How Much Compression Should A 250 2 Stroke Have?
How Much Compression Should A 250 2 Stroke Have? A 250cc 2 stroke should have 170 PSI or more and 210 PSI when new. A 500cc 2 stroke should have at least 140 PSI of compression and 170 PSI for good performance. Will a 2 stroke Start with low compression? Since the piston rings’ main