trickedcarbine Posted December 14, 2016 Report Share Posted December 14, 2016 also found a pinched oring in cool head Antifreeze would also destroy the piston rightOuch, Coolant is the anti lube in a cylinder, but it wouldn't cause a hole in the top of a piston. It is possible that it ate enough coolant from the system that the radiator didn't have enough fluid to properly cool the motor. Quote Link to comment Share on other sites More sharing options...
hoppedupandcutdown Posted December 14, 2016 Report Share Posted December 14, 2016 OK, I'll ask... So, you're saying that you did not do a leakdown test before or after, right? And now it's apart? Quote Link to comment Share on other sites More sharing options...
Deadbeat Posted December 15, 2016 Report Share Posted December 15, 2016 super rare boyesen ported banshee cyls yo Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted December 15, 2016 Report Share Posted December 15, 2016 Probably just global warming. Sent from my SM-S820L using Tapatalk Quote Link to comment Share on other sites More sharing options...
registered user Posted December 17, 2016 Report Share Posted December 17, 2016 do you have photo of piston and plug ? im not so sure your problem had anything to do with being lean Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted December 17, 2016 Report Share Posted December 17, 2016 do you have photo of piston and plug ? im not so sure your problem had anything to do with being leanWhat are you thinking? Sent from my SM-S820L using Tapatalk Quote Link to comment Share on other sites More sharing options...
registered user Posted December 18, 2016 Report Share Posted December 18, 2016 (edited) never melted a hole myself but read a few things about preignition which is the phenomina that melts the hole. handful of events could of triggered the preignition. pinpointing it might be difficult since we know almost nothing of his engine. could of been to lean possibly. maybe a bad chamber design. who know what the comp ratio was. alof of people use +4 spark lead but maybe it was just a bit to much for the setup he had. said the oring failed, was that before or after shit went down hill. were the pipes old and full of carbon. what spark plug. you can see theres a lot of scenraios to sort through. im wondering if the other piston was near failure also or still looked brandnew. this might help decide what direction to look Edited December 18, 2016 by registered user 1 Quote Link to comment Share on other sites More sharing options...
J-Madd Posted December 18, 2016 Report Share Posted December 18, 2016 never melted a hole myself but read a few things about preignition which is the phenomina that melts the hole. handful of events could of triggered the preignition. pinpointing it might be difficult since we know almost nothing of his engine. could of been to lean possibly. maybe a bad chamber design. who know what the comp ratio was. alof of people use +4 spark lead but maybe it was just a bit to much for the setup he had. said the oring failed, was that before or after shit went down hill. were the pipes old and full of carbon. what spark plug. you can see theres a lot of scenraios to sort through. im wondering if the other piston was near failure also or still looked brandnew. this might help decide what direction to lookYep it's always difficult in this situation to tell if the cut oring caused the damage or was a RESULT of the damage. Anytime I've had a blown oring the top of piston and dome was trashed. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.