CDR delete?

[6chevy9]

i noticed this on someones sig on sixfivediesel.com i belive it was. it said CDR delete? is there any benefit to this? or a how to maybe?

 

[buddy]

Search for some Crankcase pressure or depression threads

http://www.thetruckstop.us/forum/showthread.php?t=14053&highlight=crankcase+pressure

http://www.thetruckstop.us/forum/showthread.php?t=22257&highlight=crankcase+pressure

 

[tanman_2006]

http://www.thetruckstop.us/forum/showthread.php?t=20029&page=12

There are some ideas on this topic here.

The main advantage is that you aren't blowing oil back into you intake which causes you to use oil. The separator puts the oil back where it belongs.

 

[Matt Bachand]

http://www.thetruckstop.us/forum/showthread.php?t=20029&page=12

There are some ideas on this topic here.

The main advantage is that you aren't blowing oil back into you intake which causes you to use oil. The separator puts the oil back where it belongs.

Why did they ever change this 6.2 style to the 'add to intake' style? To keep the crankcase at vacuum?

 

[buddy]

6.2 had it to the intake too, the only thing different is where it pulls the vapor from. 6.2 pulled it from oil fill tube and 6.5 moved it to the valve cover. Perhaps engineers thought that too much pressure would build in that specific area of the engine. Prior to that people didnt have CDRs or PCV, and engines still did just fine with breathers on each valve cover. It was done as an emissions reduction, although older cars probably did have a lot more oil leaks, so its benefit is two fold. It really cleaned up the air around Los Angeles too.

 

[Matt Bachand]

And as engines get older and blow-by inreases this would end up making quite a mess. At least when its going into the intake the mess is minimal. I guess its hard to use the turbo/intake as a vacuum source, but not have the vapors go into the the intake.

I use to live in LA around 1990... There was an orange glow to the sky.