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Just another n54 engine build thread
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01-06-2013, 09:32 AM | #45 |
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Decided against it for now, might do it later but probably won't build the internals but rather just go big turbo and call it a day. I did pick up the engine yesterday and it seems to be in pretty good shape, 34k miles and no leaks anywhere as far as I can tell. The only thing that I am certain we have to swap over seems to be turbos,oil pan, injectors and possibly my wiring harness which all can be done rather easy with the engines out of the car. I plan on replacing oil pan gasket and possibly valve cover gasket, anything else you guys recommend before putting this one back in? Hopefully I don't run into anything unexpected but will keep this thread updated regardless. Happy sunday guys
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01-06-2013, 10:23 AM | #46 | |
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01-06-2013, 11:46 AM | #47 |
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Compression test on all the cylinders to make sure they're not only holding the proper compression, but also that there is nothing wrong/off with the internals.
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01-06-2013, 03:02 PM | #48 |
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How much you must pay for a engine at salvage yard?
Look here , use google chrome internet browser , translates for you. http://moto.allegro.pl/listing.php/s...pd&string=335i Maybe I can source one out for you and ship it to you. Prices are LOW! Maybe just get a M3 while you are at it... with transmission and all the needed hardware
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01-06-2013, 03:26 PM | #49 | |
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01-06-2013, 03:47 PM | #50 | |
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01-08-2013, 04:07 PM | #51 |
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Well if you actually read my post, you would realize I never stated a single should flow more air than equivalent twins. The natural of twins though is they are generally smaller, but obviously there are 2 of them. They will still run out of air in high RPMs but will spool quicker. A large single will spool slower, but will continue to push more air in higher RPMs due to its larger size. I don't see what is difficult to understand about that. Of course you could put large enough twins and match the potential of a single, by that point the single will cost half as much and perform similarly. This is also assuming you had the extra RPMs to take advantage of. This platform is not revving high enough for it to matter right now.
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01-08-2013, 04:19 PM | #52 | |
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01-08-2013, 04:33 PM | #53 | |
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There's no reason someone can't put a smaller single turbo on the car to get quick spool and nice top end. So far all of the 6MT guys have opted for the 62mm turbo. I have a feeling the 58mm turbo would be a killer on road courses. |
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01-08-2013, 04:46 PM | #54 | ||
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01-08-2013, 09:30 PM | #55 | |
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I am in no way saying the current single is or will be better than the Stage 3 set you are building. I honestly think your twins will be great for this platform. That being said, I have a hypothetical situation I would like to know the answer to if you don't mind helping me better understand this. If the N54 was revving to 8000 RPM, there were no concerns of fueling, and the block would handle it, would the specific twins you are planning on using on your Stage 3 produce as much peak power as a 62mm single in the same car assuming perfect tuning on both? I would guess that twins that spool much quicker than a larger single, would be out of their efficiency range at a high boost/high rpms scenario where as the single would still be doing fine. Is that incorrect? I know you could put larger twins and run the same power to redline so that is not what I am asking. I am asking if twins that spool by 2500 RPMs will run out of air before a larger single that spools at 3200? I am generalizing once more, so if it is possible to answer this question as it is without specifics I would really like to know (not trying to be a dick or anything, I am genuinely curious and would like learn more about turbo configurations) Also I am not in any way trying to turn this into a single vs twins battle, so please don't take it as such. I don't have the money to buy either of them, but I would like to learn more. Last edited by jdbretz; 01-08-2013 at 09:47 PM.. |
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