Originally Posted by wrk2surf
not to replay but I was reading a few pages back that Cyril changed out the bottom end.. now why would he change out a barrel and head with the chance of a leak, etc.. It looked like a straight complete motor swap to me.
Bottom end is what carries the swap penalty. He did a straight swap at the marathon bivouac, and if rules have been followed, he was allowed to do whatever he wanted to the top end at rest day (but not touch the bottom end without taking a 2nd penalty).
I speculate (with no information, heh, who did that ever stop) that he put on a good head/ piston/ cam/ etc at rest day, and is back to having the HP he is accustomed to, on the same bottom end he swapped in at Marathon.