sly40t New Member 15 Member For: 11y 10m 16d Posted 10/03/15 11:29 AM Share Posted 10/03/15 11:29 AM Hi everyone I have a FGxr6 turbo . mods cooler. full exhaust. 1000cc bosh injectors.e85 fuel pump. and eternal gate and screamer pipe . and safe tune . last week leaving work jumped on it wheel spun up the street. then I heard a rattle sound turned the car off checked under the bonnet and found the harmonic balancer broken and key way missing. tried to start it and sound like its got no comp. bottom end turning but not top end due to key way missing does anyone think I have bent valves . I am a mechanic never seen something like this Link to comment Share on other sites More sharing options...
jimmixr Donating Members 686 Member For: 14y 2m 26d Posted 10/03/15 08:05 PM Share Posted 10/03/15 08:05 PM A broken harmonic balance wont bend valvesIf you've broken your timing chain..then chances are very high.Balancers have been known to fail in the barra Link to comment Share on other sites More sharing options...
rokkie Member 87 Member For: 12y 1m 25d Gender: Male Location: Adelaide, SA Posted 11/03/15 10:31 AM Share Posted 11/03/15 10:31 AM If the key way is missing the tone wheel/timing sprocket will slip on the crank. If it has chances are very high for bent valves. Get the rocker cover off and check valve timing on TDC. Link to comment Share on other sites More sharing options...
sly40t New Member 15 Member For: 11y 10m 16d Posted 11/03/15 10:55 AM Author Share Posted 11/03/15 10:55 AM thank you all for your support and responses pulled apart today results were timing chain ok . number 3 and 5 cylinder bent valves . cylinder 3 no comp . and 5 low comp Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 7m 14d Gender: Male Posted 11/03/15 11:02 AM Share Posted 11/03/15 11:02 AM Can you go thru this failure in a bit more detail, any pics. Pics of the keyway in the crank and the harmonic balancer would be good to. You are not suggesting someone forgot to put the key there?? Link to comment Share on other sites More sharing options...
sly40t New Member 15 Member For: 11y 10m 16d Posted 15/03/15 11:07 AM Author Share Posted 15/03/15 11:07 AM give a day or two get picture and all details will get back to you Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 1m 22d Gender: Male Location: Perth Posted 20/03/15 02:35 AM Share Posted 20/03/15 02:35 AM bump Link to comment Share on other sites More sharing options...
barnz Member 3,047 Member For: 10y 11m 25d Gender: Male Location: Brisbane Posted 20/03/15 03:07 AM Share Posted 20/03/15 03:07 AM Uglies Link to comment Share on other sites More sharing options...
genuine honest person Member 2,769 Member For: 10y 9m 16d Gender: Male Location: near brisbane Posted 20/03/15 10:18 AM Share Posted 20/03/15 10:18 AM might get a ross balancer $600 .is it worth it ? Link to comment Share on other sites More sharing options...
masda74 To Loud Gold Donating Members 4,112 Member For: 12y 11m 14d Gender: Male Location: WA, Perth Posted 22/03/15 02:23 AM Share Posted 22/03/15 02:23 AM OP has done a runner?Any update? 1 Link to comment Share on other sites More sharing options...
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