6" SS EXHAUST STACK

[Wallace Craig]

Kurt, I am probably the last person on earth that you should tale advise from about anything mechanical. Having said that; can you not install a flap at the end of the exhaust that is weighted to stay closed when the engine is not operating? I know I have seen it on truck applications. Keep Tennessee clean & green, maybe I will get back that way sometime soon. Fuel is $2.44 at Racetrack in Azle. Happy holidays. Wallace Craig 95 WLWB 42 Azle, Texas --- On Thu, 12/4/08, Kurt Horvath wrote: From: Kurt Horvath Subject: [WanderlodgeForum] Re: 6" SS EXHAUST STACK To: WanderlodgeForum@yahoogroups.com Date: Thursday, December 4, 2008, 8:58 AM Here we are 6 weeks after our last posts on my exhaust build. I should have some photos today rain permitting. Some forum members brought up several points that I had not fully considered or researched. Some of the mods are a 90 degree turnout pipe up top, a 30 degree miter cut with a rain visor and a drain tube on the necks bottom inside curve of the turn out. This should keep most of the rain out. Not being able to decide on exactly which type of exit I wanted I have built, two types the 90 I just described and a straight stack with a rain cap. Yes David the same as on your JD, At least I polished it up. If you look at your PT's exhaust it's a straight shot from the exhaust opening straight into your motor. Systems with mufflers have water traps and some have drains as well, small holes drilled into the bottom of the muffler. I opted out of a muffler, for a straight stack, so some sort of rain trap had to be created that would not interfere with the exhaust gas flow and trap and drain rain accumulation of any proportions. A 5" hole can accumulate a lot of water in a daily south Florida afternoon rain, day after day sooner or later your going to fill the block with water. According to Detroit this is a problem. DUH!!! Detroit used the words Catastrophic Failure several times. This first post has a photo of the test drain trap. Look on the Home Page for photo in Bumpersbird Album last pic. What you are looking at is the drain section with the garden hose on full flow. 5 gallons per min. As you can see it gets most of the flow. The section of tube on the ground has been cut down to 6" long with a 3.5" electric exhaust dump valve installed on a flange to open and close the water trap. At this point it is manually operated by a rocker switch or a by a remote key fob. I'm working on a thermal activated switch that will close the valve upon heating or a sensor that will open the valve if it detects water in the trap. The surest method of operation is to open it when parked and close it before you crank up the motor Some of my modification will most likely raise some eyebrows, and the commentary which when taken in the proper context may led to another modification. Most likely NOT a this stage, unless of course someone spots a glaring defect or error in my build. I'm ready to install the new pipes and go somewhere in the coach, she's been in the barn since Aug. On the up side I have gotten several large fix's and rebuilds done on her since I knew she would sitting for a while. Comments, criticism, suggestions, jokes, remarks, welcomed. Currently this is a prototype for my coach, a direct replacement for the 95-96 PT42's is in the works. It will be built Stainless Steel and will be a direct bolt in application, to replace the OEM parts. Kurt Horvath 95 PT 42 10AC ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/WanderlodgeForum/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/WanderlodgeForum/join (Yahoo! ID required) <*> To change settings via email: mailto:WanderlodgeForum-digest@yahoogroups.com mailto:WanderlodgeForum-fullfeatured@yahoogroups.com <*> To unsubscribe from this group, send an email to: WanderlodgeForum-unsubscribe@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/