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Old 01-07-2013, 11:09 PM   #187361
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Old 01-07-2013, 11:22 PM   #187362
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DISA leak will do that. Does yours have the green o-ring or the orange silicone one?
it has a little of the orange silicone still but its like its formed in with the plastic. not really an o-ring by itself.
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Old 01-07-2013, 11:55 PM   #187363
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Originally Posted by evilstar View Post
it has a little of the orange silicone still but its like its formed in with the plastic. not really an o-ring by itself.
Yeah, that's the latter one.
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Old 01-07-2013, 11:59 PM   #187364
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it has a little of the orange silicone still but its like its formed in with the plastic. not really an o-ring by itself.
this.....

raf had the tiny cover off the external part facing the intake and was blocking the orange ring with his finger and the car idled fine, when he pulled his finger off it started fluttering again......
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Old 01-08-2013, 12:07 AM   #187365
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this.....

raf had the tiny cover off the external part facing the intake and was blocking the orange ring with is finger and the car idled fine, when he pulled his finger off it started fluttering again......
my theory is we could use a large self taping screw to plug the hole in the little plastic piece. its kind of mickey moused but it could work in the mean time.
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Old 01-08-2013, 12:07 AM   #187366
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hell for the price of a new disa you could have a metal flap cncd
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Old 01-08-2013, 12:08 AM   #187367
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LOL what's with all these dying E46s?
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Old 01-08-2013, 12:18 AM   #187368
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hell for the price of a new disa you could have a metal flap cncd
My uncle owns his own cnc equipment, he is a machinist....... in texas
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LOL what's with all these dying E46s?
well, she is 10 yrs old and has almost 170k miles...... but has been good to me, no complaints....
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Old 01-08-2013, 12:24 AM   #187369
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Quote:
Originally Posted by cd330 View Post
this.....

raf had the tiny cover off the external part facing the intake and was blocking the orange ring with his finger and the car idled fine, when he pulled his finger off it started fluttering again......
Got it. I guess if the DISA was intact, you could get a replacement O-ring from ebay. The older DISA had an o-ring that came as a separate part number, but the newer style one like yours has silicone applied at the factory. You can scrape it off and put the ebay ring there. Of course by the time the silicone goes, the DISA is usually falling apart anyway, so you might as well get a new one.
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Old 01-08-2013, 12:25 AM   #187370
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hell for the price of a new disa you could have a metal flap cncd
Yeah, lol. The solenoid that actuates it doesn't always hold up, though.
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Old 01-08-2013, 12:58 AM   #187371
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Got it. I guess if the DISA was intact, you could get a replacement O-ring from ebay. The older DISA had an o-ring that came as a separate part number, but the newer style one like yours has silicone applied at the factory. You can scrape it off and put the ebay ring there. Of course by the time the silicone goes, the DISA is usually falling apart anyway, so you might as well get a new one.
yeah, the disa was broke and the flap was stuck part way open when we got it out. So I just removed the flap to prevent anything else from flying into the manifold and will just get another one in the next week .......
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Old 01-08-2013, 01:03 AM   #187372
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I was thinking what if he just plugged it with something. Not like its working anyways. It would be the same but with out the vacum leak.

Just to confirm I have it correct. The disa opens the flap when in higer rev but closes under less revs. Almost like a throttle body. Is that correct?
And if so an always closed disa would hinder power while an always open disa would cause a rough idle. I assume because of bad AFR mixes. Is this also correct?
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Old 01-08-2013, 01:07 AM   #187373
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Quote:
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yeah, the disa was broke and the flap was stuck part way open when we got it out. So I just removed the flap to prevent anything else from flying into the manifold and will just get another one in the next week .......
Yeah, that's a good enough reason to get a new one, lol.
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i'd rather be gapless with no bulge
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Old 01-08-2013, 01:13 AM   #187374
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Yeah, that's a good enough reason to get a new one, lol.


whelps, sometimes you have to fly by the seat of your pants right?
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Old 01-08-2013, 01:19 AM   #187375
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Quote:
Originally Posted by evilstar View Post
I was thinking what if he just plugged it with something. Not like its working anyways. It would be the same but with out the vacum leak.

Just to confirm I have it correct. The disa opens the flap when in higer rev but closes under less revs. Almost like a throttle body. Is that correct?
And if so an always closed disa would hinder power while an always open disa would cause a rough idle. I assume because of bad AFR mixes. Is this also correct?
Yep, sorta like that.
It's closed at low range (<4krpm or so), which splits the manifold into 2 banks and makes it equivalent to a longer intake runner. That increases torque.
Then the flap opens and allows the manifold to be shared among all cylinders, which provides more air volume.

The motor will run a bit rougher with the DISA open at low RPM because the intake air pulses are not what the DME expects.
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i'd rather be gapless with no bulge
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Old 01-08-2013, 01:19 AM   #187376
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whelps, sometimes you have to fly by the seat of your pants right?
Guess so.
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i'd rather be gapless with no bulge
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Old 01-08-2013, 01:36 AM   #187377
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the family matters thread bump..
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Old 01-08-2013, 02:21 AM   #187378
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the family matters thread bump..
lol, that was actually pretty good.
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Old 01-08-2013, 02:49 AM   #187379
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Que?

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Fill that hole in your soul by buying more material goods
http://forum.e46fanatics.com/showthread.php?p=15286051
buy my sedan rear seats (gray leather)

sell me sedan A pillars!! (black fabric)
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Old 01-08-2013, 04:18 AM   #187380
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Que?

[bimmerapp]
http://forum.e46fanatics.com/showthread.php?t=498822
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