My Ford diesels will not run with back pressure. I got the wrong muffler at TSC once, made for an IH tractor and you couldn't see through the muffler from end to end. Knocked the baffle out where I could see through it to get it to work but it was useless as a muffler and found the right Ford spec. muffler (you could see through) and the engine ran fine.
When I had my cosmetically restored '79 JD 4230, it had a stupid little 1 ½ outlet on the muffler for a 100hp, 400 cu in engine. Drove me nuts. So I took it off and installed a 4" dia chrome after market pipe without a muffler. The exhaust manifold outlet on that tractor was large because the 4430, the 125 hp version of that machine used a turbo to get the extra 25 ponies.
Loved to take that big 6 to parades with flags all over it, idling along listening to that sweet music. Bystanders liked it too. Got a lot of thumbs up. When working it, I usually wore ear protection even though the Sound Guard cab helped. Sold it when I downsized my farming operation.
When I was a teen growing up, my mechanical mentor said the same thing about not to run the engine hard without exhaust manifolds attached and told me a story about having it happen to him. I never attempted to prove him wrong. Wasn't worth it.
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Today's Featured Article - Product Review: JB Weld - by Staff. JB Weld is basically an epoxy glue that does an exceptionally good job of bonding to cast iron and steel along with several other materials. As I mentioned, it is so common that I have yet to buy a tractor that did not have JB Weld used somewhere. It is sometimes used so well you can't tell its there and other times used as a sloppy quick fix. Finding where and how it can be used correctly is key to whether you are using it as an "inelegant hack" or an integral solution to difficult and expens
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