DISA Removal and Maintenance - N52 Engine (Pic Heavy)
- Thread starter Bing
- Start date
:!:
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 :
https://z4-forum.com/forum/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 :!:
https://z4-forum.com/forum/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 :!:
[ref]Thunderous One[/ref], 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.
I have a roadster which I love but imagine the coupe would be even better for the track.
Have fun.
noiseboy72
New member
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.
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.
Hi Bing,
I would just like to add my thanks for your very informative and thorough guide for accessing the DISA valve. I haven't much to add really except I did manage to get the connecting manifold between the throttle body (?) and the sound box off without too much difficulty. The DISA valve itself wasn't in bad shape and I enen had a can of Wynne's carb cleaner as it happened to clean it up.
![ATTACH]](/proxy.php?image=http%3A%2F%2F%5BATTACH+type%3D%22full%22+alt%3D%22IMG_20210720_134944.jpg%22%5D109751._xfImport%5B%2FATTACH%5D&hash=4a899efea35cd09e4d245b039d7472d2)
Also took the opportunity to give the air filter a clean:
View attachment 1
Thanks again for your help,
Robert.
I would just like to add my thanks for your very informative and thorough guide for accessing the DISA valve. I haven't much to add really except I did manage to get the connecting manifold between the throttle body (?) and the sound box off without too much difficulty. The DISA valve itself wasn't in bad shape and I enen had a can of Wynne's carb cleaner as it happened to clean it up.
Also took the opportunity to give the air filter a clean:
Thanks again for your help,
Robert.
