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01-02-2019, 05:33 PM | #155 |
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im confused, so does Scrippy have BE or WPC bearings? his 2 posts linked here state different bearings and mileage...
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Current Garage - [2011 E90 M3 ZCP] [2005 E53 X5 3.0 Sport] [1988 E30 325IS 24V] |
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01-02-2019, 08:18 PM | #156 | |||
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Quote:
Quote:
Quote:
https://www.m3post.com/forums/showpost.php?p=17946174 |
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01-02-2019, 08:58 PM | #157 | |
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https://www.m3post.com/forums/showpo...6&postcount=23 |
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01-05-2019, 12:18 AM | #159 |
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SVT, have you ever had the internal logging data pulled from your car? For example, the car stores the number of misfires per cylinder, number of misfires that could cause potential catalyst damage per cylinder, and a number of other things that would be interesting to know.
BMW's calibration has a huge loophole for misfire detection in my opinion, and I think that this could be beating up internals over a long period of time. For instance, I have seen a number of instances where there are 5 times the amount of events occurring in one cylinder as compared to another. I've also seen instances where it's 50x more, but the car doesn't throw a fault because it escapes the criteria needed for events per number of crankshaft revolutions. In my case years ago, when my bearings were pulled, #3 was the worst looking one, and the data revealed that #3 had more combustion issues over time. Another interesting thing to note is injector quality. We had a car that we chased for a long period of time to isolate a knock issue. It wouldn't do it full throttle, but at certain loads it was pretty apparent. Changed plugs, coils, o2 sensors, etc... Issue still persisted. Customer asked that we make a custom file to pull timing in certain areas. This solved the issue for the most part, but of course had a performance reduction. The injectors were sent out to get flow tested, and it turned out that half of the injectors had severely reduced flow, one of them was 30+% down. This is something that could also contribute to failures over time and fly under the fault code radar unnoticed.
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01-05-2019, 08:22 AM | #161 | |
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01-06-2019, 11:11 PM | #162 |
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It's a complaint we've seen in stock form over the years, mainly with light to medium throttle between 2,000 and 2,800 RPM.
I could audibly hear the knock, have a very "tuned" ear to it. Walking down the street I hear cars knocking left and right..
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01-08-2019, 12:41 AM | #163 | |
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It would be interesting to see if its a regular effect. |
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01-26-2019, 07:15 PM | #164 |
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Wow, a lot of learning while reading this thread.
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2011 MR e90ZCP, 6-mt
2011.75 e90 M3 ZCP, DCT, ZP2, ZCV, JB w/ 2Toned FoxRed/Black Interior - SOLD |
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03-09-2019, 07:44 PM | #166 |
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the engine is still in the car but should be out shortly for the new one to go in
it's hard to believe it's almost been a year since this happened. Good thing I have another M3 to keep me going! |
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03-09-2019, 08:35 PM | #167 | |
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How many double session track days did this motor see? Not that it matters but just wanna know how much fun you got out of it before she checked out |
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03-09-2019, 08:43 PM | #168 | |
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Plenty of fun for sure. Can't wait for the new one! |
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03-09-2019, 08:47 PM | #169 |
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Next time would it be possible to record audio of this?
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03-11-2019, 11:08 AM | #170 |
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Yeah, realize it must be a bummer to get the blown out, looking forward to see those rod shells though!
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03-12-2019, 02:16 PM | #171 | |
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Naturally Agitated - S54B34 CSL Clone - 395 285 SAE on 91 pump - 3150 lbs - P car and E9X eater.
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03-12-2019, 02:44 PM | #172 |
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Interesting thing in the case of the S65 is the schrick guy couldn't believe people say you can't use 292s and retain vanos. He was almost upset
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03-12-2019, 03:32 PM | #173 | |
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I've been running 284/292 14.5mm lift cams with dual vanos (Crower) for years. Neat thing with Crower (and Cat), they will help you test and verify adequate clearance when going big... especially with higher comp and custom pistons. Call schrick about big cams, vanos and custom pistons and they will tell you to LS swap it.
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Naturally Agitated - S54B34 CSL Clone - 395 285 SAE on 91 pump - 3150 lbs - P car and E9X eater.
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06-05-2019, 08:10 AM | #174 |
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The car is operational again! Finally got the new engine swapped in. I have not taken apart the old one, it'll happen one day and I'll post the results here. It feels wonderful to have 3 M3s that run!!! |
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06-05-2019, 09:19 AM | #175 | |
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Mike, can I pay to have a diagnostic report specific to the injectors? Or is the misfires report all that can be used to determine the performance of them? I'm really wondering now about this issue and in relation to lean fuel/air mixes in individual cylinders and how this may affect bearings. Is there a mileage or service interval that even addresses when injectors need to be pulled and checked for even and consistent spray patterns? BTW - Mike, thanks again for coding my Sirius/XM satellite code last year! It's been great having Stern, Sports and Fox News Channels !!
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06-05-2019, 01:15 PM | #176 | |
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my old injectors' "horrendous" flow test results were posted in another thread last yr, see post #47 https://www.m3post.com/forums/showth...1532390&page=3 Unless they are pulled out of the engine, there's really no other way to tell how your injectors are actually doing, i feel. My bearings were changed back in 2015 with whatever EAS was recommending at the time, this was well before BEs came out, and I've ran my engine with the ridiculous pre-det knocking for 3 full years (+40k miles) after that. At some point in the future I do plan on pulling the current bearings out to see how they have fared + swapping in the BEs Looking forward to see SYT's old engine tear down results
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