clyde111112
Member
- May 11, 2006
- 2
- 0
i read on this forum that a guy had eric bore his cr500. he bored it 1mm over and said he bored it that far because it eliminates the decompression passages. can someone explain what the purpose of eliminating the decompression passages on the cr500 would be? what r the pros and cons of doing this ? the reason im asking this question is because im sending my cr500 jug and head to be bored and ported this weekend and want to know if i should have mine bored to 1mm over.