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11-18-2013, 01:49 PM | #1035 | ||||
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a) E46 never came in sedan form b) the E92 is a coupe Quote:
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Last edited by whats77inaname; 11-18-2013 at 02:00 PM.. |
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11-18-2013, 03:07 PM | #1036 | |||
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Here's some OEM rods for you that pinched equally or worse that the Carrillo's. NA motor too. BOOM! S65, 31000 Miles, Naturally Aspirated, 2008. More Photos Factory Bearings: 088/089 Category: 04-Moderate Description: 27,000 Miles Naturally Aspirated, 4000 Miles Supercharged |
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11-18-2013, 03:33 PM | #1037 | |
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Is their design sufficient for 300k mi of longevity at 15k mi oil changes? Do aftermarket rods offer an improved big bore (or overall) stiffness? and other such related questions are interesting but I won't speculate on them.
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11-18-2013, 03:37 PM | #1038 | |
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11-18-2013, 04:36 PM | #1039 | |
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If your original Carillo rods weren't up to the job, surely ESS etc shouldn't be strapping blowers on with apparently inferior oem rods? |
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11-18-2013, 04:54 PM | #1040 | ||
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Drives: 2011 E90 M3,1994 Euro E36 M3/4
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Of course a carillo rod is stiffer. That is carillo's business, they make rods that are stronger than what engines are specced with from OEM! Did BMW not have a recall where E46 rod bolts were replaced with stronger ones? I am sure they did there testing in the S54 too...... But they ended up beefing up those rod bolts three years into production! |
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11-18-2013, 05:54 PM | #1041 | |||
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11-18-2013, 05:55 PM | #1042 | |||||
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11-18-2013, 06:11 PM | #1043 | ||
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11-18-2013, 06:39 PM | #1044 | |
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I've spent plenty of posts here on the forum with harsh and appropriate (IMHO of course) words critical to BMW M for their obsession with cost and its detrimental effects on their cars. I've also blasted their marketing nonsense as well. My favorite topics there are that 50-50 weight balance is somehow ideal for a performance oriented car. I've also posted on their very dubious claims of weight loss in the E92 M3 (it was a lack of even additional weight gain...). I've also posted quite a bit on why composites still are not widely used in BMW M cars (they do exist and have since the E46 bumper support beams). The issue there is just volume (volume, volume, volume). Anyway, I understand the cost vs. feature/performance see-saw pretty well. Having some professional mechanical and manufacturing engineering experience of real production parts helps as well. Again, it is likely Carillo rods are stiffer than OEM but I wouldn't guarantee it in all cases. Also, you need to stop mixing/confusing stiffer with stronger, these things are not interchangeable. Since you've already decided that Carillo rods are far superior to BMWs I suggest you see what technical data Carillo will share with you for your exact chosen rods vs. the stock ones. Please report back. My point of this line of questioning is that they certainly have a good reputation, but you are likely just jumping on their bandwagon being their fanboy with no evidence. I do not recall a S54 rod bolt recall or major part change. Could be but the rod and bolt system are best designed as a matched set. I'm no BMW fanboy and have never claimed BMW never screw up. They have and will continue to do so, it is almost a given, given the breadth, depth and complexity of their business and engineering. Perhaps the key question on this point is do they screw up more or less often than their peers and are the screw up more or less serious.
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11-18-2013, 11:12 PM | #1045 | ||||||||||||||||||||||||||||||||
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These are the second piston-top and bearing photos I promised. Unlike the first set, this one has spark plug photos available too. Click on any of the images to view full size images (maybe too big). These aren't the only piston photos; there's a complete album of them showing the pistons from different angles and different light. Piston Photos HERE.
S65, 30000 Miles, Bone Stock, 2008. More Photos Factory Bearings: 088/089 Category: 04/05-Moderate Description: Bone stock engine disassembled to make stroker motor.
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11-19-2013, 12:04 AM | #1046 | |
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In looking @ the S54 rod bearing issues and recall, I found something interesting: http://www.m3forum.net/m3forum/showp...1&postcount=20 In this thread, no one had ever mentioned the reason for the recall, so I wanted to know specifically what the issue was and how was it remedied. BMW also changed the ECM to adjust the cold start for those who thought they were having cold start issues. This was done free of charge even if an S54 wasn't part of the recall. |
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11-19-2013, 12:08 AM | #1047 |
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11-19-2013, 02:49 AM | #1048 | |
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Originally Posted by SenorFunkyPants
So just to be absolutely clear...at maximum supercharger boost the effective CR does not exceed that of the standard engine? Quote:
Try again: [Please confirm that] at maximum supercharger boost the EFFECTIVE CR does not exceed that of the standard engine? Last edited by SenorFunkyPants; 11-19-2013 at 03:02 AM.. |
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11-19-2013, 03:01 AM | #1049 |
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Posted by SenorFunkyPants
Oh and the shop started up and stopped the car every day for 2.5 months! really? If so, I hope the cats had been removed else they would be most likely shagged. So you are saying that the car already had the cats removed? Nevertheless the shop spent 2.5 months starting the car, driving in and out of the shop every day and then stopping it. But curiously the piston crowns don't show any indications of 75 start/stops on the rich cold start cycle. Last edited by SenorFunkyPants; 11-19-2013 at 03:24 AM.. |
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11-19-2013, 03:19 AM | #1050 | |
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Originally Posted by SenorFunkyPants
Am I understanding this correctly - This "ground zero" engine was not using BMW standard rods but Carillo aftermarket rods? If so why are its bearing data/pictures even being included? Quote:
I can see how the bearing wear that was found, pointed you in the direction you have taken, but presenting pictures of the actual bearing wear as proof is invalid due to the use of non stock parts. You simply can't use pattern parts as proof that the oem parts are "faulty". |
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11-19-2013, 03:51 AM | #1051 | ||
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Last edited by Yellow Snow; 11-19-2013 at 05:02 AM.. |
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11-19-2013, 07:14 AM | #1052 | |
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Carrillo is a very reputable brand and makes some of the best rods out there. |
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11-19-2013, 07:24 AM | #1053 |
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11-19-2013, 07:38 AM | #1054 |
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11-19-2013, 09:03 AM | #1055 | ||||||
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Should we expect any answers from you any time soon on the many unanswered questions for your evolving theory? Do you ever plan to circle any spots you see detonation on those pistons? What's next? Now that you're locked in to an explanation of the previous piston pictures, the new piston pictures should make your head spin trying to explain without contradicting what you said yesterday. I truly can't wait to see what comes next. |
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11-19-2013, 09:28 AM | #1056 |
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