545 vs 550i (not speed)
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Joined: Nov 2010
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From: North Carolina
My Ride: 535i
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I owned both a 545 and a 550. Both are great engines. As others have said, the change had nothing to do with reliability and everything to do with staying competitive. I will say that for me the 545 made more of its 325 horses than the 550 did with its 360, the 550i really didn't feel any faster than its older brother.
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From: Leesburg, VA
My Ride: 07' BMW 550i
"Valley of Death" coolant fix: http://www.allgermanauto.com/product/index.html
This image of the cooling system for 545 and 550, so if you compare to 540 is absolutely different design, the cooling pipe is sticking out of engine block.
540:
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Joined: Nov 2010
Posts: 525
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From: North Carolina
My Ride: 535i
Not sure what you are saying in regards to the 540? It's a smaller displacement N62.
The upgraded coolant pipe solution I posted is for the 4.4 & 4.8 N62 engines, which are found in the 545 and 550. I don't know if that company even makes one for the 540.
The upgraded coolant pipe solution I posted is for the 4.4 & 4.8 N62 engines, which are found in the 545 and 550. I don't know if that company even makes one for the 540.
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Joined: Sep 2011
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From: Leesburg, VA
My Ride: 07' BMW 550i
After more research I came with this, it can a problem, but it's not is wide as was on previous generation 745 and 540 engines. The BMW tech service told it?s almost gone with E60 models; he can?t remember when he has seen a car with this problem. He works for BMW for 15 years.
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After more research I came with this, it can a problem, but it's not is wide as was on previous generation 745 and 540 engines. The BMW tech service told it?s almost gone with E60 models; he can?t remember when he has seen a car with this problem. He works for BMW for 15 years.
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Joined: Sep 2011
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From: Leesburg, VA
My Ride: 07' BMW 550i
today I talked again with tech adviser and foreman shop, while picking up my car from service, they are both told me it's problem almost (don't remember even they have 550 with this problem) eliminated on 550 engines, they said the problem was on 745i in most cases, they don't know why.
Contributors
Joined: Nov 2010
Posts: 525
Likes: 0
From: North Carolina
My Ride: 535i
today I talked again with tech adviser and foreman shop, while picking up my car from service, they are both told me it's problem almost (don't remember even they have 550 with this problem) eliminated on 550 engines, they said the problem was on 745i in most cases, they don't know why.