well lets hope it puts the TD5 knockers back in their box :pQuote:
Originally Posted by Slunnie
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well lets hope it puts the TD5 knockers back in their box :pQuote:
Originally Posted by Slunnie
Hi, Just out of curiosity, has any one measured the bores of a stuffed Td5? It would be interesting to see how much wear they typically have after a couple a hundred thousand k's. I know my 1st 200tdi had basically none when I did the head gasket at 150,000, the hone marks were still very visible.
Regards, Jack
Hone marks were still clearly visible on my 4yo 99 TD5 at 170K and so they should have been in any decent engine that doesn't get too abused.Quote:
Originally Posted by jacknz
No, that was WAAAYYY before that trip. The dowels had failed the first time due to overheating, caused I think from a leaking radiator, and the water level got low. This is the cause of the dowel failures mostly, after the engine gets hot for any reason, the head shifts because the locating dowels can't cope, they melt and soften with heat anyway:mad: So then the head gasket fails because the sealing rings are compromised.Quote:
Originally Posted by Slunnie
Basically, if you get the later Td5's with steel locating dowels hot, then at least they are more forgiving and won't allow the head to then move over enough to start a compression leak into the cooling system.
I'm in the middle of doing a 150k old 2000 model 110 head gsaket replacement, it has gotten hot about a year ago, and recently started using coolant and pressurising the system so much that the expansion bottle was leaking.
I pulled the head to find 1 broken dowel, and one half cut through. Number 3 cylinder had a leak through the fire ring to the water jacket.
All back together tomorrow after a manifold and head skim.:)
JC
i have done just over 190k now.
heres a snap i had to take on the road recently
https://www.aulro.com/afvb/
I should say that when my head was rebuilt at just over 200000km the bottom end was still like new! We were quite surprised at it's condition.
I have also had a wesh plug fail - Easy fix
Water pump go - easy fix
Transfer rear out put seal - Pain in the bum but 3rd time fixed
almost lost a rear brake caliper:eek: from loose bolts
Broken rear tail shaft
Almost lost the rear tail shaft loose bolts again:angel:
Oil in the ECU once - easy fix. just remove it and clean with contact cleaner till you can get a replacement.
Also had the headlight switch failure.
Starter motor - Went to leave once and found it floating in the engine bay an no bolts:mad:.
Over all its a great machine
Reading all the posts, this one takes the record, 390,000 klm. Assuming its the one motor.:D
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Interesting thread, notice no reports of the "stud driving the oil pump" issue.
But the "plastic locating dowels" in the head fascinate me.
Surely they (plastic or steel) are only a locating reference for the cylinder head.
If they have fretted it can only mean the head studs have stretched allowing the head to move laterally and loose gas seal contact with the block. This would surely be exacerbated by having only 12 studs (x diam?) holding 5 cylinders with the studs extending into a hole in the block before the threads engage.
Surely the replacement with steel dowels cant compensate for a "loose cylinder head".
Perhaps that these engines last so long is in spite of themselves. I have contempated a td5, but the more I see about that engine I think the 300tdi will now see me out. (72, probably only 18 short years!)
llandro
:eek::eek:may be this should go in the medical section!!:D:wasntme::p:angel:Quote:
Originally Posted by George130
My thoughts too, although steel dowels will prevent the head from walking so far that the valves damage the bore that the plastic ones allow. Those bolts are long as they go almost to the bottom of the block and just stretch a bit more than they had during head installation.Quote:
Originally Posted by llandro
If mine ever overheats due to an external problem such as a busted coolant hose, I will re-torque the head as soon as I can to try to prevent a gasket replacement. If it doesn't work, I've lost nothing.