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07-06-2013, 02:46 AM | #397 | |
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07-06-2013, 04:56 AM | #398 | |
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At first by some SC makers that blew a handful of engines it was claimed that our lubrication system is weak and our oil pump causes oil starvation. Then after hearing blown S85's which have a very different dry sump lubrication system, the oil pump theory went out of the window and bearing clearance replaced that. Who are we fooling? Ourselves? Most of the blown S65's we know are supercharged. I'm not gonna get into the cons of going FI on this engines but you can't expect raising BMEP by ~%40 won't do any harm to engine. As for the blown NA engines do we know their background history? How they were maintained etc... All we know is they failed. For every 1 blown NA engine, there are hundreds of cars doing good. BMW produced like what 65000 S65's? How many of them has failed? How many of them are running strong? Enjoy your cars gentlemen while you can. That's what i do. Drive this marvelous piece of engineering as hard as you can with no fear of what's gonna happen because nobody knows what's gonna happen. Even if your throw a rod in future which hopefully will never happen, you will at least have good moments with your car. |
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07-06-2013, 05:38 AM | #399 |
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Thank you sir.
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07-06-2013, 06:17 AM | #400 | |
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07-06-2013, 10:41 AM | #401 | ||
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07-06-2013, 11:47 AM | #402 |
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I'm carefree while under warranty. How I feel after it expires may be another story. Usually I try to fix it myself but that takes a lot of time.
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07-06-2013, 12:00 PM | #403 |
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I would not say this is a case though of this board having more failures because surprisingly MANY on this board do not seem to really over-drive their car or even drive it hard. This is a case I feel for those that hammer their cars and enjoy the 8400 rpm redline, IF it is a bearing clearance issue, than the risk seems really real. Although many track their cars and don't have the issue I understand.
It has not influenced my enjoyment factor and I personally feel better having X warrarty by factory bmw to 100k and that allows me to enjoy the thing. By the time warranty is out, blowing an engine won't be a huge deal if I keep this car as a track warrior only car (not that I welcome that but not nearly as big of a deal in early ownership when engines are 25k). So I don't worry but if you are someone who is stretching to pay your way into a used m3 without warranty and plan to drive it hard, I certainly would be wary. |
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07-06-2013, 12:02 PM | #404 |
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Mike can you elaborate? I just can't see a mechanism how use of lead several fuel cycles ago would lead to sustained lead in an oil analysis. Trace the path for lead to get into the oil from the fuel used one time and I am just curiuos how that is even plausible?
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07-11-2013, 07:02 PM | #405 | |
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My oil analyses show high lead AND copper. Maybe I made it into the intermediate layer.
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07-11-2013, 07:34 PM | #406 | |
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Not good. My copper readings are perfect. I think I'm going to change my bearings to the VAC ones February of next year, or before introducing boost. Whichever comes first.
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07-11-2013, 07:40 PM | #407 | |
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As long as you realize that you are just putting on a band-aid, I guess doing the bearings is okay. I personally don't like the idea of putting bearings into a motor still in the car, on a lift.
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07-11-2013, 07:57 PM | #408 | |
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07-11-2013, 08:21 PM | #409 | |
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07-11-2013, 09:00 PM | #410 | |
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just wondering |
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07-12-2013, 07:02 AM | #411 | ||
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07-12-2013, 06:36 PM | #412 | |
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So measuring fuel dilution in the oil will still give you an indication of the health of the rings right? But the fuel in the oil is fuel that has recently been deposited there.
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07-12-2013, 08:31 PM | #413 |
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I respectfully don't think it's a blown up issue. I know of a few more NA cars that had bearing failures at low mileage. This is a serious issue. The bearings that are coming out of these cars with even low mileage look terrible.
I guess it's not a surprise, look at BMW's history with rod bearing issues on M engines.
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07-12-2013, 08:50 PM | #414 |
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Keep it simple...
http://www.m3post.com/forums/showthread.php?t=682601 |
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07-12-2013, 10:24 PM | #415 | |
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07-13-2013, 12:31 AM | #416 |
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I have an 8600 rpm tune but honestly the best part is simply being able to hit 8400 without slamming the fuel cutoff lol. Even when I try hti 8600, when I log it the max I hit is usually 8500 so I think the feature really does not add to wear but gives you ability to actually hit 8400 without timing it perfectly which is impossible
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07-13-2013, 02:21 AM | #417 | |
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Good feedback.
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07-13-2013, 05:38 PM | #418 |
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I can set it to whatever you request.
My car has it set to 8,800 I believe. But I don't go up there, mainly to 8,400 usually but nice to know it's there if I need it. What Longwong said about the fuel cutoff is pretty spot on. Instead of that pull back feeling that you get with the stock software at redline, it keeps pulling to it and then you can shift for best results
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