mrbeige 0 Posted April 13, 2008 Right, Two questions.... 1) I've got set of standard 2E pistons that I've removed from the block, and I wanted to make sure they were nice and clean ready to be refitted with new rings. I've managed to get most of the gunky oil off using POR 15 marine clean degreaser, but there is still some burnt oil in the ring seats. Is this anything to worry about, or can I leave it in there? I'd rather not if possible, but I'm struggling to get the gunky stuff out . 2) Secondly, there are some score marks on the thrust side of the pistons, is it anything to worry about?? Quote Share this post Link to post Share on other sites
mrbeige 0 Posted April 14, 2008 Anyone??? :shrug: Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted April 14, 2008 1) Ring lands need to be spotless. 2) Thrust scratching on the skirts isn't important. 3) Save up and buy some proper pistons :lol: Quote Share this post Link to post Share on other sites
mrbeige 0 Posted April 14, 2008 1) Ring lands need to be spotless. Thought as much. What could I use to clean them? Toothbrush action? 2) Thrust scratching on the skirts isn't important. Good :grin: 3) Save up and buy some proper pistons :lol: Yeah, you're funny! :lol: Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted April 14, 2008 Not sure tbh dude, I've never reused pistons before :lol: Try some solventy type stuff, thinners and the like, with a toothbrush. I would avoid any metallic implements such as wire brushes etc in case you get any abrasive particles in the holes under the oil control ring. Get them as clean as you can and shove em in! They'll get crudded up again almost straight away :-) Quote Share this post Link to post Share on other sites
pete_griff 0 Posted April 14, 2008 short of thinners/petrol with a toothbrush as kev suggested, you could get them steam cleaned... hope it all goes back together nicely for you anyway! Quote Share this post Link to post Share on other sites
CTWG60 0 Posted April 14, 2008 To clean ring grooves snap one of the old rings soak pistons over night in "gunk" and then use the sharp broken edge to scrap out the carbon deposites. You also need to check each piston is within spec using caliper micrometers depending on how many more miles you want out of the engine. Also check the bore is within spec using an old compression ring and some feeler gauges. Have a look in a any haynes manual for a better desription with pictures. A dremel with a nylon brush is useful as well. WD40 is good at getting bunt oil off too along with pipe cleaners for cleaning oiling holes. :) Quote Share this post Link to post Share on other sites
jamminvr6storm 0 Posted April 15, 2008 To clean ring grooves snap one of the old rings soak pistons over night in "gunk" and then use the sharp broken edge to scrap out the carbon deposites. I have also heard this however you have to uber careful not scratch them. Quote Share this post Link to post Share on other sites
8vtornado 0 Posted April 16, 2008 i work with rebuilding engines, and the way we do it is bend an old ring so that u can use the small flat end where the gap is, to poke back in there if that makes any sense, not the sharp bit from a broken one. that with some wd40 will get it out in no time. good luck Quote Share this post Link to post Share on other sites
mrbeige 0 Posted April 16, 2008 Cheers guys, that's some good info/advice. *goes off to buy toothbrush and WD40* Quote Share this post Link to post Share on other sites
