CRD swirl motor resistor ???? - Page 8 - JeepForum.com

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post #106 of 390 Old 09-18-2012, 09:14 AM
terrasmak
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Originally Posted by Taquache View Post
This displaces oxygen thus reducing the effiency of the burn. It allows the motor to run better if you're not injecting oil vapor
Is this the same for a diesel vs gas engine


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post #107 of 390 Old 09-18-2012, 09:22 AM
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Same, except most gasoline motors are naturally aspirated so in a diesel you're clogging a turbo and intercooler with gunk.

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post #108 of 390 Old 09-18-2012, 09:41 AM
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Same, except most gasoline motors are naturally aspirated so in a diesel you're clogging a turbo and intercooler with gunk.
As you can see i cut out the part about the oil thru the intake track. More about the octane part, considering the difference between diesel and gas.

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post #109 of 390 Old 09-18-2012, 10:16 AM
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Right, it's still putting oil vapor back into the cylinder instead of air, thus decreasing the effiency of the gasoline burn.

All of this is an emissions control which while reducing emissions also reduces MPG causing more fuel to be burnt creating more emissions per tank... I don't know if it reduces the emissions enough to compensate for having to burn more fuel.

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post #110 of 390 Old 09-18-2012, 12:32 PM
terrasmak
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Right, it's still putting oil vapor back into the cylinder instead of air, thus decreasing the effiency of the gasoline burn.

All of this is an emissions control which while reducing emissions also reduces MPG causing more fuel to be burnt creating more emissions per tank... I don't know if it reduces the emissions enough to compensate for having to burn more fuel.
You do know there is a big difference between gas and diesel right, hell a diesel has nothing to do with octane and can even run off thinned out oil.

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post #111 of 390 Old 09-18-2012, 12:42 PM
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The tiny amount of CCV vapors going into the engine vs actual air is so small that I don't think it's worth even worrying about. This engine uses about 8-10 lb/min of air during normal 60 mph cruise that the amount of oil vapor sucked in is less than 0.5%. I don't think you could even measure the effiency gain on removing CCV vapor. Environmental conditions would have ten times more of an impact. The worst thing with CCV vapor is it mixing with the egr and gumming up.

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post #112 of 390 Old 09-18-2012, 12:44 PM
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LOL

Yes I know the differences. The burn factor is centane, diesel is also compression ignition rather than spark. None of this matters as we are talking about air when sending oil vapor back into the motor (gasious state not liquid)

You're asking about venting your crank back into the intake I said venting to the atmosphere is better on the motor because you're allowing 100% air through the intake instead of a reduced air volume due to the vapor displacing the air via a CCV in the intake.


Simple physics...

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post #113 of 390 Old 09-18-2012, 12:49 PM
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The tiny amount of CCV vapors going into the engine vs actual air is so small that I don't think it's worth even worrying about. This engine uses about 8-10 lb/min of air during normal 60 mph cruise that the amount of oil vapor sucked in is less than 0.5%. I don't think you could even measure the effiency gain on removing CCV vapor. Environmental conditions would have ten times more of an impact. The worst thing with CCV vapor is it mixing with the egr and gumming up.
I agree with this 100%

Will you see big gains... Probably not. Is it healthier overall for the life of the motor, yes I'd say so.

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post #114 of 390 Old 09-19-2012, 04:04 AM
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Quote:
Originally Posted by tnadanzig View Post


...


The worst thing with CCV vapor is it mixing with the egr and gumming up.
Agreed. Then, the resistor mod is a good alternative to a costly repair :-)

Next thing to do (EHM) when the electrical problems plaguing my JGC are fixed.
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post #115 of 390 Old 09-19-2012, 09:48 PM
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Looking forward to when the plugs are available. CEL came on today, resistor burned out. Cheap carbon film resistor from Radio Shack.

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post #116 of 390 Old 09-20-2012, 07:28 AM
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Do you think it was a cheap resistor or part of the environment that caused the failure?

I could use a part number of the swirl motor or if anyone has an old one they replaced does it have a brand on it or anything, that would really help in finding the correct plug to make this mod from.

Thanks

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post #117 of 390 Old 09-20-2012, 05:45 PM
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Can you get that part # or even a swirl motor from your local Jeep dealer in Texas?
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post #118 of 390 Old 09-20-2012, 06:25 PM
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I'll ask but electronics parts are non returnable and must be pre paid so that's a no go unless they have one on the shelf

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post #119 of 390 Old 09-24-2012, 03:22 PM
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Hey guys, my dealer today said my swirl valve needs to be replaced. So vague with information. Not sure if this mod would help solve the problem or if im really looking at 4000 bucks to fix this crap. Can anyone help me?
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post #120 of 390 Old 09-24-2012, 03:31 PM
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Yes this should fix your issue. Just by unplugging the swirl motor it should default to the open position and the resistor clears the CEL.

Can I get you to get the part number for the swirl motor from your dealer please. That will help me find the right connector to make these resistor plugs.

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