TD5 Head Plastic Dowel Part Number.

[bryan]

Could anybody give me the part number for that plastic dowel used to locate the early td5 heads?

I can easily find the part number for the metal dowel (YLL500040) but not for the plastic one.

(I don't want to open a debate about steel vs plastic -- I've decided that on balance the plastic is the go for my early engine)

I've looked and looked but can't find it.

thanks!

Bryan.

[bryan]

Wouldn't you know it. As soon as I posed the question I found the part number. Its LCL100020


thanks

Bryan.

[Roverlord off road spares]

Glad we all could help:D

[BIG O]

Why???

[clubagreenie]

I thought the plastic were superseded and you could only get the steel?

That LCL100020 part no is listed for 1999-2003, the range of my book. There's no supplementary listing for later models or super-sessions. For completeness, can someone list the steel part number in case someone is looking and searching later, plus I can add it to my book.

[mools]

Part number is in the first post.

[OffTrack]

I thought the plastic were superseded and you could only get the steel?

The plastic dowels are still the officially mandated replacement on EU2 engines. LR specifically warn against fitting steel dowels to the EU2 engine as there is a risk of cracking the heads at the drillings.

[woko]

This a bit off topic, Bryan can use what he wants, its his engine, but I have fitted steel dowels to heaps EU2 engines and have never seen a one crack because of the steel dowels. I even use the TD5 steel dowels in my L series freelander when I done the head. (Freelanders use the same plastic head dowels)
Is there anyone who has seen one crack because of the steel dowels?

[OffTrack]

Id make the observation that the plastic dowels are generally causing head gasket failures at 200,000+ Km.

Until we see EU2 Td5's making the same kind of mileage after steel dowels are fitted claims of "no problems" are a little premature.

[sniegy]

This a bit off topic, Bryan can use what he wants, its his engine, but I have fitted steel dowels to heaps EU2 engines and have never seen a one crack because of the steel dowels. I even use the TD5 steel dowels in my L series freelander when I done the head. (Freelanders use the same plastic head dowels) Is there anyone who has seen one crack because of the steel dowels?

Seen a few.

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[woko]

Seen a few.

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where did they crack?

[woko]

Id make the observation that the plastic dowels are generally causing head gasket failures at 200,000+ Km.

Until we see EU2 Td5's making the same kind of mileage after steel dowels are fitted claims of "no problems" are a little premature.

1st head gasket I did on a TD5 was at 62000km, and have done a lot under 100000km. also LR released TSB about fire ring wear into the head in 2000/2001. How did they get warranty claims for heads wear if heads weren't removed? The steel dowel TSB was released in 2003/2004. there is alot of EU2 TD5 out there with steel dowels fitted with a lot of km on them after steel dowels fitted

[rangieman]

My 04 D2a 220 ks the head has never been off;)

[sniegy]

where did they crack?
They tend to crack the head around the dowel hole. Towards the rear of the motor. Have seen a couple with minor cracks (hard to diagnose & X-Ray had to be used in some cases) & a minority with a fair crack that can be easily seen.
Again not all but it can happen.
The dowels don't of anything apart from locate the head onto the block.
Cheers

[Disco Muppet]

I've been tossing up between plastic and steel dowels for when I do the HG early next year.
As OffTrack says, the plastic ones are seemingly only a problem after 200k +
I'd rather have to do the head gasket again in 200k than run a risk of cracking the head, however minor that risk may be.
Just IMO

[djam1]

I know of one that has done 350,000 Ks on the original plastic dowels

[sniegy]

My old D2 when I sold it had 295K Km's & also never had the heads off. Exhaust manifold was a different story tho'

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[Sitec]

Easy way to rectify this... Fit the steel dowels, but enlarge the holes in the block by a few thou.. All that have to do is locate the gasket and then the head. If the head does move that few thou, then no dramas, no cracks, and no plastic dowels turning to powder! :)

[toad]

My 1999 td5 Defender did the head gasket just out of warranty, steel dowels were not available then so I made my own hollow tube ones, still going strong now with over 400 000 km on it now!