2rismo Posted December 3, 2008 Share Posted December 3, 2008 If it was lean mixtures and detonation there will almost certainly be other stigmata present. It's wrong to speculate until you have someone with a clue look at it. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4297781 Share on other sites More sharing options...
N1GTR Posted December 3, 2008 Share Posted December 3, 2008 Harris do a lot of RB30's and they're close to you Joe. Worth a call. Although keep in mind they dont like to stay on the phone for long cause they're always busy Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4297813 Share on other sites More sharing options...
2rismo Posted December 3, 2008 Share Posted December 3, 2008 Just spoke to my engine builder about another matter and mentioned your situation. Whether or not detonation/lean mixtures caused the problem, for your engine builder to claim that they did there needs to be clear and irrefutable evidence of same. If there isn't any evidence of this then it's a cop-out and they're full of shit. If there is evidence of it then you haven't got a leg to stand on. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4297830 Share on other sites More sharing options...
Swiper the Fox Posted December 3, 2008 Share Posted December 3, 2008 Just spoke to my engine builder about another matter and mentioned your situation. Whether or not detonation/lean mixtures caused the problem, for your engine builder to claim that they did there needs to be clear and irrefutable evidence of same.If there isn't any evidence of this then it's a cop-out and they're full of shit. If there is evidence of it then you haven't got a leg to stand on. Isn't he your dentist? Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4297859 Share on other sites More sharing options...
SECURITY Posted December 3, 2008 Author Share Posted December 3, 2008 Harris do a lot of RB30's and they're close to you Joe. Worth a call. Although keep in mind they dont like to stay on the phone for long cause they're always busy Thanks Steve, if the engineer returns with results in my favour then i'll give them a call. Just spoke to my engine builder about another matter and mentioned your situation. Whether or not detonation/lean mixtures caused the problem, for your engine builder to claim that they did there needs to be clear and irrefutable evidence of same.If there isn't any evidence of this then it's a cop-out and they're full of shit. If there is evidence of it then you haven't got a leg to stand on. As far as he has told me, he doesnt have an actual report. He says that he's had 2 guys look at it, an engineer (i think) and someone from the NRMA and both said it was caused by detonation whereas the engineer that will provide me with a report said that detonation would not cause the main bearings to go, it would cause the big end bearings to go if anything. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4298246 Share on other sites More sharing options...
2rismo Posted December 3, 2008 Share Posted December 3, 2008 whereas the engineer that will provide me with a report said that detonation would not cause the main bearings to go, it would cause the big end bearings to go if anything. Yep. That's what I would've thought. But here's the thing, dude. It doesn't matter what's caused it, if it has detonated its ring out then there's sweet f**k all you can do. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4298285 Share on other sites More sharing options...
SECURITY Posted December 3, 2008 Author Share Posted December 3, 2008 Yep. That's what I would've thought. But here's the thing, dude. It doesn't matter what's caused it, if it has detonated its ring out then there's sweet f**k all you can do. he said the pistons and rings are fine as well as the bores so i highly doubt it was detonation. the only part in the entire motor that failed were 2 of the main bearings. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4298543 Share on other sites More sharing options...
2rismo Posted December 3, 2008 Share Posted December 3, 2008 Well I reckon he's completely full of shit then. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4298907 Share on other sites More sharing options...
2rismo Posted December 3, 2008 Share Posted December 3, 2008 Isn't he your dentist? Sorry, penny dropped (once you spelled it out for me anyway). Yes, yes he is! Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4298977 Share on other sites More sharing options...
SECURITY Posted December 3, 2008 Author Share Posted December 3, 2008 (edited) Engineer will have a report ready for me by wednesday i hope. i'll ring him today and see if he'll go earlier. no point in speculating if we dont know 100% what happened. Edited December 3, 2008 by SECURITY Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4298998 Share on other sites More sharing options...
bubba Posted December 4, 2008 Share Posted December 4, 2008 Which main bearings were killed? and did it start with the thrust surfaces? Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4299339 Share on other sites More sharing options...
SECURITY Posted December 4, 2008 Author Share Posted December 4, 2008 he says it was worst on bearing 4 and 5, or near cyl 4 and 5 - i dont remember. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4299452 Share on other sites More sharing options...
Richieb Posted December 25, 2008 Share Posted December 25, 2008 ...........and..? Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4335687 Share on other sites More sharing options...
WARLORD Posted December 25, 2008 Share Posted December 25, 2008 ...........and..? +1 Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4335777 Share on other sites More sharing options...
Duncan Posted December 29, 2008 Share Posted December 29, 2008 I'm sure Joe will give an update sooner or later, but I understand the engineer confirmed there was nothing wrong with the build, the issue was un-related. It would be good to see the details posted since the reason I heard was unusual and an interesting warning about how small things can build up to a dead motor Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4339396 Share on other sites More sharing options...
SECURITY Posted December 29, 2008 Author Share Posted December 29, 2008 Engineer report in: results are: bearing failure caused by overfueling/incomplete combustion + a restriction in the oil pickup which caused low oil flow at high RPM. the over fueling + the oil pickup restriction caused the motor to fail. I'll post up the engineer report once ive edited out my details etc. Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4339449 Share on other sites More sharing options...
SECURITY Posted December 30, 2008 Author Share Posted December 30, 2008 (edited) there it is guys: conclusion is the crutial part and states why the motor failed. Engineer_Report.pdf Edited December 30, 2008 by SECURITY Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4340035 Share on other sites More sharing options...
Swiper the Fox Posted December 30, 2008 Share Posted December 30, 2008 (edited) who tuned the new engine? As from what im reading there it has had problems since it was installed as the 8000klms travelled on an overfueled engine. This is critical on initial run-in as an excessively fueled engine will not allow rings to bed-in and the overfueled combustion chamber to release fuel mixture into sump area on compression stroke. Edited December 30, 2008 by DiRTgarage Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4340076 Share on other sites More sharing options...
SECURITY Posted December 30, 2008 Author Share Posted December 30, 2008 who tuned the new engine? why would you ask that? do you think its tune related? Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4340083 Share on other sites More sharing options...
s13_Skyline_inside Posted December 30, 2008 Share Posted December 30, 2008 so the shop who built the engine aren't at fault, did you use someone to tune it? thats a pain in the ass my condolences Link to comment https://www.sau.com.au/forums/topic/246995-crankshaft-whip/page/2/#findComment-4340099 Share on other sites More sharing options...
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