Log in

View Full Version : stock compression?


WFO400
09-29-2007, 03:22 PM
Sorry, I don't have time right now to search (I'm working). What is the stock compression ratio for a 05 400ex? Thanks
hornetgod13
09-29-2007, 06:18 PM
It's 100 to 130 psi with the engine warm.
GPracer2500
09-29-2007, 06:40 PM
9.1:1
WFO400
09-29-2007, 06:44 PM
Originally posted by GPracer2500
9.1:1


That's what I was looking for, thanks!