Conversions & Swaps LSX Engines in Non-LSX Vehicles
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LQ4/T56 into 2001 BMW 540i

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Old 06-09-2015, 09:26 PM
  #441  
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cleaning up heads by hand is completely different from having a shop go through them. You could spend days cleaning and polishing a set of heads only to have a shop pull a vacuum on the ports and find that all of your valve seats leak. If you're confident that they're low mileage clean units then go nuts, but if you're unsure, the only way to tell if they're good is to have a pro look at them. The last thing you want to happen is to bolt them up and have running issues because of random leakdown.
Old 06-10-2015, 12:30 PM
  #442  
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hmmm that is a good point, i may just clean them up myself, then bring them to the shop to have them checked and springs installed when i bring the block. just trying to save money where i can. anyways sorry for the hijack, cant wait to see it back together and driving again!
Old 06-16-2015, 08:33 AM
  #443  
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Top End Assembly

I flipped her over on the stand and went to town.

Brand new OEM LS7 lifters got an oil bath for 2 weeks prior to assembly.

_DSC3885 by Norbert Ogiba, on Flickr

Pre-assemble into lifter trays, which were scrubbed clean and blown out with compressed air prior to use

_DSC3887 by Norbert Ogiba, on Flickr

Cylinder head dowels installed, headgaskets laid in place. I chose an OEM MLS LS3 6.2 headgasket to match the .030" overbore.

_DSC3889 by Norbert Ogiba, on Flickr

_DSC3890 by Norbert Ogiba, on Flickr

_DSC3891 by Norbert Ogiba, on Flickr

_DSC3892 by Norbert Ogiba, on Flickr

Ready for a fresh head (love this shot)

_DSC3893 by Norbert Ogiba, on Flickr

Get her down into place, making sure not to snag the surface with the corner of a dowel.
_DSC3894 by Norbert Ogiba, on Flickr

ARP head bolts (varying length design) were torqued in sequence and in 3 stages to the appropriate spec using the required thread lube on the threads, washers, and under the head of the bolts.
_DSC3895 by Norbert Ogiba, on Flickr

Once both heads were on, they got new plugs:
_DSC3896 by Norbert Ogiba, on Flickr

Since I was in a time crunch to get the car done, the rest went together fairly quickly, so I will let the pictures tell the story.
Old 06-16-2015, 08:59 AM
  #444  
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Engine/Trans Assembly and Installation into car

Bolted on a bunch of crap like the front accessories, starter, manifolds, coolant sensors, etc. Cleaned the pressure plate and flywheel with isopropyl alcohol to remove any fingerprints or grease, installed both with ARP hardware, torqued to spec. Joining these two bastards was super fun on my own!

_DSC3923 by Norbert Ogiba, on Flickr

_DSC3924 by Norbert Ogiba, on Flickr

_DSC3925 by Norbert Ogiba, on Flickr

_DSC3926 by Norbert Ogiba, on Flickr

and, in ya go
_DSC3927 by Norbert Ogiba, on Flickr

Workspace = filthy
_DSC3928 by Norbert Ogiba, on Flickr

Finally got it in (without removing the driveshaft no less)
_DSC3928 by Norbert Ogiba, on Flickr

Technician117 doing what he does best
_DSC3929 by Norbert Ogiba, on Flickr

_DSC3930 by Norbert Ogiba, on Flickr

_DSC3931 by Norbert Ogiba, on Flickr

Reconnecting vacuum lines and wiring
_DSC3932 by Norbert Ogiba, on Flickr

Final reassembly
_DSC3933 by Norbert Ogiba, on Flickr

Interior back together
_DSC3937 by Norbert Ogiba, on Flickr

Done!
_DSC3934 by Norbert Ogiba, on Flickr

Fired it up and let it idle while checking oil pressure, coolant temps, and general leaks. Some minor things but no deal breakers. The biggest "oh crap" moments were a minor miss due to a loose plug wire, and a leak from the OPSU (replaced with an appropriate plug). As I walked out to hop in and take it for the maiden voyage, it started puking coolant out of the overflow bottle, where a nipple had cracked and broken on a nearly new tank
_DSC3935 by Norbert Ogiba, on Flickr

_DSC3936 by Norbert Ogiba, on Flickr

Naturally only one store had one in stock locally and they had closed for the day, so it pushed back my schedule by another day. However, I tossed a new one in, and took the car to be tuned.

