200tdi blown head queries - Defender Source
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  #1  
Old February 7th, 2015, 11:46 AM
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200tdi blown head queries

Well it was only a matter of time but the head gasket on my 200tdi has now well and truly given up.
I'm wondering if it's cheaper to repair or replace the engine?
Also if I do replace the engine would a 300tdi be any better???
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  #2  
Old February 7th, 2015, 11:50 AM
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Robert Davis
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Where is Aylesbury?
Basic questions with complicated answers...
Are you doing the work or paying someone else?
If so do they oe you know what they are doing when it comes to fixing TDI engines?
Does it need other maintenance, like timing belt?
Is the head off?
Have you checked it for cracks? (common problem)

If it were mine, I would fix it, but that's not always the best choice for someone else.
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Old February 7th, 2015, 11:51 AM
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the gasket is cheap and the job takes about 4-6 hours depending on your level of aplumb. Its common for these to let go @ the back of the head around 100k.
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  #4  
Old February 7th, 2015, 11:56 AM
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Thanks guys. Aylesbury is in Buckinghamshire in the uk.
I'll probably have to pay a mechanic to do the work as I won't have the time myself.
I run a farm and any downtime is costly so it's probably safer a mechanic does it.
Would you recommend a repair or straight engine swap? I've been toying with the idea of a 300tdi for some time as a bit of extra power never hurts but don't know if it will make a noticeable difference.
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  #5  
Old February 7th, 2015, 12:21 PM
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A 300TDI has the same power.

Changing the head gasket is very simple. No need to do anything else.
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Old February 7th, 2015, 02:01 PM
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What causes these head gaskets to blow so consistently?
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Old February 8th, 2015, 07:13 AM
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Having just gone through the exact same analysis, swapping for a 300 was a lot more time as the engine mounts and transmission hook up would need to be modified.

Changing the gasket, as others have said, not a timely or overly expensive endeavor. However you are opening the proverbial can and who knows what worms will come out. In my case it needed reboring, and therefore new cylinders.

If only the gasket is needed you are looking at 4-6 hrs plus the $100 cost of the gasket itself. If anything else is going on then take a guess and then double it!
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Old February 8th, 2015, 08:32 AM
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If you have a 200 buying/swapping to a 300 makes zero sense, none.
There is nothing to be gained and a ton of time money and effort to be wasted.

------ Follow up post added February 8th, 2015 08:35 AM ------

Quote:
Originally Posted by 1of40 View Post
What causes these head gaskets to blow so consistently?
23+ year old gaskets operating @ high temps and 380 or so psi ?
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  #9  
Old February 8th, 2015, 10:28 AM
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Quote:
Originally Posted by Clarky199 View Post
Thanks guys. Aylesbury is in Buckinghamshire in the uk.
I'll probably have to pay a mechanic to do the work as I won't have the time myself.
I run a farm and any downtime is costly so it's probably safer a mechanic does it.
Would you recommend a repair or straight engine swap? I've been toying with the idea of a 300tdi for some time as a bit of extra power never hurts but don't know if it will make a noticeable difference.
I would have the mechanic pull the head, have a machine shop check it for trueness and skim it if needed (some say this should not be done, but it should not be skipped).
Also as mentioned earlier have the head checked for cracks and new valve guides installed if needed.
Have the machine shop extract the old glow plugs as they often get stuck and have the mechanic renew them.
Inspect the rockers and rocker shaft for wear and replace if/where needed.
While the head is at the machine shop, it is a good time to replace the timing belt and water pump.
While the head is off check the cylinder bore and make sure the pistons are in good shape.
I have found cracked pistons while at this same phase of repair.
Results should be a 200TDI that will serve you for a good while.

Best of luck!
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  #10  
Old February 8th, 2015, 11:13 AM
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We are from Whitchurch 4 miles down the road from you, still have a house there.
Another vote for just replace the gasket. Get the head checked for cracks maybe price out a recon head.
While the head if off change the thermostat as it is a pig of a job to do with the head on.
Agree with Doug the 300tdi swap is a lot of work and money for nothing.
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Old February 8th, 2015, 11:28 AM
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Quote:
Originally Posted by kjva View Post
While the head if off change the thermostat as it is a pig of a job to do with the head on.
Agree with Doug the 300tdi swap is a lot of work and money for nothing.
???

Thermostat is an easy 5 minute job.
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  #12  
Old February 8th, 2015, 09:59 PM
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Quote:
Originally Posted by Red90 View Post
???

Thermostat is an easy 5 minute job.
Correct a five minute job if the bolts do not shear off which on 20 year old engines they often do.
The housing then needs to be removed to drill out the sheared bolts.
By the book the head should be removed to access the housing, as the bottom bolt hits the timing cover. It is possible to cut the bolts and use shorter ones and grind the heads down.
It is a relatively common issue on the 200tdi
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  #13  
Old February 8th, 2015, 10:21 PM
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Quote:
Originally Posted by kjva View Post
Correct a five minute job if the bolts do not shear off which on 20 year old engines they often do.
The housing then needs to be removed to drill out the sheared bolts.
By the book the head should be removed to access the housing, as the bottom bolt hits the timing cover. It is possible to cut the bolts and use shorter ones and grind the heads down.
It is a relatively common issue on the 200tdi
Have had similar issues with the thermostat housing.
Even when you heat the bolts with a torch, they still want to break...
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"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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