Stack muffler??

[Lanse]

Someone sent me plans on how to put a stack muffler on an old Briggs 11hp engine. They say use an old Farmall Cub muffler. Any truth to this?

 

[botamike]

Yes, that is the correct muffler, that and some black iron pipe from the local home improvement plumbing dept to fab up the pipe to the muffler and your all set. An alternate is the barrel muffler that older IH cub cadets use. Has a side inlet and an end outlet that you can point upwards and extend it for a stack. Tractor supply also offers the weather cap if you dont want to do a turn out style exhaust. Mike

 

[Anonymous-0]

Only advantage to vertcle pipe on a GT is looks.You will be burning yourself.If you dont use lockrings on the pipe joints,it will keep tipping one way or the other.Without a flapper or elbow at top,rainwater will run down the pipe and into the cylinder/engine and lastly,increased back pressure can shortly cause the exhaust valve to overheat and burn up,and overheat and chrystalize the exhaust port area of the engine making it fragile.
Oh,and the vibrating weight of the assembly can break out the whole corner of the block.Theres many a reason the mfgs don't offer this as an option.

 

[botamike]

They have been done by many, check out the ihregistery.com website, but he is right, if not done correctly, they can cause more problems than they are worth. Most use flapper caps. The turnout style is more for diesels to blow the soot cloud to the right or left of the tractor. Most make a brace of sorts that stablizes the stack and takes some of the weight/stress off the motor block. If you use the cub cadet stock muffler from like a 149 model. Extend the output pipe a couple of feet up and put a flapper cap on it, the weight is minimal compared to using the IH-1 Farmall Cub muffler from TSC. Cheers Mike