DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Big_Toe_Knee
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Re: DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Big_Toe_Knee » Sat Oct 12, 2013 3:05 pm

What do you think? Buggered?

https://www.dropbox.com/s/dmbssgvy0x5ch ... 1%2057.mov

Hope the link works....
Image
56 Z4 Roadster | 2.5i Sport | Titanium Silver Metallic | Black Leather

Trust
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Trust » Wed Jun 07, 2017 8:20 am

So this is why I get in touch with z4-forum.com.
Trouble with air System.
Already got a new maf and new magnetic valves. Now DISA expeditions...
Thank you for this great instruction. I will check mine this evening.

Trust
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Trust » Thu Aug 24, 2017 9:48 am

Checked it 2 month ago. DISA 1 and 2 are working fine.
Feels good to get this to know.
While I was looking for DISA, i noticed some bad gaskets between the air intake and the engine.
Replaced it, now he's still running good angain! :)

I just wanted to thank you again for this great instruction!!

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Bing
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Bing » Thu Aug 24, 2017 9:53 am

Delighted to hear it helped :thumbsup:
Current... Silver Grey ///M Roadster, non-flimper spec, Imola Red nappa, permanent ear-to-ear grin 8)

Previous... 3.0Si Sport Roadster, Black Sapphire, Dream Red leather with lots of toys and lots of mods...

Thunderous One
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Thunderous One » Fri Oct 19, 2018 5:31 pm

Hi
Just recently purchased my 1st Z4 after owning E36 M3’s.
Gotta admit, I was hesitant, but, now confident.
It’s a great car and the forum is filled with great advice and guides.
Always appreciate the effort forum members make for other forum members and newbies like myself.
Found your detailed DISA inspection/replacement guide both informative and resssuring.
Thankyou for your effort, it’s appreciated
BMW E36 Compact “Dakar Yellow” (sold to make way for Z4 Coupe)
BMW E36 M3 Evo Vert (sold due to hit & run)
BMW E36 M3 Evo Vert (stolen written off)
BMW E36 M3 Evo Saloon (sold to buy Vert)
BMW E36 318is Coupe (sold to buy M3)

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Bing
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Bing » Fri Oct 19, 2018 9:36 pm

You’re very welcome :thumbsup:
Current... Silver Grey ///M Roadster, non-flimper spec, Imola Red nappa, permanent ear-to-ear grin 8)

Previous... 3.0Si Sport Roadster, Black Sapphire, Dream Red leather with lots of toys and lots of mods...

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montymog
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by montymog » Thu Nov 01, 2018 9:37 pm

just came across this brilliant write up and having the same engine as yourself reassuring to know bmw upgraded the disa and used a plastic not metal pin as on the 54 have saved your post just in case :) :!:
e85 3.0si monaco metallic extended oregon cream leather.m seats all electric with heating and extensions.m multifunction s/wheel reverse sensors.light maple wood trim m suspension ect.ect. running on eagle f1 assy 3s

Hugo
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Hugo » Wed Jan 23, 2019 4:44 pm

Bing, you are the Man!! Very usefull!! Just checked my DISA and its loose.... Thanks 😉

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Bing
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Bing » Tue Mar 19, 2019 9:40 pm

So, update as this thread is now 7 years old, and it would appear it’s well worth checking your DISA on an N52, both because of the post above, and this thread here :

viewtopic.php?f=3&t=113175&p=1632354#p1632354

It would appear there is a possibility of the rubber on the updated DISAs perishing, so if you get here and think ‘nah, I reckon it will be fine after reading this’ , then I’d suggest you have a look anyway :!:
Current... Silver Grey ///M Roadster, non-flimper spec, Imola Red nappa, permanent ear-to-ear grin 8)

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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by Haggisman » Tue Mar 19, 2019 10:01 pm

Thunderous One, Like yourself I was a big fan of the E36 M3 having raced one for a number of years. Having to stop racing I wanted to get some fun from a road car. I wasn’t sure if the Z4 would deliver but it does. I have been round the track in it as well and was amazed how it performed (handling).
I have a roadster which I love but imagine the coupe would be even better for the track.
Have fun.
2003 Toledo Blue 3.0 E85 Manual - Current
2008 Volvo V50 - Dog Car
2017 Mazda SP25 Ltd - Her Indoor’s Car
1995 Dakar Yellow M3 E36 Race Car - Sold
2009 Vauxhall Astra VXR - Sold
2003 350Z well modded - Sold
1992 911 RS - Sold and still in mourning

noiseboy72
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DISA Removal and Maintenance - N52 Engine (Pic Heavy)

Post by noiseboy72 » Thu May 16, 2019 8:14 pm

So I think this might be the issue I have.

2.5si N52 that makes a strange rushing, rattling noise at about 4000 revs when cold. It sounds like it's coming from the intake side of the engine and I am not convinced it's not down on power at low revs.

I think I will give it a strip down and see if the valve looks in good condition. Has anyone tried one of the rebuild kits? Seems a lot cheaper than replacing the unit, but it's a risk splitting the sealed unit of course.
E85 2.5si Sport in dark blue. Calibre CC S wheels

What could possibly go wrong!

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