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27th April 2019, 01:34 | #11 | |
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Its possible what we have both deduced that the culprit "may" be over tightening. Because admittedly most of the time I've taken it on and off with a battery powered drill but still on a low torque setting. And yes with the bolt in, not the slightest sign of any oil. Non existent ( even just finger tight) So I can Live with and manage yet another quirk with our cars before even starting this thread. But it would have been nice to hear more constructive posts from others. like yourself. Still not got to the bottom of it ( no pun intended) what is at the bottom ? plastic ,gasket, it cant be brass like the thread I've never had a long bar on it ? I am still of the opinion that the bolt or housing should shear, shatter or break before causing an engine oil leak. Therefore in my humble opinion a very bad design. Thanks Paul
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27th April 2019, 07:22 | #12 |
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Morning all, I have also found that overtightening the bolt can compress the cover a little, maybe this causes the penetration of the brass base?
If I get chance later I’ll get the vernier calipers out and measure a non punctured insert.
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27th April 2019, 07:34 | #13 | |
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great speaking to an expert Thankyou.
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27th April 2019, 07:38 | #14 |
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For us diesel owners should we replace the original bolts with ones a mm or 2 shorter or stick a washer under the bolt head?
I only do mine by hand as a power tool seems overkill but I will bear this in mind, do not over tighten. macafee2 |
27th April 2019, 07:39 | #15 | |
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As for fixing it (I currently have 4 cars with this engine but luckily they are all oil tight) I would probably live with it and make sure the bolt is in when the engine is running, or I would make up a thin shouldered 6mm threaded stud and Loctite that in then use a nut to fasten the cover at that point. . Last edited by Mike Noc; 27th April 2019 at 15:04.. |
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27th April 2019, 07:43 | #16 |
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i have pondered over this issue for quite sometime(i dont get out much)
so i can add i noticed on my last 75 when removing the cover one of the bolts has a lot thicker flange at the top .so that goes in the hole nxt to the oil filler.
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27th April 2019, 07:51 | #17 |
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Who uses a drill to tighten such a bolt? Asking for trouble. Most of the 75's I've owned have this 'problem', it doesn't usually leak as long as the bolt is in place. Just pop a 6mm o ring on the bolt once it's in the cover then replace, even this is unnecessary. Much ado about nuffin', no drama.
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27th April 2019, 07:54 | #18 |
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From memory, my CDT was fitted with 2 long and 1 short bolt from new.
Is it possible, while under warranty, that you had the car serviced and the bolts were mixed, causing the damage? The mechanic may have realised his error and replaced the long bolts with short ones. Or even the mechanic at the next service, assuming a 3 year warranty. Last edited by tourer; 27th April 2019 at 08:23.. |
27th April 2019, 08:54 | #19 | |
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A washer or two under or better over the cover sounds like a good idea to stop the bolt pushing down to far. because under the cover there is a rubber washer. All my bolts are exactly the same length so why its happened is a mystery, other than over tightening which would have been negligible because I always use it on a low torque setting. Don't forget we use a power tool to clean our teeth, it all depends on the torque setting. I'm approaching 180k from new and must have had the cover off at least 20 times . So again I'm amazed how this has come about. Being only a cosmetic acoustic non mechanical part. I still stand by my original quote. even if Id done 5 million miles. Its a mad bad bonkers design , .Paul P.s to others wait till it hits you in the rear and then give your 2nd opinion.
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27th April 2019, 09:08 | #20 | |
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