Quote:

When the valve diameter is big, and has a long stem. Like the B1 M/C stuff its a almost a must.
But for most engines turning below 8K with a moderate valve size. You wasting money IMO



Yeah they COST... I payed $100 each for my B1M/C intake
valves 2.4 dia ... I need to replace 1 that I misplaced
and they want $140 for it