
Also looking for the part number for the gasket that goes between the airbox and the carburetor.
Re: Exhaust Gaskets
Posted: Sun Mar 18, 2018 11:31 pm
by n2582d
170C wrote:... Also looking for the part number for the gasket that goes between the airbox and the carburetor.
Discussed
here.
Re: Exhaust Gaskets
Posted: Mon Mar 19, 2018 2:08 pm
by edbooth
170C wrote:I'm looking for some exhaust gaskets for my O-300. I know I want Blo-Proof type, but am unsure what brand would be best. On the net I see three brands. Airborne Blo-Proof @ $2.97 ea; Superior (doesn't show to be blo-proof) @ $6.36 ea and Blo-Proof brand at $10.50 ea. Seeking recommendations.
Also looking for the part number for the gasket that goes between the airbox and the carburetor.
Frank, most of the spiral wound gaskets are advertised as blow proof or no-blo. The old copper gaskets, not so good. Even the spiral wound ones will leak after a while if the mounting surface on the cylinder or the flange on the exhaust riser is not perfectly flat. Make sure when replacing the gaskets to check these mounting surfaces with a straight edge. The riser flanges get bent by over tightening the thin flange and the cylinder exhaust port can get eroded from a leak over a period of time. I have used most of the spiral wound gaskets over the years and never had one actually blow out, it was always because of the things mentioned above. At one point had to replace all of the risers because of the flanges thinning....my two cents worth.