Cracked Cylinder Heads

mackruss · **Posted:** Fri Jan 30, 2009 2:29 pm

Hi Folks

Are we prone to cracked cylinder heads on the CRD?

Cheers

BlackLibertyCRD · **Posted:** Fri Jan 30, 2009 2:31 pm

I haven't heard of one yet?

tonycrd · **Posted:** Fri Jan 30, 2009 2:51 pm

Only if you still have a 2.5 diesel Chrysler used in the XJ

gmctd · **Posted:** Fri Jan 30, 2009 3:23 pm

No, but when the intake valves crack open and the turbo is in full siren song, we are prone to heady exhiliaration....................

Wobbly · **Posted:** Fri Jan 30, 2009 4:22 pm

gmctd wrote:

No, but when the intake valves crack open and the turbo is in full siren song, we are prone to heady exhiliaration....................

especially if we've exhausted our lithium prescription

gmctd · **Posted:** Fri Jan 30, 2009 4:56 pm

Aw, man, I thought that stuff was fer chassis\suspension lubrication.................

Wobbly · **Posted:** Fri Jan 30, 2009 5:08 pm

gmctd wrote:

Aw, man, I thought that stuff was fer chassis\suspension lubrication.................

You're thinking about glucosamine and/or chondroitin

warp2diesel · **Posted:** Fri Jan 30, 2009 10:48 pm

Wobbly wrote:

gmctd wrote:

No, but when the intake valves crack open and the turbo is in full siren song, we are prone to heady exhiliaration....................

especially if we've exhausted our lithium prescription

.....they let the guy that takes lithium grease the belt press, with all of those grease zirks, he gets the dose he needs every day. Until he goes on vacation and gets weird until he goes back to work :lol:

Some Millwrights act that way too

Uffe · **Posted:** Mon Feb 02, 2009 2:57 am

I haven't heard of a single cylinder head to bust on the CRDs yet. But the current mileage leaders are around the 120,000 mark.

I did a survey once, because I too was worried about cylinder heads. Fortunately nobody ever changed anything on the CRD heads.

I talked with MrMopar64 and he told me they use a special flexible cylinder head gasket which makes the head and gasket last for a very long time.

mackruss · **Posted:** Mon Feb 02, 2009 8:30 am

That's good to read, i had a Mitsubishi Colt 2.8l TDI that was prone to cylinder head failure due to overheating problems with the turbo.

Uffe · **Posted:** Mon Feb 02, 2009 12:05 pm

mackruss wrote:

That's good to read, i had a Mitsubishi Colt 2.8l TDI that was prone to cylinder head failure due to overheating problems with the turbo.

You mean shogun or L200 I guess?

That was probably with in-direct injection, which does wonders for heating up your engine head. Direct injection has much lower heat losses in the head construction. That also helps the CRD to stay cool.

gmctd · **Posted:** Mon Feb 02, 2009 12:06 pm

The VM 2.8L engine has 6 head-bolts per cylinder - most other smallish Diesel engines have had only 4 per, hence the head-gasket and head problems with the high compression ratio - additionally, run any engine without proper coolant mixture, or low coolant, and the head is usually first to crater - most of those early Diesels, at ~100kmi, were second and third owner vehicles, where the owner wanted to get in on the Diesel-wave, with no-to-little Diesel savvy, and having performed no comprehensive pre-preventive maintenance prior to using the vehicle - still see similar problems with 2nd\3rd owner Cummins trucks, which have medium\heavy-duty engines, having been rode hard and put up wet by multiple owners - I think we'll see more higher-mileage failures in this engine resulted from 2nd\3rd owners not replacing the timing belt, stripped pan-bung, and running disproportionate water\coolant mixtures - may also be some failures at any mileage resulted from knocking off the extremely low-mounted oil filter in some ill-advised off-roading event

Other than those, this engine is used in non-turbo form in taxis and other commercial and industrial service all over Europe, thus the wet-liners and 6-bolt\cylinder configuration, where two bolts are shared, with 4 dedicated - unlike those with 4 bolts per, where all 4 bolts are shared

MrMopar64 · **Posted:** Tue Feb 03, 2009 9:01 am

The gasket is just a standard MLS (Multi Layer Steel) gasket that's coated for coolant sealing. These are used on most all turbocharged engines that I know of now.

As for the head, there are "6" per cylinder but only 4 are directly around the bore providing clamping force, as opposed to the design of say an old Chrysler B/RB engine that has 5 around the bore.

Uffe · **Posted:** Tue Feb 03, 2009 9:45 am

MrMopar64 wrote:

The gasket is just a standard MLS (Multi Layer Steel) gasket that's coated for coolant sealing. These are used on most all turbocharged engines that I know of now.

Thank you for chiming in. I was going by memory when I wrote that message.

I think I also remember that you said something about head gaskets of newer direct injected turbo diesels used an improved head gasket design (MLS?) compared to older indirect injected diesels.

mackruss · **Posted:** Tue Feb 03, 2009 1:53 pm

Uffe wrote:

mackruss wrote:

That's good to read, i had a Mitsubishi Colt 2.8l TDI that was prone to cylinder head failure due to overheating problems with the turbo.

You mean shogun or L200 I guess?

That was probably with in-direct injection, which does wonders for heating up your engine head. Direct injection has much lower heat losses in the head construction. That also helps the CRD to stay cool.

Perhaps called that in Europe but in South Africa they were called Colt and recently replaced with the new Triton range.

Coal Cracker · **Posted:** Tue Feb 03, 2009 3:27 pm

[
Other than those, this engine is used in non-turbo form in taxis and other commercial and industrial service all over Europe, thus the wet-liners and 6-bolt\cylinder configuration, where two bolts are shared, with 4 dedicated - unlike those with 4 bolts per, where all 4 bolts are shared[/quote]

I see that Mercruiser is also offering the VM in it's marine applications allong with the Cummins.

I'm satisfied if Mercruiser is :wink:

Uffe · **Posted:** Wed Feb 04, 2009 4:15 am

mackruss wrote:

Perhaps called that in Europe but in South Africa they were called Colt and recently replaced with the new Triton range.

Does it look like this one:

mackruss · **Posted:** Wed Feb 04, 2009 3:53 pm

That's her.

dirtmover · **Posted:** Wed Feb 04, 2009 8:31 pm

Uffe wrote:

I talked with MrMopar64 and he told me they use a special flexible cylinder head gasket which makes the head and gasket last for a very long time.

You mean special expensive! Lets hope it does last a long time

Uffe · **Posted:** Thu Feb 05, 2009 3:58 am

mackruss wrote:

That's her.

Gotcha.

Did you say these had immense problems with heads and gaskets?

I was intending to look at one when I get rich (yeah right) for foresting and joy-riding on the beach

You'd want me to look elsewhere I guess - where?

Cracked Cylinder Heads

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