Mileage at the time of engine rebuild for future reference.
_DSC3939 by Norbert Ogiba, on Flickr

Met my goal and made it out to Columbus, OH for Timmayfest - got it strapped down on the dyno (very high heat and humidity).

_DSC3970 by Norbert Ogiba, on Flickr

Fairly disappointed at the numbers - 360whp and 349 lbft. The only change was a more restrictive exhaust in the form of cats, a resonator, and slightly smaller diameter piping. Last year I made 427whp/400lbft on a local dyno. Go figure.
_DSC3971 by Norbert Ogiba, on Flickr

Had to make a stop on the way home:

_DSC4064 by Norbert Ogiba, on Flickr
Old 06-16-2015, 11:52 AM
  #445  
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That's a pretty big swing in HP--hopefully just the difference in dyno. How's the SOTP meter? Can you tell the difference?
Old 06-16-2015, 12:04 PM
  #446  
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honestly it feels just like it did before the swap - maybe a bit peppier. I don't really recall since the last time I drove it in anger before the motor swap, was last October.

The real test will be to get it on my local tuner's dyno and do some pulls there, that'll be the best apples to apples comparison.
Old 06-16-2015, 10:14 PM
  #447  
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Congrats on getting it all back together!

Originally Posted by LQ4-E39
Workspace = filthy
_DSC3928 by Norbert Ogiba, on Flickr
Your garage cleanliness is a helluva lot better than mine if that's your idea of "filthy"! I'd be thrilled if my work space looked 1/2 that orderly!
Old 06-17-2015, 06:25 AM
  #448  
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My problem is the half started projects everywhere...I get sidetracked and leave crap everywhere ("where did I just put that beer?")

I banged out a quick exhaust job last night on my father's Lexus, so today I'll spend some time cleaning up the garage. Maybe I'll snap some pics.
Old 06-17-2015, 06:47 AM
  #449  
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Nice work getting it all back together, I wouldn't read too much into those dyno numbers without a point of comparison on that dyno.
Old 06-17-2015, 06:51 AM
  #450  
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^ exactly - we had a bone stock M5 that dyno'd there last year, and made 20whp more in identical trim - no changes. It had to be 90F in that shop, with humidity to match.

The best comparison will be running it on my local dyno, where I made 427/400 last year.
Old 06-17-2015, 07:03 AM
  #451  
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Nice job on the rebuild, and the fancy garage.
-V
Old 06-18-2015, 02:47 PM
  #452  
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Nice updates - garage is still looking great - even if you think its messy, lol.
Old 06-18-2015, 05:01 PM
  #453  
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I just read this thread, great swap in the best looking 5 Series.
Old 06-20-2015, 07:28 AM
  #454  
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Were both dynos Dynojets?

Even if it's "yes", still could be enough swing to account for it. More likely, a chunk of that is from your exhaust restrictions, especially the smaller diameter tubing. If you tune for it, it's hard to go too big on LS motor exhaust.

I know you know how inaccurate butt dynos are. Would be VERY easy to be biased based on the beautiful and meticulous work you do. Really nice job! In for the apples to apples dyno! (Re-do that exhaust!)
Old 06-20-2015, 08:24 AM
  #455  
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i think a lot of it has to do with the head swap too. I couldn't use the 317s I had on before since one of them was destroyed by the valve, so I picked up a set of used 241s which don't flow nearly as well. I am on the hunt for some 799s which I may try some light porting on.
Old 07-11-2015, 06:29 PM
  #456  
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I'm doing a ls1 swap into my 2001 bmw 540i and I was wondering what kind of transmission would I have to run with it because my cousin told me I could get an adapter to mount the bmw trans up to the ls1. Need all the help I can get. Thanks
Old 07-13-2015, 07:01 AM
  #457  
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Don't bother with an adapter. Not worth the trouble, nothing off the shelf that I know of. Bolt up a GM trans and be done with it
Old 07-13-2015, 07:07 AM
  #458  
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probably going to put this up for sale shortly, in case anyone is interested. details to follow.
Old 07-13-2015, 10:26 AM
  #459  
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Whish I had the spare cash. Nice swap !!!
Old 07-13-2015, 11:46 AM
  #460  
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Has this one run its course for you, or other life factors compelling the situation?


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