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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Replace N52 2011 Z4 3.0i DISA Valves OEM? URO? Torn seal



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      Yesterday, 04:43 PM   #45
E92William
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I've heard of people letting theirs be if it isn't leaking because sometimes it can supposedly not seat correctly and leak if it was good before. I'd buy all kit and tools needed for the seal job and if it's good then you can return
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      Today, 08:25 AM   #46
Soravia
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I'm going to do coolant pump while at it. I heard it also requires frame drop or engine lift to clear. Pump is not expensive compared to labor.

Engine looks much cleaner with foaming CRC plastic safe cleaner. Basically detergents I think. I even cleaned my Super20 engine bay with just that, a small brush and poured water over.

Waiting for intake runner gaskets and coil pack sleeves to arrive Monday. I'll put the rest back together ahead of that.
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      Today, 01:25 PM   #47
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I might try some of that before I do my belt and such since I've got some grime there.

The pump on xdrive is very much doable without a frame drop, just a lot tighter than with rwd and time consuming.
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      Today, 07:06 PM   #48
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The DME heat sink doesn't clear the engine cover!

I might have to order DME intake specific engine cover. At least cheaper than correct DISA intake.
Is the coil plug supposed to be floating? They are not in there tight, not bolted down like in my Mazda.

The Delphi coils from Autozone looks different. Not sure because they were not made 2010 like the ones with the car.

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      Today, 07:53 PM   #49
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The heat sink has a specific engine cover for that model year engine. You can just trim the cover, no biggie.

The coils should kind of plug into the spark plug and that keeps them in place aswell as kind of that rubber outer hat they have which seals against the spark plug tube. No bolts.
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      Today, 07:58 PM   #50
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Looks like engine cover costs as much as a correct manifold with working? DISA and a throttle body. Ordered one from a "low miles" 2007 X5.

I'm going to have to redo the work on intake all over perhaps I'll do oil filter housing gaskets, too now.

I'll sell this intake I have now on forum for discount.
Now I just need to figure out about flashing the car

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      Today, 08:18 PM   #51
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I wouldn't go as far as to change out the entire manifold just for that cover issue. You can likely get a cover for super cheap out of car-part.com

Here's a picture I found online of a car with that manifold and the cover trimmed
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      Today, 08:27 PM   #52
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It looks ghetto lol. I tried trimming the cover to fit supercharger on my NC Miata and it went to hell. Not going to try that on the BMW. I went as far as to get hold insulation to make it nice and stuff. All my mods are made to look OE or get along with OE parts looks.

I don't have a Dremel either. I should buy one.
Got the X5 intake with DISA and throttle body for $228 shipped. I can sell throttle body off as well!
Ordered OFHG kit, OE screws and aftermarket expensive life time gasket. $36 for BAV Auto gasket but it should be worth it

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