au-yt 485 Posted March 22, 2020 Report Share Posted March 22, 2020 Interesting to watch 2 Quote Link to post Share on other sites
EGTE 145 Posted March 22, 2020 Report Share Posted March 22, 2020 Did some research: The big causes of spun bearings are: Bad tune causing detonation which hammers the bearings flat and screws up the clearances (more often than not a bad tune will crack a piston ringland before it will cause you to spin a bearing) Low oil pressure - this can be caused by low oil, a cracked oil pickup tube, or too much high lateral G driving pushing the oil to one side of the pan and starving the pickup tube Using oil that is too thin to protect the motor adequately Quote Link to post Share on other sites
au-yt 485 Posted March 22, 2020 Author Report Share Posted March 22, 2020 Quick check it was no 1 that spun, I had not considered the tune good point however my guess is oil surge Quote Link to post Share on other sites
EGTE 145 Posted March 24, 2020 Report Share Posted March 24, 2020 Yes, probably right. Quote Link to post Share on other sites
Kristof Thys 182 Posted March 24, 2020 Report Share Posted March 24, 2020 Just trying to think with you guys: I know of one local Exige V6 which blew the motor on track in 2013. No idea what the problem was. Also the dealer is a bit hush hush about it and no really open to give more info. But... ever since all three Belgian dealers have switched from the (in the technical handbook) recommended 5W-40 to Castrol Edge 10W-60. Coincidence? 1 Quote Link to post Share on other sites
EGTE 145 Posted March 25, 2020 Report Share Posted March 25, 2020 Thats' quite a change of spec! 1 Quote Link to post Share on other sites
au-yt 485 Posted March 25, 2020 Author Report Share Posted March 25, 2020 Oil spec change is interesting 60 weight for the hot end is quite heavy I use that in my Lotus Twin Cam, it does reduce the power a small amount but give higher oil pressure Interesting my last service for my 400 they used GULF Formula ULE 5w-40 Quote Link to post Share on other sites
EGTE 145 Posted March 26, 2020 Report Share Posted March 26, 2020 I do wonder if the variable valve-timing won't struggle with such a thicker spec. Quote Link to post Share on other sites
Kristof Thys 182 Posted March 26, 2020 Report Share Posted March 26, 2020 8 hours ago, EGTE said: I do wonder if the variable valve-timing won't struggle with such a thicker spec. See your Warranty Booklet section 2 “intended purpose”: the recommended fully synthetic engine oil is Castrol Edge 10W/60 under "heavy load" circumstances 1 Quote Link to post Share on other sites
EGTE 145 Posted March 27, 2020 Report Share Posted March 27, 2020 Mine's a 2010 and I've had it 2 years, so needless to say I hadn't read that! Good info, though. Quote Link to post Share on other sites
DBG 112 Posted April 6, 2020 Report Share Posted April 6, 2020 I was surprised when Gulf was put in mine last service also. Think I’ll supply my own oil next time. Will do some more research. Quote Link to post Share on other sites
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