compression differences

[chillholm]

Hi all,

Did a compression test today in 951 rotax 99GTX got 130 in the first cylinder 147 in the second. Is this difference okay?

 

[timmyboy76]

yeah..its good.

 

[Steve Swinton]

If you were racing it I would say give it a top end overhaoul as it indicates a little more wear on one cylinder over the other. If you ride it for fun then if it starts ok and still pulls your arms out of their sockets when you wind up the revs, then leave well alone and enjoy the ride!

Steve.