torque specs

[troy]

does anyone have the torque specs for cylinder heads and connecting rods for a 2000 4.0 litre disco motor .... troy

[PaavScan]

Hi
from Rave manual page 12-2 -15

You can down load the manual here:

http://www.landroverresource.com/

Refit
1. Clean mating faces of cylinder block and head
using suitable gasket removal spray and a
plastic scraper, ensure that bolt holes in block
are clean and dry. Clean mating faces of
cylinder head and exhaust manifold.
CAUTION: Do not use a metal scraper or
machined surfaces may be damaged.
2. Check head and block faces for warping and
pitting. If out of specification, renew head.
3. Fit cylinder head gasket with the word 'TOP'
uppermost.
CAUTION: Gaskets must be fitted dry.
4. Carefully fit cylinder head and locate on
dowels.
5. Lightly lubricate new cylinder head bolt threads
with clean engine oil.
7. Models with SAI: Fit new air injection adapters
and tighten to 33 Nm (24 lbf.ft).

6. Noting that bolts 1, 3 and 5 are longer than the
remainder, fit cylinder head bolts and tighten in
the sequence shown to 20 Nm (15 lbf.ft) then
90 , and finally a further 90 .
CAUTION: Do not tighten bolts 180 in one
operation.

from torque setting section:

TORQUE DESCRIPTION METRIC IMPERIAL

Cylinder head bolts tighten, to 15lbf.ft 20 Nm.
then 90,degrees then a further 90 degrees.

**CAUTION: Do not tighten bolts 180 in one
operation.**

bolt tighting sequence

9 3 1 5 7
8 6 2 4 10

New bolt is highly recommended

[DaveB]

Just a heads up from a discussion I had with a Land Rover technician a few years back... Add 10-15 lbs to initial torque before starting your two 90° tightenings. In his experience the factory tightening was not enough to keep it from leaking.

Dave