Not only does it allow it to cool down but slow down and it allows the cooling system to pull heat out of the head. When you run up stop and shut down that turbo is wizzing , not as hard as when under load and it is spinning on a film of oil . Remove the oil pressure to soon and the bears will take hit . Maybe it will not affect them all at once but over time they will ware and then the seals start to go due to sloppy bearings . also when you just shut down combustion chamber temps rise and the coolant flow is not there to pull the excess heat out . My one friend is on his SECOND turbo on his Dodge because he thinks it is like a gas engine . Fire it up allow no warm up and out the lane and down the road full tilt , get to where your going pull in and shut down as your walking away from the truck you can hear the turbo spooling down . Years back while working in the oil patch i ran a 750 Deere dozer and a 450 C ,Both had what i thought was a extream high engine idle , the 450 was up around 950 and the 750 was over a 1000 RPM . Even letting them set and cool down for 10-15 min while you cleaned tracks when you shut them down you could still hear the turbo spinning for 15- 20 seconds after the engine was shut down thru the mufflers.
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
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