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#1
05-30-2023, 07:34 AM
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Spare engines.
My niece in Az has an '04 Z4 with only 80k miles on it.
 I had a good look over it. I'm surprised it's not plagued with oil leaks. If it's in an accident, I told her I want the engine. The 04-06 M54 should be compatible, right?  My other niece has a nice 645Ci. It's in near perfect condition. It had a non working power lighter. The problem was a blown fuse. My niece now knows how to replace a blown fuse. It's located in the trunk. 
__________________
'06 X5 3.0i - bought @143,123 miles (12/26/20) 
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#2
05-30-2023, 08:28 AM
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Quote:
I like to have a couple of M54's on hand in case I come across an E46, E53, E83, E39, E36/7 that blew a head gasket or has some other engine failure. I would often pick up used engines,...usually overheated, and rebuild them. I really only want the 3.0 liter M54B30... I found myself a few years ago with five M54's ready to go, so I sold several, including one I shipped across the country. Now I have one B30 and one B25.. But the truth is, that if you can keep oil and coolant in your M54, it will likely last longer than the rest of the car. Last edited by Effduration; 05-30-2023 at 11:59 AM.
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#3
06-21-2023, 11:09 AM
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Can you swap a M54 automatic engine into a manual transmission car….just by changing the flywheel? Or is there more to it?
B][/B] Quote:
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#4
06-21-2023, 11:31 AM
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Sure you can use a manual engine in an auto car and vice-versa...
To use a manual engine in an auto, you need to swap the flywheel AND remove the pilot bearing from the manual engine... To use an auto engine in a manual car you need to swap the flywheel AND install a pilot bearing in the rear of the crank...easy peasy.. I just bought two M54 B30's with problems for $100 total.....one was hydro-locked driving thru a car wash (likely has bent connecting rods) and the other was a race engine that lost its oil pump sprocket... Hoping I can salvage at least one of them...I have spare M54 blocks, heads, cams, etc.
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#5
06-30-2023, 06:33 PM
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How much would a block cost that still has hood cylinder head threads in them…or should I just time wert anyways?
Would also like to upgrade piston rings? Are these blocks okay to overbite and or hone? I thought they may have a special cylinder hardness process… QUOTE=Effduration;1230795]Sure you can use a manual engine in an auto car and vice-versa... To use a manual engine in an auto, you need to swap the flywheel AND remove the pilot bearing from the manual engine... To use an auto engine in a manual car you need to swap the flywheel AND install a pilot bearing in the rear of the crank...easy peasy.. I just bought two M54 B30's with problems for $100 total.....one was hydro-locked driving thru a car wash (likely has bent connecting rods) and the other was a race engine that lost its oil pump sprocket... Hoping I can salvage at least one of them...I have spare M54 blocks, heads, cams, etc.[/QUOTE]
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#6
06-30-2023, 09:42 PM
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Quote:
If you want a bare block, I can sell you one. I can even time-sert it for you. I always time-sert the block when I pull a cylinder head for any reason. I view the aluminum threads as one-time use. I also have the time-sert tools. I re-ring the M54 pistons all the time. I use the standard Mahle rings that have been upgraded with bigger oil drain slits for better drainage and less carbon build-up. As for honing, I don't hone the cylinders unless there are grooves in the cylinder walls that I can feel with my finger nail. Most of the time, I still see factory cross-hatch in the cylinders and leave them alone.
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#7
05-30-2023, 11:20 AM
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I cant say that an M54 is an engine that I feel motivated to keep a huge amount of spares for (absent a SpecE46 build that's probably never happening).
I do have a spare S54 in the basement, though.
__________________
2011 M3 2006 Sierra 2500HD 4WD LBZ/Allison 2004 X5 3.0i 6MT 1995 M3 S50B32 1990 325is 1989 M3 S54B32 Hers: 1989 325iX 1996 911 Turbo 
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#9
05-31-2023, 07:09 AM
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getty150, super nice collection! Are they all daily drivers?
The S54 sounds interesting. I had too google it to find information. Effduration, you are correct. After two years of maintenance, the X5 is happy daily driving above 2000 RPMs. It likes highway speed. Long and short bursts of 70-90 MPH are nothing. I bet it could turn 2500-3200 RPMs all day. An oil pan gasket fix removed a lot of oil sludge build up. A proper thermostat runs at ~193 F. To help with cooling, I keep a stock mechanical fan running. I can hear it engage during warm up. Now if I could fix the oil burning issue, I would be super happy. It's not bad. I can see a small cloud when taking off from a dead stop.
__________________
'06 X5 3.0i - bought @143,123 miles (12/26/20)
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#10
05-31-2023, 09:46 AM
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Quote:
__________________
2011 M3 2006 Sierra 2500HD 4WD LBZ/Allison 2004 X5 3.0i 6MT 1995 M3 S50B32 1990 325is 1989 M3 S54B32 Hers: 1989 325iX 1996 911 Turbo
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