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09-22-2020, 02:09 PM | #89 |
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ok. So I am getting ready to have the engine replaced. I've decided on either having dealership replace it with remaned engine, or indy shop with carbahn 4.2l and gamble on saving a few thousand if my old core is viable. My number 1 concern is reliability. Does anyone have any experience with the carbahn 4.2l engine in terms of reliability? I cannot find much information on dinan/carbahn engines on these forums. The way I drive I am expecting/hoping for at least 150,000 miles out of a replacement engine.
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09-22-2020, 02:24 PM | #90 | |
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09-22-2020, 02:33 PM | #91 |
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That's good to hear. I am anxious to drive again. I am hoping to pull the trigger on the engine in a couple days. on Carbahn's site, dyno showed 471 hp with race gas, while I am not concerned about any power increase if there is any but I am wondering if it would be noticeable over stock.
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09-22-2020, 02:38 PM | #92 | |
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09-22-2020, 03:03 PM | #93 | |
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Someone driving on a rebuilt engine with over 100k may chime in to state their experience but I've never seen one- just carnage from failed rebuilds. Just another factor to consider. |
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09-22-2020, 03:45 PM | #94 | |
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Last edited by bmwm3s65; 09-22-2020 at 04:08 PM.. |
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09-22-2020, 03:55 PM | #95 | ||
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09-22-2020, 03:59 PM | #96 | |
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09-22-2020, 05:35 PM | #98 | |
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There are lots of people selling stroker kits and rebuilds and all this crap, but where are the cars that have survived for a few years with those engines? Carbahn/Dinan is the most likely to offer a S65 of similar quality to BMW as they were hired by M Motorsports to run the P65 engine program, so they know these engines extremely well. |
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09-22-2020, 06:42 PM | #99 | |
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09-22-2020, 07:47 PM | #100 |
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Now I am second guessing. I am leaning towards a bmw engine, but after the warranty I would definitely want to do rod bearings at some point while I hopefully wouldn't have to open the carbahn engine to do anything.
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09-22-2020, 07:53 PM | #101 |
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My end goal in this car would still be a stroker engine. while I hope the engine would last to at least 100k, if the engine stays healthy until I at least pay the car and engine off in a couple years, I might be ready to get a stroker at that point so a stock bmw engine may be the way to . Man why does this have to be so hard!
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09-22-2020, 07:53 PM | #102 | ||
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09-22-2020, 11:24 PM | #103 | |
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09-23-2020, 02:25 AM | #104 |
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One thing to consider which you just mentioned - you’re still paying off the car which now has a bad engine and you would be paying off a 27k engine build plus labor and extras. Let’s call it 35k on top of whatever you might owe on the car. You should weigh your options to make sure it’s a good investment before proceeding.
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09-23-2020, 05:33 AM | #105 | |
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09-23-2020, 10:38 AM | #106 | |
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My recollection is that a rebuilt "stock" motor is on the order of $15k. Stokers about $25k. The most economical option is to pick up a used motor and have the rod bearings replaced before installing. Depending on mileage one should be able to get the motor and new bearings for under $10k. Some might say that option has the most risk as one cannot be sure of the motors history. The other "interesting" route would be some sort of LS install, but only a few examples exist and my recollection is that the cost would be on the order of a rebuilt motor or even stroker depending one found a used or a crate engine. I hope you can find a solution for your car that you're happy with. |
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09-23-2020, 03:20 PM | #107 | ||
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There's also a difference between someone that can build an engine for racing and maximum output, and one who builds one for maximum longevity. There's no shortage of people who will claim the highest outputs etc, but it's a whole different story when you try to get someone to stand behind a build for 100k miles. |
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09-23-2020, 04:27 PM | #108 | |
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09-24-2020, 01:50 PM | #110 |
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Any reason to pay 1k to keep my old engine? I have a hoist and an engine stand to put it on and the engine still runs so I would think I could get at least 1k out of it if i sell it, just not sure if its worth the hassle.
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