Originally Posted by jwalker
Hugh, it won't have shells as in a 4 stroke. It'll be needle rollers and they run between the bigend of the conrod and the crank. If there's severe rust, it's a major job. If the crank and rods are only minorly damaged, it is possible to hone them and bring them back to life relatively inexpensively if DIYing is an option. Needle rollers can be purchased from bearing suppliers in quantities of 100 for not too much money.
Spot on Jeff, needle bearing...and a pure Bast*** to fit, especially if you've got shovels for hands
. The mains had very noticable rust on them with the bearing coating missing in parts. As far as i recall I spent around £1200 on it and its still running, abiet on another boat