CDR What do you think?

[turbovanman]

I like my CDR setup, I put aprox 10,000 km's on it with the new intake and its bone dry, :thumbsup:

IMO,Aint gonna change dick all,just makes it harder to add oil.
That's where the 6.2's had the CDR feed line from originally,just below the fill cap.
You better of to vent that thing to the atmosphere(illigal in CA i presume):rolleyes5:

Guess you better tell the Cummins guys their illegal, ):h

Yeah, no emissions checks for diesels, funny huh. They wont let you buy a new passenger diesel truck in CA, and people that have them have to pay high registration fees. Luckily I am registered in IL, no emissions checks there either.

CA is planning to start checking 97+ diesel trucks, OBD2. Imagine the revenue they can generate by adding fees.

And I just read that ANY diesel passing thru CA is eligible for inspection, that means you, me, anyone and they will be checking for emission controls in place/tampering etc. That state is taking a huge crap, :sad:

 

[dangerousdave]

bump. good stuff; stirring the pot

 

[Acesneights1]

Bump. I happen to have an Oil fill tube from an 83 with the t for the cdr but what I didn't quite get from JD's post was can I just use that or was there some kind of shield in the timing case cover of that old 6.2 ?

 

[buddy]

I doubt there would be a screen in the timing cover. Junt need to mount it somehow. It was mounted on top of the valve cover I believe, just not plugged into the valve cover.

 

[Acesneights1]

I gotcha. Well I wa thinkin use the fill tube from the 83 to get the CDR away from the VC but use the 6.5TD CDR as the one for the 6.2 maybe different pressure wise as a NA no ?

 

[buddy]

Yeah, the 6.5TD has a different CDR than NA engine.

 

[iamdave0887]

The N/A 6.2 CDR is discontinued right?

I've got a few kicking around here Kenny, if you need one. They are all god knows how old but with a quick cleaning they should still be fine.

 

[Acesneights1]

According to JD, You should NOT clean them. If they are malfunctioning, replace it. Just spent time reading his thread over at the old place on it.

 

[bison]

So,all you "scared of piping the emmisions to the atmosfeer people".
What kinda CDR you think are they gonna use on the burn off of the Gulf of Mexico oil spill?)
Got to give off a few fumes there.:smile5:

 

[Acesneights1]

My concern isn't emmisions. Positive pressure in the crankcase causes leaks. I am actually trying to figure a way to rig a CDR on my 8.3CTD. POS engine has more leaks than the Titanic. Fix one, two more appear. It's factory vented to atmosphere.

 

[bison]

Ofcourse negative pressure will keep oil from blowing past a seal,
but if oil seals leak,then the seals are bad "period".
A crank seal should withstand at least 5 to 15 psi of pressure,more on hydr pump seals.
On a outside vented engine there is no pressure,so an open CDR will also have no crankcase pressure.
The 95 in my sig has been vented to the world now for 60.000 km and is still as dry as bone on the crank seals.
My 98 has the provent on it,but the seals started sweating allready within 5000 km.I blame it on the crappy quality seals i put in when i rebuild the engine.

 

[Crankme69]

On my Harley Davidson V Twin after building the engine before it ever gets run I vent the head breathers to the ground. Not gonna spend that kind of $$ to do the heads set the deck height & run the squish at .030 to suck that muck back into the intake, just don't need any additional ways to create carbon on them piston tops.

I'm reading here & trying to learn...this for sure is not a VTwin lol but I can see the advantage to keeping the intake clean on any combustion engine.

 

[Acesneights1]

Yeah but what everyone is not hearing is that Neg pressure is necissary or you'll strat getting leaks in funny places. That I don't want.

 

[Acesneights1]

I actually started another thread about the crankcase pressure but to you non believers...humor me and do this simple test. With oil fill cap on nice and tight, disconnect your CDR at the turbo elbow and hold your hand over it for a few seconds(not too long or leaks you be gittin) and see how much pressure it will build. My engine is tight and it was substantial. I even tried it on the CUCV which has 59k on it. Same thing. The CDR is there to allieviate that pressure. It is a closed system Like Missy said gasses are a buildin'

 

[buddy]

Negative pressure is not exactly necessary, but it can help if you have poor seals. It is preferrable, but then some people dont like an oily intake. And you might as well burn them fumes, why not, its more fuel that you paid for. A well vented system typically has a breather on both valve covers. As long as there is a way to vent the pressure will leave. With just a breather I do see all that blowby coming out of it. It vents.

 

[bison]

I actually started another thread about the crankcase pressure but to you non believers...humor me and do this simple test. With oil fill cap on nice and tight, disconnect your CDR at the turbo elbow and hold your hand over it for a few seconds(not too long or leaks you be gittin) and see how much pressure it will build. My engine is tight and it was substantial. I even tried it on the CUCV which has 59k on it. Same thing. The CDR is there to allieviate that pressure. It is a closed system Like Missy said gasses are a buildin'

well Ace you dont need a univerity degree to figure out that blowby is gonna build pressure in the crankcase if you plug the way out.You try to sneeze with both nostrils plugged,see what happens):h

 

[Acesneights1]

Yeah and my point being is that having the cdr helps it exit.
Achooo.
I'm trying to rig up a CDR on an 8.3CTD I have cause the POS leaks from every crack due to crankcase pressure. Nothing wrong with the engine. They are known for oil leaks.

 

[bison]

Yea,CDR exist notting,the turbo does
You better of with a provent on that engine.

If it now is vented outside and it leaks,then you will still have leaks hooked up to the turbo.

You sure the vent pipe screen aint plugged on that mill?

 

[WarWagon]

Bump. I happen to have an Oil fill tube from an 83 with the t for the cdr but what I didn't quite get from JD's post was can I just use that or was there some kind of shield in the timing case cover of that old 6.2 ?

There is a shield under the timing cover in the old 6.2 to keep the oil spray from the chain down. I suppose it helps to keep the CDR from sucking too much oil out or oil being blown out to the CDR...

 

[Acesneights1]

There is a shield under the timing cover in the old 6.2 to keep the oil spray from the chain down. I suppose it helps to keep the CDR from sucking too much oil out or oil being blown out to the CDR...

OK so the 6.5 doesn't have that shield and using an oil fill from a 6.2 with the extra pipe isn't a good idea unless I swap the whole timing cover which aint happenin.
The 8.3 CTD contantly finds new places to leak. My 3208T has a CDR and that engine has over 400k no leaks. The 8.3 CTD has 140k and leaks almost as bad a 2 stroke Detriot. POS of an engine for sure.