William737 Posted August 22, 2019 Share Posted August 22, 2019 Hello, This is one of the pistons pulled out of a forged engine of mine built by race tech... Just wondering what happened to it? If anyone has an insight into how it got into this state it'd be great to hear! Thanks, Will. Quote Link to post Share on other sites
akyakapotter Posted August 23, 2019 Share Posted August 23, 2019 What dose the top of the piston look like Quote Link to post Share on other sites
William737 Posted August 23, 2019 Author Share Posted August 23, 2019 Top is nice and clean actually Quote Link to post Share on other sites
akyakapotter Posted August 23, 2019 Share Posted August 23, 2019 Possibly detonation has caused that. anything been changed and not had the mapped checked to suit changes ? Who mapped it ? Quote Link to post Share on other sites
William737 Posted August 23, 2019 Author Share Posted August 23, 2019 The car was mapped by a guy that I have had trouble with before, he said he was struggling getting the timing right when he gave it back to me but said it was okay. Since then I have learnt more and can do it myself and found out he's not as good as he says, I took my glanza there before it had the forged engine as the head gasket blew, he sorted it but two days later it blew again! Opened up the engine and it turned out that he put the all ready used oem headbolts back in with an Athena gasket. Definitely won't go to him again, will do things myself now. Quote Link to post Share on other sites
akyakapotter Posted August 23, 2019 Share Posted August 23, 2019 Would say that damage is down to mapping then bud get it sorted and taken to someone who if comfortable with starlets. Quote Link to post Share on other sites
akyakapotter Posted August 23, 2019 Share Posted August 23, 2019 Did you by any chance have your cam cover powder coated ? Quote Link to post Share on other sites
William737 Posted August 23, 2019 Author Share Posted August 23, 2019 Yeah mate, I didn't no Quote Link to post Share on other sites
Calum122 Posted August 24, 2019 Share Posted August 24, 2019 22 hours ago, akyakapotter said: Did you by any chance have your cam cover powder coated ? Why would that be a problem? You think it was shot blasted and sand was still left in there? Quote Link to post Share on other sites
akyakapotter Posted August 24, 2019 Share Posted August 24, 2019 If the baffle plate wasn't taken off yeah could have been sand that done that yeah. Quote Link to post Share on other sites
William737 Posted August 26, 2019 Author Share Posted August 26, 2019 Blimey, I had done about 2000 miles and just one afternoon it started to develop a tappy sound then about 100 miles later it was alot louder. That's when i parked it up. Quote Link to post Share on other sites
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