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The CRD is a throw away motor? Fact or Myth?
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=38357		 Page 1 of 2
Author:  dieselenthusiast [ Thu Dec 18, 2008 8:29 pm ]
Post subject:  The CRD is a throw away motor? Fact or Myth?
I’ve heard that the CRD can not be overhauled. Unlike the Dodge Cummins, once the 2.8 VM motori engine has run its course, then it’s done!
Author:  05infernoCRDL [ Thu Dec 18, 2008 8:39 pm ]
Post subject: 
i think it is a myth.... don't we have wet sleeves that are iron so that they are replaceable?
Author:  onthehunt [ Thu Dec 18, 2008 8:59 pm ]
Post subject: 
You have the engines switched around.
Author:  dieselenthusiast [ Thu Dec 18, 2008 9:03 pm ]
Post subject: 
onthehunt wrote:
You have the engines switched around.


I know the 5.9 Cummins can be overhauled, I think Cummins says they can be overhauled up to 3 times. "The average major overhaul interval was 350,000 miles."
Author:  DarbyWalters [ Thu Dec 18, 2008 9:07 pm ]
Post subject: 
Ours has wet sleeves that can be replced I believe.
Author:  onthehunt [ Thu Dec 18, 2008 9:15 pm ]
Post subject: 
The Cummins is a parent bore engine and the VM has wet sleeves. Based just on that the Cummins is more of a throw away engine than the VM.
Author:  dieselenthusiast [ Thu Dec 18, 2008 9:30 pm ]
Post subject: 
onthehunt wrote:
The Cummins is a parent bore engine and the VM has wet sleeves. Based just on that the Cummins is more of a throw away engine than the VM.


I never thought of it like that, but that’s a valid point.
Author:  yakers [ Fri Dec 19, 2008 12:23 am ]
Post subject: 
What would be involved in an overhaul of CRD? Has anyone done one? What would it cost? If the engine isn't broken how would you know its time for an overhaul--some amount of miles or some performance diagnosis?
Author:  retmil46 [ Fri Dec 19, 2008 1:32 am ]
Post subject: 
Depends on which CRD you're talking about. Liberty - No, it's rebuildable. Grand Cherokee - Yes, it's glued together.
Author:  nursecosmo [ Fri Dec 19, 2008 3:18 am ]
Post subject: 
Lots of R428's, both Turbocharged and NA get rebuilt everyday in marinas all over the world.
Author:  Uffe [ Fri Dec 19, 2008 4:59 am ]
Post subject: 
nursecosmo wrote:
Lots of R428's, both Turbocharged and NA get rebuilt everyday in marinas all over the world.


That's not a pleasant thing to know is it? :shock:
Author:  dgeist [ Fri Dec 19, 2008 9:46 am ]
Post subject: 
nursecosmo wrote:
Lots of R428's, both Turbocharged and NA get rebuilt everyday in marinas all over the world.


Now i know where to look for a good VM mechanic in a couple hundred k miles :)
Author:  vegiH [ Fri Dec 19, 2008 10:44 am ]
Post subject: 
Let us not forget that the VM has been around for a while,and will remain a mainstay for small diesel applications.Marine engines usually do not last as long,do to extreme duty under 1/2 load or less.That is why you see big "work" boats with little engines,If you keep the rpms up less carbon build up,and less dried out seals.In my experiance with diesel boats,the biggest life shortening issue is non-use ie;dry-dock,or winter storage.I have seen photos of jeep like rigs in europe with VM lil diesels in them(my cousin was a marine in the 1980s,stationed in europe and asia).It's a old school engine with new school injection on it(cp3),thus it should have more longevity then its predecessors(with a segr ofcourse :wink: )........................H
Author:  tonycrd [ Fri Dec 19, 2008 10:51 am ]
Post subject: 
You can rebuild any engine. Wet sleeve or not.

Specialists can widen the cilinder bore or even fit new sleeves in a non sleeve engine.

Couple of slightly bigger pistons and you're done.

When do you rebuild an engine...imo not before you have mayor power loss due to worn out piston rings or crankshaft damage.

vegiH wrote:
Let us not forget that the VM has been around for a while,and will remain a mainstay for small diesel applications..It's a old school engine with new school injection on it(cp3),thus it should have more longevity then its predecessors(with a segr ofcourse :wink: )........................H


I'd like to disagree with you a little, the VM we have has nothing to do with the old one used in the XJ and Voyager.

It's a crisp new design with twin OHC and 16V, most of you already know this but never owned one of the older VM engines. That was a (very) Old School diesel engine with only one cam and pushrods and 8 valves. It had 4 separate cilinderheads because it originaly came out as an industrial engine (to use in genarators / boats / that stuff) making it easier to just add a cilinder to their basic design as they did with the 5 cyl engine found in the '99 3.1 GC.

The CRD from the Grand Cherokee (2.7/3.0) however is Mercedes engine they no longer needed for their E series passenger cars.
Author:  Glend [ Fri Dec 19, 2008 7:57 pm ]
Post subject: 
Agree that the VM CRD can be rebuilt. VM's history, in Marine and other uses indicates that they build for longevity. I recently surveyed KJ CRDs in Australia and have found one with over 220,000 Kilometres on the clock - with no problems or bad history (other than a belt pulley collapse), its still going strong. So if you look after them with good service (and certain mods ie Provents) it will be a long time between rebuilds. The way things are going I expect that I will be able to get VM parts for alot longer than Chrysler parts. Luckily VM is represented by diesel service agencies here so service and parts will be available ongoing.
Author:  nursecosmo [ Fri Dec 19, 2008 8:10 pm ]
Post subject: 
Glend wrote:
Agree that the VM CRD can be rebuilt. VM's history, in Marine and other uses indicates that they build for longevity. I recently surveyed KJ CRDs in Australia and have found one with over 220,000 Kilometres on the clock - with no problems or bad history (other than a belt pulley collapse), its still going strong. So if you look after them with good service (and certain mods ie Provents) it will be a long time between rebuilds. The way things are going I expect that I will be able to get VM parts for alot longer than Chrysler parts. Luckily VM is represented by diesel service agencies here so service and parts will be available ongoing.


If you know of any suppliers with websites down under could you post the links?
Author:  warp2diesel [ Fri Dec 19, 2008 11:51 pm ]
Post subject:  Myth; wet sleeve engines like our CRDs are not...
...Throw Away. When you can't bore the engine out, grind the crank, or replace the sleeves, you have a throw away engine by definition. One engine that comes to mind is the old 3008 Caterpillar V8, that was designed to be a throw away engine developed for medium duty trucks. When the response was negative,Cat developed the 3208 that was a better engine.
Even engines like Mercedes Automotive Diesels that have no bore out option can be re-sleeved with service sleeves, been there done that. Cranks that can not be ground can be sprayed and re-hardened and reused.

Opinions uttered by those who think they know are like the part of the body that proctologist study.
Author:  onthehunt [ Sun Dec 21, 2008 9:07 pm ]
Post subject: 
Quote:
Cat developed the 3208 that was a better engine


I consider the 3208 a throw away engine along with the Ford dumptruck it's in. POS!!!
Author:  nursecosmo [ Sun Dec 21, 2008 9:21 pm ]
Post subject: 
I have many, many 3208's and 3210's completely rebuilt in Central America. They are the most popular engines used in the old converted school buses which haul most of the people around. They can be rebuilt many times over and the parts are cheap.
Author:  onthehunt [ Sun Dec 21, 2008 9:24 pm ]
Post subject: 
Quote:
I have many, many 3208's and 3210's completely rebuilt in Central America


Yep, they get all our clapped out junk.
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