V8 Engine 3.5 3.9 4.2
ENGINE
48
OVERHAUL
Big-end bearings - refit
1. Fit new bearing shells to each connecting rod.
NOTE: Big-end bearings are available in
0.254 and 0.508 mm (0.01 and 0.02 in)
oversizes.
2. Lubricate bearing shells and crankshaft
journals with engine oil.
3. Pull connecting rods on to crankshaft journals
and remove plastic tubing from bolts - if fitted.
4. Fit new bearing shells to each big-end bearing
cap.
NOTE: If crankshaft has been reground,
ensure appropriate oversize bearing shells
are fitted.
5. Lubricate bearing shells and fit bearing caps
ensuring reference marks on connecting rods
and bearing caps are aligned.
NOTE: Rib on edge of bearing cap must
face towards front of engine on RH bank
of cylinders and towards rear on LH bank
of cylinders.
6. Fit bearing cap nuts/bolts and tighten to:
Nuts - 50 Nm (37 lbf.ft).
Bolts:
Stage 1 - 20 Nm (15 lbf.ft)
Stage 2 - Further 80
°
7. Check connecting rods move freely sideways
on crankshaft. Tightness indicates insufficient
bearing clearance or misaligned connecting
rod.
8. Check clearance between connecting rods on
each crankshaft journal.
Connecting rod clearance = 0.15 to 0.36 mm
(0.006 to 0.014 in).
9. Clean oil strainer.
Engines numbers without suffix B
10. Clean mating faces of strainer and cylinder
block.
11. Fit new gasket, dry.
12. Position oil strainer to stud.
13. Fit oil strainer, fit nut but do not tighten at this
stage.
NOTE: This will allow for correct
positioning of oil strainer when timing
cover is fitted.
CAUTION: Ensure nut is tightened to 22
Nm (16 lbf.ft) when oil pick-up pipe is fitted
to timing cover.
Engines numbers with suffix B
14. Clean mating faces on strainer and cylinder
block.
15. Fit new gasket to strainer, position strainer, fit
bolts and tighten to 10 Nm (7 lbf.ft).
16. Fit timing chain and gears.
