tooquicktostop Posted June 30, 2007 Author Share Posted June 30, 2007 and more Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 30, 2007 Author Share Posted June 30, 2007 and a couple more Quote Link to comment Share on other sites More sharing options...
gaz1 Posted June 30, 2007 Share Posted June 30, 2007 shit that don,t look good mate:( Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 30, 2007 Author Share Posted June 30, 2007 shit that don,t look good mate:( Nope, it is almost a scrap block as #2 has deep scoring, I think the head may be ok with a skim will need to get it checked , either way expensive ! Quote Link to comment Share on other sites More sharing options...
b_have Posted June 30, 2007 Share Posted June 30, 2007 The scoring can be deceptive, its suprising how much can be removed with a 0.040" bore. Looks like a det induced piston failure causing the ring land to errode and ring escaping. Quote Link to comment Share on other sites More sharing options...
grahamc Posted June 30, 2007 Share Posted June 30, 2007 good luck mate, hope it salvagable! Quote Link to comment Share on other sites More sharing options...
bromy Posted June 30, 2007 Share Posted June 30, 2007 Cant be arsed going through the thread again but did Dan say he had a endoscope down through the plug hole and say the pistons looked ok?:( I could be wrong though Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 30, 2007 Author Share Posted June 30, 2007 Cant be arsed going through the thread again but did Dan say he had a endoscope down through the plug hole and say the pistons looked ok?:( I could be wrong though I started a new thread on Tech as this one is soo long Quote Link to comment Share on other sites More sharing options...
Ian C Posted June 30, 2007 Share Posted June 30, 2007 Those pictures show a classic rounded-off piston due to short but sustained detonation. It's certainly not a... 3rd I have not been responsible for any of the servicing, maintenance, or modifying of Deans car or infact any of the cars being discussed. I can only map with what I am given in these cases. ...servicing or maintenance issue, so no slopey shouldering off in the direction. However, 1st The engine did not "Blow up". I tend to stop well before this point. No flames, no holes, no rattles etc It lost the capacity to maintain cylinder pressure on cylinder number 2. This is most likely caused by either piston or ring failure. The result is high crankcase pressure i.e. breathing. I have borescoped the engine and can see 6 pistons still in their bores. http://www.mkivsupra.net/vbb/showpost.php?p=1469708&postcount=149 So there you go, you haven't got a blown up engine, it's official -Ian Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 30, 2007 Author Share Posted June 30, 2007 Those pictures show a classic rounded-off piston due to short but sustained detonation. It's certainly not a... ...servicing or maintenance issue, so no slopey shouldering off in the direction. However, http://www.mkivsupra.net/vbb/showpost.php?p=1469708&postcount=149 So there you go, you haven't got a blown up engine, it's official -Ian Yes that makes me feel so much better about having my engine back in 3 cardboard boxes Quote Link to comment Share on other sites More sharing options...
Jake Posted June 30, 2007 Share Posted June 30, 2007 Yes that makes me feel so much better about having my engine back in 3 cardboard boxes Well I admire your stoicism mate. I'd be gutted if that was mine. God knows I've had enough practice. I've got a set of stock pistons (used but sound) that I'm willing to donate if you get another block. Quote Link to comment Share on other sites More sharing options...
Alex Posted June 30, 2007 Share Posted June 30, 2007 Cant be arsed going through the thread again but did Dan say he had a endoscope down through the plug hole and say the pistons looked ok?:( I could be wrong though Maybe the light wasn't on Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 30, 2007 Author Share Posted June 30, 2007 Well I admire your stoicism mate. I'd be gutted if that was mine. God knows I've had enough practice. I've got a set of stock pistons (used but sound) that I'm willing to donate if you get another block. Thanks for the generous offer, I am planning my return at the moment Cheers again Quote Link to comment Share on other sites More sharing options...
Jspec Germany Posted July 1, 2007 Share Posted July 1, 2007 Hip-Hip-Horray! That's good to hear. Quote Link to comment Share on other sites More sharing options...
TLicense Posted July 1, 2007 Share Posted July 1, 2007 Cant be arsed going through the thread again but did Dan say he had a endoscope down through the plug hole and say the pistons looked ok?:( I could be wrong though To be fair he said the pistons were still in the bores, so not a fully catastrophic failure of the piston. He did also say that it had most likely suffered from piston or ring failure of some kind. If he was just having a quick look then I could imagine 20-30% of the edge of one piston not being intact could easily be missed. Quote Link to comment Share on other sites More sharing options...
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