1. R

    Breaking in an SBT 657 in a 94 SPX - Sluggish?

    Hey everyone: I'm doing breakin on my old beater. Starts very nicely, but it seems like it's really sluggish. I elected NOT to use block-off plates so I'm running break-in oil at 50:1 plus the injection pump. With that much oil, will the engine run "normally" or will there be a noticeable...
  2. B

    New Rings, Break-in?

    I have read a lot about how to break-in a new motor or even new piston and rings.... Are the steps any different if the cylindars were only honed, same pistons, and new rings? I am finishing up the install of new rings on my Seadoo XP 587. The existing sleeves and pistons are from SBT; I...