RED-Z06 2,479 #1 Posted February 1, 2024 I was clearing out a corner of the shop today and found an old RLV silencer i ran on my old Racing kart, i figured if it can flow a 200cc engine turning 8600 a K series shouldn't be a problem. The Nelson muffler is fine but i catch a sharp "crack" on the exhaust note, its annoying when you mow for a couple hours. I slid the rlv silencer (its a can with about 6 steel screens in it) on and it really takes the edge off the sound. Id probably have to make a support arm to keep it from snapping the outlet off from vibration but i thought it was cool how it did effectively help. I put it on my 27hp Vtwin and the difference there was even more pronounced. 7 Share this post Link to post Share on other sites
ebinmaine 70,705 #2 Posted February 2, 2024 Definitely takes a bit of the "blappy sharpies" off the sound doesn't it. 1 Share this post Link to post Share on other sites
RED-Z06 2,479 #3 Posted February 2, 2024 21 minutes ago, ebinmaine said: Definitely takes a bit of the "blappy sharpies" off the sound doesn't it. The tone is much lower for sure, it dulls it down. Its kinda weird hearing the mechanical engine sounds over the exhaust 3 Share this post Link to post Share on other sites
rmaynard 15,913 #4 Posted February 2, 2024 I would watch for muffler over-heat. Too much back pressure may affect your performance. 1 Share this post Link to post Share on other sites
ebinmaine 70,705 #5 Posted February 2, 2024 1 hour ago, rmaynard said: I would watch for muffler over-heat. Too much back pressure may affect your performance. 18 hours ago, RED-Z06 said: RLV silencer That's a good point. Is that silencer a straight through design? Share this post Link to post Share on other sites
Sarthurs01 918 #6 Posted February 2, 2024 (edited) not to much to them few screens. its what we ran on our 5hp flat head brigs when we ran karts. Edited February 2, 2024 by Sarthurs01 1 Share this post Link to post Share on other sites
Wild Bill 633 866 #7 Posted February 2, 2024 Supertrapp makes an industrial spark arrestor muffler where you assemble with adapters, diffuser discs and resonator if needed. The number of diffuser discs is based HP and back pressure. 1 Share this post Link to post Share on other sites
RED-Z06 2,479 #8 Posted February 2, 2024 4 hours ago, ebinmaine said: That's a good point. Is that silencer a straight through design? Basically? Theres about 4 or 5 screens inside. They use this design on 420cc ohv engines that turn 9500 to 10,000 rpms, its really not restrictive, it takes the edge off 1 Share this post Link to post Share on other sites
