Thread: Who has fitted Steel head locating dowels (Td5)

Here is some interesting data I have trolled up from D2Au. In this first bit, it's not so much the dates, but the comments re head design and reasons for failure.

> Was it the MY02 or MY03 that brought in the metal dowels?
***Late 03my from memory, also the heads are different hence the
reasonson for the introduction of steel dowels.
(basically locators thats all)
I could presume that the steel dowels were introduced to the later
models because of an increase in torque & power..!

>How frequent do these things fail and are there any trends?
***Not often & no trends, theres normally underlying factors that
contribute to head failure, overheating being a major one of them.

Also this in relation to retrofitting steel dowels. This can not and should not be done for every TD5.

> > Hi Guys,
> >
> > Here is the VIN number range that you are looking for WRT the
steel
> dowels
> > for the TD5 heads, as per info from Smilin Pete:
> >
> >
> > All td5 derivatives within VIN range
> > ds2 02 my 2A736340 - 3A793895
> > def 02 my 2A622424 - 3A647705
> >
> > Cylinder head locating dowels.
> >
> > Td5 engines fitted to vehicles within the above VIN range are
> fitted with
> > plastic dowels to locate the cylinder head onto the cylinder
block.
> >
> >
> > LRE has intrduced steel locating dowels from the following VINs.
> > ds2 - 3A793895
> > def - 3A647705
> >
> > IMPORTANT
> > If a cylinder head is removed from a vehicle in the above VIN
> range, the
> > plastic dowels must be replaced with new spec steel dowels, which
> are now
> > available from LR parts.
> >
> >
> > CAUTION
> > TD5's prior to the above VIN ranges must not under any
> circumstances, be
> > fitted with the new steel dowels.
> > If steel dowels are fitted to earlier engines cylinder head
> cracking may
> > result!
> >
> > LVB000240 HEAD GASKET 2 HOLES 1.20 mm x 1
> > LVB000250 HEAD GASKET 1 HOLE 1.27mm x 1
> > LVB000260 HEAD GASKET 3 HOLES 1.35mm x 1
> > ERR5384 BOLT CYLINDER HEAD x 12
> > YLL500040 STEEL DOWEL x 2

Originally Posted by loanrangie

If they werent broken then there really isnt any need to, once the head is on and torqued down they are superfluos anyway.

URmmm yes there is... the dowels soften with heat and distort somewhat.. which means you can have head/block/gasket alignment issues. but your right in that once the head is torqued down they are superfluos.


If youve cooked a TD5 youve got to replace them.... (and as the book says if your doing a head job you should replace them with the steel ones if they are in the VIN range)