|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Engine blown - *pics inside* - discussion
|
|
09-27-2013, 09:26 PM | #67 | |
Private
9
Rep 83
Posts |
Quote:
|
|
Appreciate
0
|
09-27-2013, 09:39 PM | #68 |
Lieutenant Colonel
76
Rep 1,883
Posts |
No sure way of knowing. But by the looks of the pics, I'd say it happened over an extended period of time.
__________________
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
|
Appreciate
0
|
09-27-2013, 11:31 PM | #69 | |
Brigadier General
126
Rep 3,099
Posts |
Quote:
|
|
Appreciate
0
|
09-28-2013, 12:39 AM | #70 |
Lieutenant Colonel
65
Rep 1,708
Posts |
Good luck with the new engine Stratos!
If i recal correctly, you ran the car pretty hard at high speeds for long durations. Can you add some comments here... speeds and durations at WOT? |
Appreciate
0
|
09-28-2013, 03:38 AM | #71 |
First Lieutenant
36
Rep 332
Posts |
@GeorgiaTech335coupe: Rebuilding the engine with forged internals and machining the cylinders is as expensive as buying a very low mileage long block and installing it. But with rebuilding engine it will not be as reliable as a used one in my opinion. Machining or replacing the sleeve is an option that I'm afraid to take.
Sorry for your loss, the failure has exactly the same pattern as mine. @Joshboody: No, you are a bit mistaken. I was using my car for daily driving and some 2-3-4 hard pulls once a month for some "action" with other tuned cars or exotics. I speeded up to 314 km/h twice one year ago (v-box confirmed) and hard accelerated the car a few times a week and that's all. I think that there are many more cars with harder abuse and tunes it this website like racecars and demo tuner cars. The engine failed during cruising (blue smoke) and blew on a short 3d gear pull
__________________
|
Appreciate
0
|
10-01-2013, 03:51 PM | #72 |
Lieutenant Colonel
76
Rep 1,883
Posts |
CP pistons w/all options, 9.5:1
Carillo Rods some other things too.
__________________
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
|
Appreciate
0
|
10-01-2013, 03:55 PM | #73 | |
Lieutenant Colonel
76
Rep 1,883
Posts |
Quote:
Not to mention the downtime is far longer. Buy a used block and you can be up in a couple weeks. If I could go back in time, I probably would've just found another used long block and dropped it in. Oh well, I'm married to the project now.
__________________
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
|
|
Appreciate
0
|
10-01-2013, 11:01 PM | #75 | ||
Brigadier General
126
Rep 3,099
Posts |
Quote:
Quote:
|
||
Appreciate
0
|
10-01-2013, 11:51 PM | #76 | |
Reborn
84
Rep 1,217
Posts |
Quote:
I'd also swap in a stock long block. |
|
Appreciate
0
|
10-02-2013, 01:17 AM | #77 | |
Brigadier General
126
Rep 3,099
Posts |
Quote:
a built motor will usually be run a LOT harder a built motor at stock or lightly tuned levels will outlast the non built one... but at that point, it's a silly comparison... high power levels, the built motor will also obviously outlast. increased wear can't just 'happen' because it's a built motor, it's because it's run really hard? |
|
Appreciate
0
|
10-02-2013, 01:27 PM | #78 | |
First Lieutenant
11
Rep 368
Posts |
Quote:
|
|
Appreciate
0
|
10-02-2013, 02:49 PM | #79 |
First Lieutenant
36
Rep 332
Posts |
I'm really afraid to machine the cylinder sleeves to 84.5 mm as they are very thin and will become thinner. And maybe there is some kind of a coating inside the cylinders that might disappear.
What about the open deck philosophy of the short block? My cylinders were worn on the top of them. Even with forged internals the cylinders walls may crack eventually. Lower compression pistons? 20 psi will sound like 15 psi with lower compression pistons and will need custom reflashing and the fuel supported from the stock injectors might not be sufficient. That's why I'm searching for a used long block
__________________
|
Appreciate
0
|
10-02-2013, 02:55 PM | #80 |
First Lieutenant
65
Rep 385
Posts |
Typically OEM engines are built very well -meaning, tolerances are very closely adhered to. It's hard for a decent shop to match these tolerances, and impossible for a shade tree mechanic. This coupled with the differing thermal expansion properties tends to give "built" motors a reputation for being able to take a beating, but not be good at longevity.
