Jump to content
mintimperial

DISA valve refurb M54 3.0

Recommended Posts

Hi all,

So since December I have had a loud rattle from the manifold and poor low end torque and it was the dreaded DISA valve!

I looked at new ones and at £234 from the stealers (£361 fitted!!!!!) thought id do a little research.

Ended up buying a refurb kit from i6 Automotive which replaces the wearing plastic parts with upgraded aluminium components, also changing the pin on the end, which can drop in and cause serious damage, for a much better design!

The kit was £54.99 delivered.

7e8e7ygu.jpg

pymenade.jpg

Pretty simple install if you have the correct tools.

2 x t40 torx bolts to remove the disa from the manifold

dy9etedu.jpg

Unit out and pretty filthy!

gape7a9e.jpg

Instantly noticeable is a lot of play in the valve caused by a majorly worn plastic bell housing.

http://youtu.be/Yh-ewGUqoDc

Took the back cover off and inserted a threaded bolt into the rear of the housing to get some purchase and pull it out.

edyseqyg.jpg

Came out easily, though it really shouldn't!

5ahyhaqe.jpg

Next job was the pin on the other end. Inserted a small flathead screwdriver and twisted to prise it up enough to grab it with some pliers.

ta3arare.jpg

rymaqyvy.jpg

This pin can cause catastrophic damage if sucked in or dropped into the combustion chamber! Glad to see the back of it.

epu4yde4.jpg

Job was then to remove the flap, a little wriggling it out is needed!

e7ema4eh.jpg

Next job was to clean the whole assembly before rebuild time. Used a Dremel type tool with the soft brush and some servisol foaming solvent.

ruvepare.jpg

Greased up the interior where the new aluminium bell housing goes with the supplied blue grease. And also the new bell housing itself.

u4a5era5.jpg

New flap goes in, and new pin, which is a much longer pin and enters from the back side of the bell housing meaning there is no way it can fall in! Tightens with an Allen key.

(Sorry forgot a pic of the new pin, but can be seen in the pics of the kit.)

u3uda5yv.jpg

Vacuum coupling reattached to new bell housing, and kept on by retainer clip that is included.

ba6upuja.jpg

After this it was almost complete, but the orange seal around where the unit meets the manifold must be scraped out and replaced.

I used the same small flathead screwdriver to scrape the rubber out and then got the rest with the wire brush Dremel attachment.

New O ring goes in after being blue greased and jobs all done,

You end up with a disa valve which is better than a new one from the dealer! Really not hard at all!

ere2utap.jpg

No play at all!

http://youtu.be/oyNyvgu1Sqs

Installed back in the car with the 2 torx bolts, and pushing it in needed much more force due to the new O ring. A snug fit.

Instantly the rattle is gone and the low end torque is better than since I've owned the car. A well worthy repair and glad I didn't buy a new DISA valve!

Very happy with the result- hope this helps someone out!

Share this post


Link to post
Share on other sites

I've got a funny feeling mines doing the same, that's made it look mega easy!

How long would you say that took?

Share this post


Link to post
Share on other sites

Great write-up, made it look real easy.

Does anyone know if the 328 uses the same part?

Share this post


Link to post
Share on other sites

Great write-up, made it look real easy.

Does anyone know if the 328 uses the same part?

It's worth checking with realOEM.com for the part numbers but I would suggest it is the same part.

IIRC no because 328 is M52 and 330 is M54

My 323 is/was an M52 engine and apart from the throttle it is essentially the same engine. The disa valves look identical.

Share this post


Link to post
Share on other sites

Am i right in thinking this kit would work on my 325 what with it being an M54 engine that i have. Their website states only for the 3.0 M54 ??

Think my rattle might well be the Disa valve and this guide makes it look so easy to sort out :)

Share this post


Link to post
Share on other sites

Am i right in thinking this kit would work on my 325 what with it being an M54 engine that i have. Their website states only for the 3.0 M54 ??

Think my rattle might well be the Disa valve and this guide makes it look so easy to sort out :)

I would ring them as it is a slightly different part number between 325 and 330

Share this post


Link to post
Share on other sites

Great write-up, made it look real easy.

Does anyone know if the 328 uses the same part?

It's worth checking with realOEM.com for the part numbers but I would suggest it is the same part.

IIRC no because 328 is M52 and 330 is M54

My 323 is/was an M52 engine and apart from the throttle it is essentially the same engine. The disa valves look identical.

Thanks for the info.

I just checked RealOEM and I don't think they are the same part. Look the same but has different part numbers :(

Share this post


Link to post
Share on other sites

Great write-up, made it look real easy.

Does anyone know if the 328 uses the same part?

It's worth checking with realOEM.com for the part numbers but I would suggest it is the same part.

IIRC no because 328 is M52 and 330 is M54

My 323 is/was an M52 engine and apart from the throttle it is essentially the same engine. The disa valves look identical.

Thanks for the info.

I just checked RealOEM and I don't think they are the same part. Look the same but has different part numbers :(

Hmmmm I just checked and my 323 and 325 have different part numbers too, which would suggest there is a slight difference somewhere.

I hate it when Ricky is right :)

Share this post


Link to post
Share on other sites

Well this leads me to my last question..... Is it blindingly obvious when the part needs changing?

My engine is a little tappy but nothing I haven't heard with other cars I've owned. (1st 6 pot BMW mind) I was thinking about changing it to be on the safe side, after spotting this great guide and seeing how easy it looked. But if they don't do the same up-grade kit for a 328......

Sorry for asking this on your thread mintimperial, by the way.

Edited by Ruesta

Share this post


Link to post
Share on other sites

Just ordered one, hopefully do it this weekend

Good write up btw

Edited by Mark_F

Share this post


Link to post
Share on other sites

Done this on Sunday and wow what a difference! The car launches in the lower revs!

Definitely recommend this mod/repair

Share this post


Link to post
Share on other sites

I'm doing mine tomorrow!!

Share this post


Link to post
Share on other sites

Can you remove the current one and check and replace if all ok, or doors removing it mean you need to replace parts?

Share this post


Link to post
Share on other sites

You can remove but why not replace when removed ? Its a cheap fix to potentially save the engine

You could say that about anything.

when You've got a mortgage and wedding to pay for £50 on something that doesn't need to be done is a lot of money wasted.

Share this post


Link to post
Share on other sites

I have both and recently bought a kit

A knackered engine a week before the wedding with lots to get still is a bigger headache than £50

Share this post


Link to post
Share on other sites

You can remove but why not replace when removed ? Its a cheap fix to potentially save the engine

You could say that about anything.

when You've got a mortgage and wedding to pay for £50 on something that doesn't need to be done is a lot of money wasted.

It's well worth replacing even if it 'looks' ok. Trust me on that!

Share this post


Link to post
Share on other sites

tbh if its not rattling and isn't loose then the chances of it flying off into the engine are slim. I was gonna rebuild mine, but after inspection its still in very good working order. So i ordered a new seal for the DISA from i6 automotive, and it has made a big difference in performance, probably due to the fact its now sealed tightly and I will just inspect it yearly for any signs of play/damage.

Share this post


Link to post
Share on other sites

Ive replaced the O ring on the Disa Valve but i still get that noise which is a vacuum leak , What can it be a new disa valve or replace all the other seals on the valve ?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...