arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 20d Gender: Male Location: Perth Posted 16/12/16 04:57 AM Share Posted 16/12/16 04:57 AM Can you get some close up in focus images of the fracture surfaces of the threaded section in the crank and the under bolt head areas how many ks have you done since the clutch was installed. What RPM do you rev to. Have you over-revved much , say into the 7k region have you checker the harmonic balancer bolt. It may have loosened with the out of balance Link to comment Share on other sites More sharing options...
samhouston Donating Members 153 Member For: 14y 11m 7d Gender: Male Location: Brisbane Posted 16/12/16 05:26 AM Author Share Posted 16/12/16 05:26 AM This is as good as I have at the moment. I removed the bolts today so I'll be able to get another photo tonight if you want. The clutch has been in the car for 2000km, and we rev it up near 7000rpm, so it's under a bit of stress. I was going to refit the flywheel with new bolts and dowels, The surface of the crank is still flat and the damage appears worse than it looks to me. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 18y 6m 24d Gender: Male Location: Perth Posted 16/12/16 05:29 AM Share Posted 16/12/16 05:29 AM Is that how the crank looked before you bolted up the clutch? Link to comment Share on other sites More sharing options...
samhouston Donating Members 153 Member For: 14y 11m 7d Gender: Male Location: Brisbane Posted 16/12/16 05:44 AM Author Share Posted 16/12/16 05:44 AM Nope ? All that brinelling is from the flywheel coming loose Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 18y 9m 8d Gender: Male Location: OZ Posted 16/12/16 05:51 AM Share Posted 16/12/16 05:51 AM That's completely fisted, well done! Flywheel looks cooked too. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 20d Gender: Male Location: Perth Posted 16/12/16 06:08 AM Share Posted 16/12/16 06:08 AM Sorry mate but unfortunately that crankshaft is DEAD. Fretted and galled to DEATH. Link to comment Share on other sites More sharing options...
samhouston Donating Members 153 Member For: 14y 11m 7d Gender: Male Location: Brisbane Posted 16/12/16 06:08 AM Author Share Posted 16/12/16 06:08 AM It will be ok. Everything can be fixed, I'll get busy over the weekend and it will be back on the road in no time! Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,277 Member For: 16y 6d Gender: Male Location: Melbourne Posted 16/12/16 06:13 AM Share Posted 16/12/16 06:13 AM 4 minutes ago, arronm said: Sorry mate but unfortunately that crankshaft is DEAD. Fretted and galled to DEATH. surely the surface can be re-faced and recovered? Link to comment Share on other sites More sharing options...
samhouston Donating Members 153 Member For: 14y 11m 7d Gender: Male Location: Brisbane Posted 16/12/16 06:15 AM Author Share Posted 16/12/16 06:15 AM That's what I'm planning on trying anyway. The pitting looks much worse in the photo with the flash than what it is, it is minimal in most areas so there is still plenty of face for the wheel to mount against. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 20d Gender: Male Location: Perth Posted 16/12/16 06:24 AM Share Posted 16/12/16 06:24 AM Do you know the correct procedure for installing the flywheel bolts. If its not followed, loctite gets in between the crank and flywheel and that is exactly what can happen. With that much damage the chances of it coming loose again are high This was barely serviceable. and had SFA damage. Bolts came loose and fatigued. Were ARP Link to comment Share on other sites More sharing options...
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