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  #1  
Old 06-21-2024, 12:45 PM
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Join Date: Mar 2016
Location: Saskatchewan Canada
Posts: 2,214
80stech is on a distinguished road
M54 DISA fix

I might have posted this before but when I bought the X5 it had about 192K and the DISA was rattling apart, I think the pin had even come out. I ordered a repair kit but did a repair in the meantime by putting a brass sleeve/bushing on the stub shaft end and siliconing the hex drive part. I never did install the kit and just now had it apart and after many years (now 463K km) it is still %110!

It might have been a piece of heat shrink instead of the brass sleeve, I should have put my glasses on and had a better look, but either way better than new or kit!
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1988 325is (purchased new) sold
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  #2  
Old 06-23-2024, 10:13 AM
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Join Date: Jun 2021
Location: Austin, TX
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X5chemist is on a distinguished road
Wow, you must not rev it above 3000 RPMs. Does the DISA valve open above 3000 RPMs?
Mine is showing signs of oil fume seep. It did have a preventative maintenance kit installed on it a while back. It may be time to go new.
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Old 06-23-2024, 10:42 AM
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Join Date: Mar 2016
Location: Saskatchewan Canada
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80stech is on a distinguished road
I think the main problem originally is that it wears out/falls apart from rattling not so much wear from operating. Reducing the clearance on the stub end (not sure how much because I never compared it to a new one) AND I think even more important by having no clearance on the drive end but still some flex with the silicon makes a huge improvement.
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2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)
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