I charge the batt's on my truck once a month, prime the fuel line, fire it up to see if the old thrill is still there - today I re-noticed two things of import, one the CDR configuration, the other relating to the current threads on fan clutches, fans, cooling, etc
The '90's CDR system has been in service since ~1986 in several similar forms, but all configured with the tuna can on the turbo-side valve cover, with an internal pre-coalescing screen like a section of 3M pot-scrubber, rubber hose to metal tubing to the compressor housing, short articulated rubber hose to the compressor inlet - not bad until the first time the intake plenum is opened, then whaddamess!! Even worse, if a charge-air cooler has been added, knowing that mess has also taken up residence in that expensive heat exchanger, and no way to clean it, easily - cheer up, folks: relief is at hand, in two forms
Firstly: the early 6.2L CDR system consisted of an oil filler tube with breather port, an internal splash shield covering the timing train, rubber hose connected to the CDR can, with several other hoses\tubes connecting the CDR to either side of the dual-plane intake plenum - ??????? - remember, there were no production line 6.2L turboDiesel engines produced - so what, you ask, with no attempt at disguising your feigned interest - well, a deja vu event occured back around the middle of the new century: all the current 6.5LTD's rolling off the production line have reverted to that original CDR\CCV system, front-mounted, connected to the oil filler tube rather than the valve-cover - guess what: much less oil in the mist exiting that location, far from the turbine snail - remember: hot oil vaporizes easily.
Now, how did I get to this point from tinkering with my truck today? I recently spent much time with a neighbor's very sick '83 6.2L Suburban with over 300kmi on the clock - in the process of timing chainset, seals, IP, injectors, etc, I upgraded the old beastie to the current CDR configuration, as the old parts were unavailable locally - now, being an educated opportunist with some hidden agenda, I confiscated the old stuff, cleaned it up, and with some mixing of old and new parts, most of the modified '83 front-draft system now resides in my charge-air cooled truck - waiting is the blank turbo-side valve cover, to be installed at some as-yet undisclosed opportunity - we shall see how fares the soggy mess with the '06 CDR configuration if I ever start driving it again - also:
Secondly: the Mann Provent CCV filter\scrubber is a cannister that fits between your CDR and the turbo compressor - it absolutely removes 99% of the oily content from the oily crankcase effluent, sends the scrubbed remainder thru the turbo, the oil precipitates back thru the drain and into the crankcase - good news: it is EPA certified, as FoMoCo has authorized dealer-installation on all Diesel vehicles not so-equipped from the factory - I've been running one on my turbocharged and charge-air cooled Jeep Liberty CRD for over 9mos, and the inlet hose from the CCV is oily, the drain hose is oily, but the hose to the turbo inlet plenum is dry - try it, you'll like it
Nextly, and lastly: I have also been considering reverting the engine back to the serp belt configuration, having all the associated parts stashed away for posteriority's sake (this would also involve a new very large air-dam front bumper to alleviate engine-bay turbulence created by the Dana60 front-axle) - again, the thought crossed my mind to look into the electric clutch used on the high-end Tahoe's and such - they can be found on eBay every so often, and are available on-line and from Mr Goodparts - they attach to the waterpump, but have a stabilizing harness bracket and wires attached which connect to the engine harness - I have pics and maybe a pn somewhere on this PC - if I can find them and remember how to post pics, I will do so - I'm thinking the only hassle may be the larger diameter shaft in the 6.5L waterpump, but that ain't no hill fer a stepper.........................
