EHM not suitable for customer why provent over catch can?

38turbo · **Joined:** Fri Apr 08, 2016 10:03 am **Posts:** 10

Been reading threads seems like provent is the most common used ccv oil trap on the crd's... is there a specific reason for using the provent over the many catch cans available?

flash7210 · **Posted:** Fri Feb 03, 2017 7:05 pm

The provent has two saftey relief valves and a servicable filter.

GordnadoCRD · **Posted:** Fri Feb 03, 2017 8:07 pm

1) They work

2) They continue to work.

WWDiesel · **Posted:** Fri Feb 03, 2017 10:44 pm

A great addition to the Jeep CRD diesel to keep the oil out of intake system and intercooler! They should have been installed by the factory when built! :roll:

PZKW108 · **Joined:** Sun Apr 06, 2014 5:23 pm **Posts:** 461

https://www.youtube.com/watch?v=nz2eBsSwwQs

Mountainman · **Posted:** Sat Feb 04, 2017 1:32 am

They also keep the turbo vacuum in the loop which helps keep the main seal from failing on this engine.

WWDiesel · **Posted:** Sat Feb 04, 2017 11:56 am

38turbo wrote:

Been reading threads seems like provent is the most common used ccv oil trap on the crd's... is there a specific reason for using the provent over the many catch cans available?

Based on experience by members on this forum that some of us have been able to ascertain; there is nothing else available that performs any better and it does what the manufacturer says it does and it does it well.... :wink:

Sir Sam · **Posted:** Sat Feb 04, 2017 2:45 pm

Mountainman wrote:

They also keep the turbo vacuum in the loop which helps keep the main seal from failing on this engine.

I agree it keeps turbo vacuum in the loop. I disagree it makes any difference on the life of the rear main seal.

38turbo · **Joined:** Fri Apr 08, 2016 10:03 am **Posts:** 10

Ok after more research , I am going to recommend the provent to my customer. The only thing I am not clear on, is the oil drain on the provent. Does it have to be routed back into the crankcase for proper operation, or is a length of hose with a drain valve acceptable? I found conflicting information on this. Obviously the crankcase drain would be optimal but will add labor costs to the install.
Thanks

rankom · **Posted:** Sat Feb 04, 2017 5:30 pm

LOL , with respect to all of you and especially to Papa , Sir Sam , WW and all the VETERANS on this forum ,,,,, my opinion is yes to provent. in the other case you can install copper tube and vent it to atmosphere , same as cummins 5.9 12 valve. or if you are not happy with that then drill your oil fill cap YELOW and install one more vent to atmosphere BLOW BY and be happy with it . OH YES if somebody at a traffic light gives you a warning that your rig is smoking , tell them i know and it is VM MOTORI THING

Sir Sam · **Posted:** Sat Feb 04, 2017 8:14 pm

38turbo wrote:

Ok after more research , I am going to recommend the provent to my customer. The only thing I am not clear on, is the oil drain on the provent. Does it have to be routed back into the crankcase for proper operation, or is a length of hose with a drain valve acceptable? I found conflicting information on this. Obviously the crankcase drain would be optimal but will add labor costs to the install.
Thanks

I think the ideal way is to plumb the drain back to the oil pan, however this does add more complexity, but makes for one less maintenance thing to worry about.

WWDiesel · **Posted:** Sat Feb 04, 2017 9:00 pm

38turbo wrote:

Ok after more research , I am going to recommend the provent to my customer. The only thing I am not clear on, is the oil drain on the provent. Does it have to be routed back into the crankcase for proper operation, or is a length of hose with a drain valve acceptable? I found conflicting information on this. Obviously the crankcase drain would be optimal but will add labor costs to the install.
Thanks

I simply have about a 3 foot length of hose on the drain with a simple valve on the end of the hose that I drain about once every other month. Oddly the volume of oil caught in the Provent seems to have gotten smaller as time goes on. I have no explanation as to why... :roll:

95Z28A4 · **Joined:** Sun Mar 30, 2014 9:53 am **Posts:** 297

WWDiesel wrote:

