Quik Posted July 28, 2007 Report Share Posted July 28, 2007 first one to guess what caused this gets a prize Quote Link to comment Share on other sites More sharing options...
misterp Posted July 28, 2007 Report Share Posted July 28, 2007 I don't have to guess, I KNOW! I've done that before on an old Pontiac 400, in my case I found the valvestem in the intake manifold under the carburator. You'll have to let me know if the piston expansion split the cylinder wall. Mr. P. Quote Link to comment Share on other sites More sharing options...
packjh Posted July 28, 2007 Report Share Posted July 28, 2007 at first glance number 1 made me sick to my stomach then i realized what happened in number 2 and the valve being that bent upwards like then i had to go puke. hmm mechanically i see what happened but dont know what caused it. I was going to throw the normal answer that everybody loves to use and blame for their engines is nitrous but it looks like your valve obviously made contact with your piston which means it was down way to long. so i guess something to with your valve train went haywire. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted July 28, 2007 Report Share Posted July 28, 2007 damn..............looks like it broke a valve spring or rocker arm, possibly from over revving, towing a load that was too heavy, lack of oil, nitrous, or too much boost from a blower or turbo............needless to say there was a lot of stress put on the valve train of that motor............ Quote Link to comment Share on other sites More sharing options...
shadowsniper3006 Posted July 28, 2007 Report Share Posted July 28, 2007 rod bolts let loose?? Quote Link to comment Share on other sites More sharing options...
rivierakid55 Posted July 29, 2007 Report Share Posted July 29, 2007 im gonna say you floated a valve. Quote Link to comment Share on other sites More sharing options...
nastyss Posted July 29, 2007 Report Share Posted July 29, 2007 ya u floated a valve ive done it too Quote Link to comment Share on other sites More sharing options...
kelleyperformance Posted July 29, 2007 Report Share Posted July 29, 2007 :with stupid: thats valve float alllllll the way Quote Link to comment Share on other sites More sharing options...
Justin Lamanna Posted July 29, 2007 Report Share Posted July 29, 2007 that sucks, who put the engine together? Quote Link to comment Share on other sites More sharing options...
semoSS Posted July 29, 2007 Report Share Posted July 29, 2007 i always thought if you burnt a whole in the piston was because you was running too lean... Quote Link to comment Share on other sites More sharing options...
SS_bnoon_SS Posted July 29, 2007 Report Share Posted July 29, 2007 i always thought if you burnt a whole in the piston was because you was running too lean... LOL! He didn't burn a hole in the piston, he punched a hole through it with a piece of steel!!! Quote Link to comment Share on other sites More sharing options...
ZZebes Posted July 29, 2007 Report Share Posted July 29, 2007 L92's Strike again Quote Link to comment Share on other sites More sharing options...
SS_bnoon_SS Posted July 29, 2007 Report Share Posted July 29, 2007 L92's Strike again Have there been other failures? Quote Link to comment Share on other sites More sharing options...
semoSS Posted July 29, 2007 Report Share Posted July 29, 2007 (edited) LOL! He didn't burn a hole in the piston, he punched a hole through it with a piece of steel!!! it lines up with the spark plug, the other side is where the valve started floating.... don't mess with me with sarcasm... running lean with maybe a little nitrous with maybe wrong gapped spark plugs.. Edited July 29, 2007 by Southeast Missouri SS (see edit history) Quote Link to comment Share on other sites More sharing options...
Quik Posted July 30, 2007 Author Report Share Posted July 30, 2007 it lines up with the spark plug, the other side is where the valve started floating.... don't mess with me with sarcasm... running lean with maybe a little nitrous with maybe wrong gapped spark plugs.. motor wasnt lean or ran on n2o. that hole is the valve stem that punchered the piston Quote Link to comment Share on other sites More sharing options...
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