mholub Posted February 11, 2013 Author Report Share Posted February 11, 2013 Well i was going to bolt it back on and with the plugs out turn the engine to make sure the the piston didnt hit. Quote Link to comment Share on other sites More sharing options...
mholub Posted February 11, 2013 Author Report Share Posted February 11, 2013 I will post the results when I get done. Thanks to all for the advice. Quote Link to comment Share on other sites More sharing options...
mholub Posted February 12, 2013 Author Report Share Posted February 12, 2013 Whay type of devcon epoxy would be best to use? Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted February 12, 2013 Report Share Posted February 12, 2013 https://www.google.com/webhp?sourceid=navclient&ie=UTF-8#hl=en&tbo=d&sclient=psy-ab&q=two+stroke+squish+testing&oq=Two+stroke+squish+test&gs_l=hp.1.0.33i21.0.0.2.11740.0.0.0.0.0.0.0.0..0.0.les%3B..0.0...1c..2.hp.ZJV0TvPX5Nk&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&bvm=bv.42261806,d.b2U&fp=6dd38a3c34f677a9&biw=1024&bih=544 Quote Link to comment Share on other sites More sharing options...
camatv Posted February 12, 2013 Report Share Posted February 12, 2013 is this a cheetah or a cub? if its cheeta the o-ring seals are in the cylinder? if its cub shouldnt be to bad.. Quote Link to comment Share on other sites More sharing options...
mholub Posted February 12, 2013 Author Report Share Posted February 12, 2013 It has the oring seals between the domes and cylinder. There is a groove that the o rings sit in on top of the cylinder. Quote Link to comment Share on other sites More sharing options...
Nieskes Posted February 12, 2013 Report Share Posted February 12, 2013 This will work http://www.fastenal.com/web/products/detail.ex?sku=0682574, jb weld will probebly we good enough also. Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted February 13, 2013 Report Share Posted February 13, 2013 Big fan of marine-trek,but normally I use granite with multiple grits of sand paper starting heavy and finishing up at 600 do figure 8s till mark is gone,check swish,adjust base gasket if needed,I have done it multiple times with no problems this way Quote Link to comment Share on other sites More sharing options...
mholub Posted February 20, 2013 Author Report Share Posted February 20, 2013 So upon further investigation, I can remove the dent by machining about 9 thousanths of an inch off of the top of the cylinder. I feel like that is a better/easier fix than trying to fill it with epoxy or welding on it since I have access to the equipment and a machinist willing to do it for me. There is an o-ring that sits in a groove on top of the cylinder that the domes seat into. That groove would be shallower by that amount. Does anyone see a problem with that sealing properly if I do that? Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted February 20, 2013 Report Share Posted February 20, 2013 So you are ignoring the safer method that was proposed to you in favor of what you had already decided to do,,,didn't provide any pictures of the damage,and are willing to run the risk of damaging your nicasil ? Here> http://www.engineering.com/Library/ArticlesPage/tabid/85/ArticleID/132/O-rings.aspx http://www.allorings.com/oring_groove_design.htm Quote Link to comment Share on other sites More sharing options...
mholub Posted February 20, 2013 Author Report Share Posted February 20, 2013 So you are ignoring the safer method that was proposed to you in favor of what you had already decided to do,,,didn't provide any pictures of the damage,and are willing to run the risk of damaging your nicasil ? Ya, I see your point. I sent the cylinders with the guy that has the equipment before I had a chance to get pictures so that's why I have not posted any. I might be able to get him take a couple and send them to me. Either way, it sounds like the epoxy method has a proven track record so I will stick with that. Thanks for helping me realize why I asked for suggestions in the first place. Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted February 20, 2013 Report Share Posted February 20, 2013 No problem man. But it would be very helpful to get some pictures. Maybe someone else has some ideas? Quote Link to comment Share on other sites More sharing options...
Starwriter Posted February 20, 2013 Report Share Posted February 20, 2013 Maybe I'm not getting it, but how can it leak water from gravity, if the dents aren't where the O ring actually seals? (bottom of the groove in the cylinder and the head surface) Quote Link to comment Share on other sites More sharing options...
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