38turbo wrote:

Ok after more research , I am going to recommend the provent to my customer. The only thing I am not clear on, is the oil drain on the provent. Does it have to be routed back into the crankcase for proper operation, or is a length of hose with a drain valve acceptable? I found conflicting information on this. Obviously the crankcase drain would be optimal but will add labor costs to the install.
Thanks

I simply have about a 3 foot length of hose on the drain with a simple valve on the end of the hose that I drain about once every other month. Oddly the volume of oil caught in the Provent seems to have gotten smaller as time goes on. I have no explanation as to why... :roll:

I did the same on my wife's CRD. I used a small ball valve for the drain valve. I change oil at 6k miles and drain the provent every 3k miles. I consistently get 3 - 4 ounces of oil from the drain hose.

I attached a link to the ball valve that I used. I threaded a 3/8" NPT x 1/2" hose barb into the female end of the valve and cut the male threads from the valve. It's compact and doesn't leak a drop. I can reach the valve from behind the driver's side front wheel. Draining takes less than 2 minutes.

https://www.amazon.com/gp/product/B00NJ ... UTF8&psc=1

thermorex · **Posted:** Mon Feb 06, 2017 10:13 am

What is very important: if you drain the oil under the vehicle, use either a release valve (lets oil out but doesn't let air in - when you have negative pressure), either a normal valve as previously mentioned.

Release valve is especially needed if you drain the oil back to the engine above the oil pan level. Or if you just drain it under the vehicle, but a normal valve serves the same purpose. The idea is to not just have a draining hose w/o any valve on it.

flman · **Posted:** Mon Feb 06, 2017 1:38 pm

Sir Sam wrote:

Mountainman wrote:

They also keep the turbo vacuum in the loop which helps keep the main seal from failing on this engine.

I agree it keeps turbo vacuum in the loop. I disagree it makes any difference on the life of the rear main seal.

If that is the case, why have many people blown their rear seals, with the EHM vs none for the intact CCV or the provent?

Mountainman · **Posted:** Mon Feb 06, 2017 2:19 pm

Keith at GDE said they hadn't seen rear main seal problems with the stock config, and I have seen them with the EHM in the summer (no ice clog). I do agree that there isn't enough data that it has definitely caused the failures in warm weather, but it makes sense since there's more pressure on the seal. Heat may be the biggest main seal killer, but it's too much work to take chances with IMO. The factory elbow lasts 100k miles or more with oil exposure, so the stock configuration isn't so bad if the EGR soot is completely out of the picture.

WWDiesel · **Posted:** Mon Feb 06, 2017 3:45 pm

Mountainman wrote:

Keith at GDE said they hadn't seen rear main seal problems with the stock config, and I have seen them with the EHM in the summer (no ice clog). I do agree that there isn't enough data that it has definitely caused the failures in warm weather, but it makes sense since there's more pressure on the seal. Heat may be the biggest main seal killer, but it's too much work to take chances with IMO. The factory elbow lasts 100k miles or more with oil exposure, so the stock configuration isn't so bad if the EGR soot is completely out of the picture.

X2

38turbo · **Joined:** Fri Apr 08, 2016 10:03 am **Posts:** 10

Thanks for the help and suggestions guys.... did the install today turned out OK I'll post some pictures of the bracket I made to hold the provent canister later on tonight...

mass-hole · **Posted:** Sat Feb 18, 2017 6:42 pm

Mountainman wrote:

They also keep the turbo vacuum in the loop which helps keep the main seal from failing on this engine.

Why wouldnt a catch can? This is how my Ecoboost is set up.

WWDiesel · **Posted:** Sat Feb 18, 2017 8:53 pm

mass-hole wrote:

Mountainman wrote:

They also keep the turbo vacuum in the loop which helps keep the main seal from failing on this engine.

Why wouldnt a catch can? This is how my Ecoboost is set up.

Does your econboost have a vacuum pump discharging into the engine's crankcase in addition to normal piston blowby? I bet not; totally different designs!

EHM not suitable for customer why provent over catch can?

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