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04-01-2021, 01:35 PM | #111 |
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Burble tunes 🙄🙄
great way to ignite the rear of your car
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04-01-2021, 04:59 PM | #112 |
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As usual, no OEM is insane enough to take it as far as the aftermarket does. OE burbles/pops/bangs are rarely much louder than the rest of the exhaust, and I don't think any other than Lamborghini will shoot flames stock.
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04-05-2021, 03:22 PM | #113 |
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04-05-2021, 04:57 PM | #114 |
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Mate . You nailed it ...
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Assimilator1615.50 DrFerry6748.00 |
09-13-2023, 12:07 PM | #115 |
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09-13-2023, 04:15 PM | #116 |
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So 5 years have gone by since your B.E. bearing spun. I read the whole thread and am still wanting to know, "did a main bearing fail or not?"
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Last edited by DrFerry; 09-13-2023 at 04:23 PM.. |
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09-13-2023, 04:52 PM | #117 |
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Same!
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
02-27-2024, 03:04 PM | #118 | |
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Did you ever hear back from the buyer about your old engine?
I belatedly noticed this ad (after I'd PM'd him) by him for the old engine parts. He states there and in the PM that the mains had indeed failed. Quote:
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. Last edited by Assimilator1; 02-27-2024 at 03:32 PM.. |
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02-27-2024, 03:25 PM | #119 |
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Updated my previous message.
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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02-29-2024, 12:22 PM | #120 |
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I wonder how many engines had failed main bearings after fitting the larger clearance rod bearings?
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charliev68243.50 IamFODI370.50 |
02-29-2024, 03:04 PM | #121 |
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03-03-2024, 10:17 PM | #122 |
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You change them again? If so, how did they look?
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03-03-2024, 10:20 PM | #123 | |
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Quote:
Also, all of the oil that goes to the rod has to go through the mains.
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RocketyMan280.00 Assimilator1615.50 |
03-04-2024, 03:08 AM | #124 | |
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Didn't BE measure and report a drop in oil pressure when running with extra clearance bearings? Or have they since edited the original report to remove it. Dropping the pressure at the rod bearings will have an effect on the upstream pressure at the mains. Increasing the flow to offset the drop in pressure at the rod bearings carries its own problems. Last edited by Sneaky Pete; 03-06-2024 at 03:16 AM.. |
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03-04-2024, 04:59 PM | #125 |
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Have not. Forgot I made this empty promise. But I swear…I’m getting close. I’m at 107k now. Making arrangements to do this and bunch of stuff in Apr/May/Jun.
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03-13-2024, 02:40 PM | #126 | |
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If not, their data shows (from memory) just a 3-4% drop in pressure. The rod bearings are up stream of the mains, not the other way around (maybe you just typo'd?). I don't see that increasing the flow (to compensate for faster oil loss at the rod bearings) would cause any problems, other than quicker removal of heat. What problems do you think it could cause? Very few, literally just a few, which is far fewer than the engines that have failed with OEM rod bearings.
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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03-13-2024, 05:47 PM | #127 | ||
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Didn't they just have a flow/pressure meter after the oil filter? Not exactly that much use in measuring oil pressure at the bearings themselves. Quote:
Anyway lost interest in this story now...I can see that folk still want to believe the too tight RB clearance even now. So I'll leave you all to carry on...much to the relief of some people no doubt. |
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03-13-2024, 09:42 PM | #128 |
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Sreten from M539 Restorations mentioned during his S65 rebuild that the timing chain pulls up on the crank and consequently causes more wear on that main bearing and the wear decreases are you move down the line.
He pulled the mains on a S65 and you could see a reduction in wear moving from front to back.
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03-14-2024, 04:12 AM | #129 | |
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Btw bumped into another main fail here, VAC non extended RBs in this case (who later upgraded donor engine with VAC again). https://youtu.be/4be6Dyu_990?si=CdkwbP-jlp2GcqOw |
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F32Fleet3789.50 Assimilator1615.50 |
03-16-2024, 03:48 PM | #130 | |
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I can't see anyone being able to measure pressure at the main bearings, maybe BMW if they tapped into the oil feed to a mains?? Whatever the oil pressure is in the main oil gallery will be what it is at the mains oil feed (near enough). I'm pretty sure that their are individual oil feeds for each main bearing (same with pretty much any modern-ish engine AFAIK), each main bearing then goes onto feed a pair of rod bearings. So their would not be less flow to the mains as the rod bearings are in series to the mains (and after), not parallel. If the oil pump couldn't keep up with the increased flow at the rod bearings, then yes pressure would drop at the mains (& throughout the system). But that isn't the case with BE v1, bar a few %. Btw, FWIW, I think the case for too tight clearances has been weakened, but not written off yet. Bearing in mind that Mahle MS bearings have increased clearance anyway. But the corrosion damage to bearings definitely warrants more thought and investigation (something that could be done with oil analysis).
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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03-16-2024, 09:36 PM | #132 |
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Yea AFAIK it does, but by a miniscule amount, IIRC 2-3 microns.
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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