Analysis the Effect of Changes Size of the Exhaust Header Inlet and Outlet on the Performance of a 125 CC Automatic Motorcycle Engine
Analisis Pengaruh Perubahan Ukuran Inlet dan Outlet Header Exhaust Terhadap Kinerja Mesin Motor Matic 125 CC
DOI:
https://doi.org/10.21070/ups.9021Keywords:
Motor Vehicles, Header Exhaust, Eengine PerformanceAbstract
Motorization is a major mode of transportation due to its practicality and efficiency. Technological advancements encourage modifications to enhance engine performance, one of which involves optimizing the exhaust system design, particularly the exhaust header. This study analyzes the effect of varying exhaust header inlet and outlet sizes on the performance of a 125 cc 4-stroke SOHC liquid-cooled automatic motorcycle engine. The results show that size variations significantly influence engine power and torque. A 28 mm inlet/outlet header produces a maximum power of 11.9 kW at 4000 RPM and torque of 27.44 Nm at 2000 RPM, making it optimal at medium engine speeds. The 28/30 mm header excels at high RPM (8000–9000 RPM) with 10.3 kW power output. The standard header provides stable but lower performance. Modifications using 28/28 mm or 28/30 mm headers are recommended to improve acceleration and maximize power, particularly at medium to high RPM ranges.
Downloads
References
C. Sutandi, "Pentingnya Transportasi Umum Untuk Kepentingan Publik," Jurnal Administrasi Publik, p. 22, 2015.
N. P. R. Yuliartini, "Kenakalan Anak Dalam Venomena Balapan Liar di Kota Singaraja Dalam Kajian Kriminologi," jurnal advokasi, p. 32, 2019.
M. S. Ghaly, "Analisis Perubahan Diameter Base Circle Camshaft Terhadap Daya Dan Torsi Pada Sepeda Motor," Jurnal Flywheel, p. 7, 2019.
A. Saepuddin, "Pengaruh Modifikasi Knalpot Terhadap Performa dan Suhu Mesin Pada Sepeda Motor SatriaF150," Jurnal Teknologi Terapan, 2023.
A. Ridho, "Analisis Pengaruh Daya, Tingkat Kebisingan, dan Torsi Sepeda Motor 4 Tak Pada Penggunaan Knalpot dengan Busi Racing dan Model Free Flow," Jurnal Pendidikan Teknik Mesin, pp. 112-113, 2019.
T. N. Wibowo, "Analisis Penggunaan Knalpot Racing Slip-On Dan Knalpot Racing Full System Terhadap Performa Mesin Pada Motor 150 CC," Prosiding Seminar Nasional Teknik, p. 205, 2023.
M. Nasir, "Perbandingan Jenis Knalpot Standar Dengan Knalpot Racing Terhadap Back pressure, Temperature, Dan Suara Pada Sepeda Motor 4 Tak," Jurnal Teknologi dan Pendidikan Vokasi Indonesia,
p. 29, 2023.
Y. P. Anas Mukhtar, "Pengaruh Pola Pelapisan Isolator di Bagian Header Terhadap Temperatur Knalpot Sepeda Motor," V-Mac, p. 11, 2022.
E. Subandono, "Analisis Tingkat Kebisingan Knalpot Sepeda Motor Produk Industri Kecil," Jurnal Mekanika dan Sistem Termal, pp. 21-22, 2017.
S. Anggoro, "PENGARUH PERUBAHAN DIAMETER KATUP TERHADAP PERFORMA MESIN SEPEDA MOTOR," PROCEEDING, 2019.
A. A. I. Y. ,. A. S. Rosadila Febritasari, "Analisa Pengaruh Panjang Muffler Pada Mesin 4 Tak Berkapasitas 125cc Terhadap Karakteristik Daya dan Torsi Mesin Menggunakan Pengujian Dyno dan Komputasi Fluida Dinamis," JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY, pp. 43-55, 2023.
M. D. B. Kamsiadi, "Pengaruh variasi diameter muffler end terhadap daya dan kandungan gas buang sepeda motor injeksi 125 cc," Repositori Universitas Negeri Malang.
T. S. Hendro Prastyo, "Pengaruh porting saluran intake dan exhaust terhadap kinerja kawasaki ninja 2 tak 150 cc," Jurnal Terapan Teknik Mesin, 2023.
S. Pamungkas, "Analisis penggunaan model knalpot standar terhadap kinerja mesin 4 langkah 100 cc dan 125 cc," Jurnal Teknik Otomotif, pp. 1-10, 2012.
M. A. Wahyu, "PENGARUH PROSENTASE PENAMBAHAN ETHANOL PADA BAHAN BAKAR PERTALITE TERHADAP DAYA DAN TORSI PADA MESIN MOTOR MATIC 125 CC," Jurnal
Protksion, pp. 20-21, 2019.
Downloads
Additional Files
Posted
License
Copyright (c) 2025 UMSIDA Preprints Server
This work is licensed under a Creative Commons Attribution 4.0 International License.
