Hey y'all, been a while As many of you know, the exhaust on the 430 is a weak point. Over time, the elements and vibration from the diesel cause it to fall apart. Same thing happened to mine. I did not want a "stack" as I find them to be ugly, and wanted the exhaust discharge similar to factory.
The parts required for this include:
1) Two 304 stainless long-tangent 90-degree elbows, 1.5" OD
2) One 304 stainless long-tangent 45-degree elbow, 1.5" OD
3) A couple feet of 304 stainless straight pipe, 1.5" OD
4) 1/4" thick stainless steel mounting flange to connect to factory exhaust manifold (machined)
4) Mounting bracket/clamp for the opposite end of the exhaust, sized to fit alternate motor mount location (machined). Again in 304 stainless
Most of these parts I sourced fairly easily online. The brackets I designed in CAD and had machined by a friend of mine.
Once I had all of the components on-hand and test fitted, a friend came over with some tools and his TIG welder. Within a few hours, we had everything fully welded and installed. I struggled to find a stainless steel muffler that would fit, so opted to eliminate it altogether. She is definitely not quiet, but is much quieter than before, and the exhaust tone has mellowed significantly. I live out in the country and wear ear protection whenever running it, so the noise is not an issue.
The end result is a robust exhaust system that should last the remaining life of the tractor, although time will tell. Total cost to build was about $200, but I also got the welding done for free. If anyone wants a complete list of parts and where I got them from, along with my CAD drawings for the necessary bracket and flange, I would be happy to share them.
Cracked hood? I don't think it's cracked, unless you are seeing something I missed. Are you referring to the black strip across the top? If so, that was there to keep the cab front glass from rubbing on the paint.
I found the straight sections on a certain auction site, available by the foot. I ordered what was needed plus some extra just in case.
The bends I found on a certain river site. I wasn't sure if the short or long tangents would be better. I ended up using the long tangents as they made for smoother transitions and seemed to work better when piecing it all together.
I searched for a stainless steel muffler that would fit the limited space and match up with the 1.5" pipe, but didn't come up with much, so left it off for now.
Yes, it points towards the operator, since there was the most clearance for the hot exhaust to exit. As currently designed and built, you would want to wear hearing protection regardless of what direction the outlet points.