WK CRD: Swirl Motor Question for the experts - JeepForum.com

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post #1 of 20 Old 02-27-2010, 10:05 PM Thread Starter
Drewd
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WK CRD: Swirl Motor Question for the experts

Hi,
Can somebody explain the actual mechanism of how oil leaking form the turbo charger/intake area actually damages the swirl motor? Is the damage caused by oil electrically shorting it or some other mechanism?

Here is why I'm asking. I finally replaced the intake assembly with the upgraded one. I've had a nasty oil smell for a while and I can see visible smoke coming from the area when engine is hot. Is there anyway I can get rid of the oil mess without destroying the swirl motor?

I'd like to pressure wash the area after I soak it with some engine degreaser.

Thanks for your help.
Drew

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post #2 of 20 Old 02-27-2010, 11:47 PM
maxst2
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You talking that the oil lubrication on the turbo is leaking into the compressor?
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post #3 of 20 Old 02-28-2010, 04:45 AM
merlinTec
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Hi
It's the oil getting into the motor that does the damage so washing it I would be careful was around it should be fine as it's only the EGR and oil coolers around it and the V of the engine as drain holes.
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post #4 of 20 Old 02-28-2010, 02:55 PM Thread Starter
Drewd
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Quote:
Originally Posted by maxst2 View Post
You talking that the oil lubrication on the turbo is leaking into the compressor?
No, blowby gasses from the crank case ventilation system are laden with oil. A provent/racor CCV filter is mandatory equipment to filter them out. Prior to doing this, oil in the intake from blowby gasses would leak out the intake where the intake is mounted to the turbo (poor seal design) and remainder would damage swirl motor post turbo intake assembly.
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post #5 of 20 Old 02-28-2010, 07:30 PM
LJS8510
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Turbo intake tube seal info

http://www.crdsite.com/articles/wkintake/tsoilfix.html


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post #6 of 20 Old 03-01-2010, 10:53 PM Thread Starter
Drewd
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Quote:
Originally Posted by LJS8510 View Post
That site appears to be inaccurate. Oil leaking from the turbo intake tube seal doesn't destroy the swirl motor. In fact, oil leaking from the seal may prevent the swirl motor from being damaged if you can stand the stench.

Based on merlin's post, its the oil in the intake from ccv blowby gasses that damage the swirl motor.
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post #7 of 20 Old 03-02-2010, 04:10 AM
LJS8510
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Quote:
Originally Posted by Drewd View Post
That site appears to be inaccurate. Oil leaking from the turbo intake tube seal doesn't destroy the swirl motor. In fact, oil leaking from the seal may prevent the swirl motor from being damaged if you can stand the stench.

Based on merlin's post, its the oil in the intake from ccv blowby gasses that damage the swirl motor.
An informative thread by merlentec.

http://www.jeepforum.com/forum/f67/c...l-leak-863459/


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post #8 of 20 Old 03-02-2010, 05:37 AM
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I think I understand the Swirl Motor issue now. Is this correct? It's actually the leak at the mouth of the inlet to the turbo that is the root of the problem. It is the accumulation and POOLING of the leaked oil sitting on the OUTSIDE of the top of the engine between the cylinder banks that's the REAL issue. Does it then find it's way to the Swirl Motor as it runs around the outside of the engine? The oil vapor passing thru the CCV, thru the turbo and into the intake and intercooler (although not good either), is NOT the actual cause of the Swirl Motor failure. As long as I keep oil from leaking onto the top of the engine, I should be able to avoid this failure. And this is a design flaw inherent to the WK and other Chrysler applications and less of an issue on the Benzes with this same engine. Is there a picture of the swirl motor? I assume it's certainly not visible from the outside. Thanks for any dumbed-down explanations you can give. A bit of a novice wrench turner here.

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Last edited by CRD Dawg; 03-02-2010 at 05:48 AM.
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post #9 of 20 Old 03-02-2010, 08:24 AM
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Quote:
Originally Posted by CRD Dawg View Post
Is there a picture of the swirl motor? I assume it's certainly not visible from the outside. Thanks for any dumbed-down explanations you can give. A bit of a novice wrench turner here.
http://www.jeepforum.com/forum/f67/w...9/#post5240765

I believe the swirl motor is in photo #3 of merlin's post.

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post #10 of 20 Old 03-02-2010, 03:57 PM
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The oil leaking onto the motor from the intake pipe is the primary reason for it to fail however oil going into the intake can clog up the flaps as you can see in my pictures.

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post #11 of 20 Old 03-04-2010, 06:43 AM
CRD Dawg
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SQ & MerlinTec,

Thanks for the help. 2 more novice questions. What is the purpose of the Swirl motor exactly and what are those 6 flaps?

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post #12 of 20 Old 03-04-2010, 08:33 AM
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RACOR or PROVENT FTMFW!!!!!!!!!

i got mine...do you?!

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post #13 of 20 Old 03-04-2010, 09:55 AM
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Quote:
Originally Posted by justa4banger View Post
RACOR or PROVENT FTMFW!!!!!!!!!

i got mine...do you?!
I got mine and the new tube/seal.

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post #14 of 20 Old 03-04-2010, 05:09 PM
fishinbama
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merlin can tell you better but the swirl motor aids efficient combustion. The flaps are part of it.
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post #15 of 20 Old 03-05-2010, 01:22 PM
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Each cylinder incorporates one swirl port and one charge port. The swirl ports can be closed by the swirl flaps (seen in my pics) In the lower engine speed and load range, the swirl flaps are closed by the swirl valve actuator. The entire air mass flows through the charge ports only, which results in greater swirling (hence the name). The increased swirling produces uniform combustion for better engine performance and reduction of particulates. As rotational speed and load increases, the swirl valves open, so that optimal swirling and the required air mass are provided for the current operating conditions.

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