Main bearing and big ends

[ProjectChimaera]

Hi, can anyone help me out with some tightening torque settings for mains and big ends on my 4.0 Chimaera please?
Also any settings for the rubber sump gasket.
Many thanks
Adi

[Pupp]

ng to do with the rubber sump gasket is forget it, will dissolve or go brittle, or both, don't waste your time

[phazed]

Useful Rover V8 Information



Torque settings

1-4 Main bearing cap bolts - 55 lbft

Rear main bearing cap (5) - 70 lbft

Conrod cap nuts - 35 lbft

Long and medium cylinder head bolts - 70lbft (all heads)

Short cylinder head bolts - omit or 30lbft (except 10 bolt heads)

Rocker pedestal bolts - 25 lbft

Timing cover bolts - 25 lbft

Crankshaft pulley bolt - 150 lbft

Camshaft timing gear bolt - 45 lbft

Valley gasket clamp bolts - 10 lbft

Flywheel/drive plate bolts - 60 lbft

Clutch cover bolts - 35 lbft

Inlet manifold bolts - 30 lbft (Disclaimer: At least 1 person has pulled the thread out at this setting - although LR claim it should be at 38ft-lb - so YMMV)

Exhaust manifold bolts - 15 lbft

All 1/4" bolts - 8 lbft

All remaining 5/16" bolts - 20 lbft

[ProjectChimaera]

Brilliant, thanks, phazed do you have sump seal preference?

[caduceus]

Dirko-S

[phazed]

As above.

[N7GTX]

ProjectChimaera said:

Brilliant, thanks, phazed do you have sump seal preference?

Fiat's own as used on their sumps. The sumps corrode away before this stuff fails. Not cheap but excellent stuff. Any Fiat dealer will have it on the shelf.

[phazed]

Put on a thin sensible bead and lightly bolt up the sump. Leave it for a few hours and nip up.

[ProjectChimaera]

All done, actually used the Sealey equivalent and it seems very good. I had a recommendation from a repairer that used it on a troublesome Smart car sump. Time will tell but it may be a more reasonably priced alternative? I did leave it for a while before final tightening and it seemed to spread evenly without making a mess.
Thanks again for the tips.