Properly built, upgraded internals should last a very long time provided tuning is reasonable. |
Appreciate
0
|
10-02-2013, 06:31 PM | #81 | ||||
Brigadier General
126
Rep 3,099
Posts |
Quote:
new forged pistons with the latest material composite don't have the massive expansion any more a few years ago you would have been right OEM motors are built around longevity at stock tune, not tuned like N54's here are. Quote:
you could go to 84.25, FWIW. they're thicker than many other open deck blocks, and the cylinder to cylinder walls aren't thin at all haha (not thick, but not THIN) and i don't believe there's been any pressure cracking of N54 cylinders, nothing to be concerned about to date, even with the cars at 700whp+ Quote:
and fuel? the opposite is true, it means you can get more power on pump, you don't NEED the higher octane of high ethanol content. Quote:
|
||||
Appreciate
0
|
10-02-2013, 07:26 PM | #82 |
First Lieutenant
65
Rep 385
Posts |
Flinchy, I agree with your comments about my quote in theory. The problem is that in actuality, everyone thinks they're going to a good shop. There are far fewer good shops than purport to be good shops. I've seen lots of terrible machining done at "excellent" shops the result of which was the new, more durable parts of the engine self destructed within a couple of thousand miles. Usually the end user is bummed out because they spent probably too much money on their build and so it goes...
|
Appreciate
0
|
10-02-2013, 08:03 PM | #83 |
Major
339
Rep 1,185
Posts |
I agree that rebuilding can be a hit or miss. I rebuilt my mustang and never regretted it one bit. If you go the rebuild route you have to make sure you fill out a contract of everything you plan to get done, parts list ect... then you ask them how long it till take, then make them sign the contract with a list of penalties for not completing it on time, if nothing else is wrong with the car that isn't written into the contract. If they fail to deliver by the timeline those penalties will reduce your overall cost. I did this with my mustang and Saved 1.5k because he promised the car a month earlier. Their shop took on to many jobs and got behind. This was on a 4.6 engine. These are not easy and require very precise tools just like the bmw engine does. I spent a total of 6k, but got it stroked with forged internals, ported heads, cams, and a vortech install with a custom intercooler. It was a steel for what i paid. I also had lots of various little parts replaced that we agree'd on and a few extra he called me about. All these thing's were noticed with the tare down so its was just him saying, I noticed your timing chain was rubbing on your tentioners since im removing and reinstalling it all anyways, do you want me to buy new parts. I said yes. That does not affect the time of the build.
If you find a shop that say they can rebuild the bmw make them sign a contract. If they wont they have no intention to respect your timeline and know that once they take the bill and tare it down they can run you along for however long they want. This is what most shops do. Great shops will not do this. Anyways, If it was me i would rebuild over buying a used engine. The only way i would buy a used engine is if i only planned to run the car stock, or with just a tune. Nothing more. You are obviously interested in a lot of HP and I highly suggest paying a little more for a rebuilt engine over a used engine. With full forged internals you will be capable of 800+ hp without worries if you ever decided to try and obtain that amount. Deciding between a used, vs rebuilt engine all comes down to your HP goals. If you can't afford to rebuild with ""Quality parts", then you obviously cant afford mucho HP. Then Stick to Stock. At least with a rebuilt engine your engine will have a higher demand in the resale market with forged internals. With a stock engine, your at KBB and all that extra money you invested in it is tossed out the window. You will also have problems selling it if you cant provide proof of the exact mileage on the engine. If this was New then you would be fine, but when its used. You truly never know the exact mileage unless you were the one to pull the engine. I for one would NEVER buy a car with a "Used" engine. To much of a risk with the amount of fraud that happens. Since the mileage can't truly ever be documented in a way to prove it. If the owner had pics of the car it came out of, with the dash mileage then "Maybe" but I'd still want well below blue book. I for one would buy a car with an upgraded rebuilt engine with documentation and would pay a little above blue book for it, Especially on a BMW. I'm not saying you won't get bluebook for your car, but don't get mad when dealers low ball you and tell you that they can only sell it at auction ect... (without 100% proof of mileage, which uses makes it near impossible to prove) You will also get low balls from private parties. Just make sure that you look at all aspects, reasons for why you want a used ebay engine (or elsewhere) and what your long term HP goals are.
__________________
2015 BMW M4 F83
2009 335i X-Drive | GC 2.0 Turbos (sold) 2009 335i e93 (Sold) 2007 Bmw X5 (Sold) |
Appreciate
0
|
10-03-2013, 01:13 PM | #84 | |
Major General
161
Rep 7,377
Posts |
Quote:
|
|
Appreciate
0
|
10-03-2013, 07:11 PM | #85 |
Lieutenant Colonel
76
Rep 1,883
Posts |
Yes.
Ran meth when on stock turbos and when single turbo. So I've ran it since prob 2008-2009.
__________________
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
Last edited by GeorgiaTech335coupe; 10-03-2013 at 07:19 PM.. |
Appreciate
0
|
10-03-2013, 07:18 PM | #86 | |
Lieutenant Colonel
76
Rep 1,883
Posts |
Quote:
I have a lot of time and $ invested into my engine. I truly miss driving this car (been out of commission since Feb 2). And it better scare the shit out of me when I get it back with as much as I have invested in it.
__________________
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
|
|
Appreciate
0
|
Bookmarks |
|
|