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R56 New AC compressor # has smaller diameter pulley

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R56 New AC compressor # has smaller diameter pulley

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Old 05-28-2019, 05:52 AM
Lex2008
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New AC compressor # has smaller diameter pulley

I installed a new SANDEN AC compressor in my 2008 R56S yesterday I ordered from ECS Tuning. It looked virtually the same. Original was also a Sanden.

After I got it on and put the belt on, I noticed the belt tensioner was almost resting on the alternator pulley. I then measured the pulleys and the new part # 64529223392 (original was 64522758145) is 1/2 an inch smaller. The 64529223392 supersedes the original for who knows what reason. (http://www.realoem.com/bmw/enUS/part...&q=64522758145)

I also installed a new DAYCO belt tensioner at the same time which has a different design for the arm. It is MM away from touching the AC pulley. Anyone notice that?

I wonder if I should get a shorter belt. (belt 11287604014 : 6K x 895) I know that their are 2 AC compressor part #s with different corresponding belts, but I double checked and mine seems to be the correct combo of belt (belt 11287566789 : 6K x 905) and AC compressor. Does anyone know if the belts are interchangeable?


original compressor 64522758145

New compressor installed part # 64529223392



DAYCO tensioner arm almost touching alternator pulley.
 

Last edited by Lex2008; 05-28-2019 at 06:00 AM.
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Old 05-28-2019, 06:28 AM
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Hello, As noted on the redlines it requires 11287604014. Let me know when you get it and fit it so we can make sure everything is ok.

https://www.ecstuning.com/Mini-2007-..._Conditioning/
 
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Old 05-28-2019, 01:14 PM
Lex2008
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Originally Posted by ECSTuning View Post
Hello, As noted on the redlines it requires 11287604014. Let me know when you get it and fit it so we can make sure everything is ok.

https://www.ecstuning.com/Mini-2007-..._Conditioning/
ECS Tuning,

Where does it state that? I ordered after speaking to your staff and they told me to order 64529223392 . They never told me to get a shorter belt to go along with it. The unit is installed. I assume I can get away with the shorter belt 11287604014 (894 vs 905mm)?
 

Last edited by Lex2008; 05-28-2019 at 01:28 PM.
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Old 05-28-2019, 01:27 PM
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Hello Lex,

Can you see the red colored notes?

For belt 11287604014 : 6K x 895
 
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Old 05-28-2019, 01:40 PM
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Originally Posted by ECSTuning View Post
Hello Lex,

Can you see the red colored notes?

For belt 11287604014 : 6K x 895
ECS Tuning.

Yes I see that but your staff gave me that part over the phone number based upon my VIN. They never mentioned ordering a shorter belt. Come on man, this is why I order from ECS Tuning and not a million other places. To avoid these mistakes.

Can I just install the shorter belt 11287604014 ?

a
 
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Old 05-28-2019, 01:59 PM
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Oh, ok sorry they missed that. I will also update the system to make it more clear. Yep, get that shorter belt.
 
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Old 05-28-2019, 02:58 PM
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Originally Posted by ECSTuning View Post
Oh, ok sorry they missed that. I will also update the system to make it more clear. Yep, get that shorter belt.
Mike P is over-nighting me the correct belt. Your system is mostly clear but your staffer made a mistake. We all do it.

Im just glad I can swap belts and not have to pull a compressor!

If anyone needs a new compressor, save $100 and get the newer compressor design 64529223392 and a smaller belt 11287604014 rather than accommodating the new compressor to the original belt.
 

Last edited by Lex2008; 06-01-2019 at 09:38 AM.
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