AN UNBIASED VIEW OF USED 70 HP YAMAHA 4 STROKE OUTBOARD FOR SALE

VVT achieves this by modifying the timing of the consumption valves, enabling them to open up before the exhaust valves are absolutely closed, developing a momentary overlap inside the timing where each sets of valves are open up. Using VVT, this overlap can be increased or lessened by altering intake timing with the camshaft resulting in the best