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I own a 2017 E-Z-GO Freedom RXV gas model. I have installed a back flip seat and recently installed a enclosure for the winter months. After doing so, I now have exhaust fumes inside the cabin. Does anyone know of an extension for the muffler exhaust. Kawasaki 13.5 hp engine
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When the golf cart is in motion, wind flows around the sides and top of the enclosure, creating a low pressure area behind the cart. This low pressure zone can cause a back draft that draws exhaust fumes into the cabin. Also known as the "station wagon" effect and also dealt with a lot in the boating community. To mitigate this, you have two main options: extend the exhaust to the side and/or pressurize the cab.
One effective method to combat back draft is to run a custom exhaust extension out the side of the cart. Preferably extending the exhaust pipe so it exits a foot or more out the side can help direct the fumes away from the low pressure area. The farther out the extension, the better it will perform in keeping the exhaust away from the back of the cart. Run a custom metal exhaust extension to the edge of the cart, then extend it using heat resistant piping so that if you run up against something you will not damage property or the custom exhaust.
For a metal pipe, measure the diameter of your current exhaust outlet so the extension matches. Cut the metal pipe to the desired length. Secure the pipe to the exhaust outlet using high temperature hose clamps or by welding it in place so it’s firmly attached and won't vibrate loose. Make sure the pipe exits at an angle to direct fumes away from the cart. For a silicone pipe, select one with a matching diameter. Cut it to the desired length and secure it with high temperature hose clamps, routing it smoothly without kinks. Remember, the extension should not be restrictive, it needs to maintain the same or slightly larger diameter than the original exhaust to avoid creating back pressure, which can restrict engine performance and lead to overheating.
Alternatively, you can pressurize the cabin to prevent exhaust fumes from entering. Pressurizing the enclosure involves creating a positive pressure inside the cabin, which pushes air out through small openings and keeps exhaust fumes at bay. To achieve this, during the summer install ventilation fans in the front of the enclosure to draw in fresh air. These fans should be strategically placed to ensure a steady flow of air into the cabin.
Use weather stripping or rubber seals to close any gaps around doors, windows, and other openings. This helps so the positive pressure created by the fans is maintained and prevents exhaust fumes from seeping into the cabin. During winter months, you can still pressurize the cabin while keeping it warm. Use fans with built in heaters designed for enclosures or install separate small non exhaust emitting space heaters inside the enclosure. Make sure the heaters are safe for enclosed spaces and have adequate fan pressure to pressurize the cab. By maintaining positive pressure with the fans and using heaters to warm the air, you can create a comfortable and fume free environment inside your enclosure. It may not be easy, but it is the only effective way I know of for gas vehicles.
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