The Bentley 6.75 litre turbocharged engine is a thing of beauty.

if you dont believe me, check out http://gallery.me.com/jonhoneyball#100164&sel=50 which is the interior of my Bentley RT engine during the operation required to change the head gaskets wot I had blown.

The bill was a cracker:


 
23 December  2008                                                                 Invoice No. 001680
 
Jonathon Honeyball

Re: Bentley Turbo  RT – Reg. No R667 OGN – Chassis No VCH 66140 - @ 65,613   miles.
 
 
To invoice for:
 
Vehicle delivered by transporter. Assess engine for potential head gasket failure.  Misfire noted cold. Engine run up to normal temperature. As soon as the cooling system pressurised, significant steam was noted from the exhaust.  Confirmed head gasket failure.
 
Engine dismantled to replace cylinder head gaskets. All components washed and cleaned in solvent and blown dry with compressed air. Engine washed down to remove significant dirt and oil deposits.
 
Engine reassembled with new head gaskets as required.  (See photographs)
 
Additional work carried out.
 
1. Brake pumps shroud seals disturbed on head gasket replacement. Shroud seals removed and new seals fitted.
 
2. Top of engine found to be extremely oily and dirty. Engine washed down with solvent cleaner prior to engine head assembly.
 
3. B bank air injection pipe broke on removal due to severely corroded union. Replacement pipe fitted.
 
4. Cylinder heads fly-cut to ensure they were totally flat prior to engine assembly.  Cylinder block and cylinder heads wiped down with solvent cleaner to ensure there were no greasy marks prior to the installation of the new gaskets and fitting of the cylinder heads.
 
5. Thermostat inspected and joggle valve found to be missing. New thermostat supplied and fitted.
 
6. New engine coolant temperature senders fitted for the dashboard gauge and the engine ECU coolant temperature sensors.
 
7. Front of engine volute casing dismantled. Water gallery O rings , sausage seal and gasket discarded. New top gasket fitted. New volute casing O rings installed, new sausage seal installed with additional sealant to the corner joints.
 
8. Exhaust system turbo charger waste gate vacuum cover removed as part of the overall job. On removal of the pipe banjo union, the thread in the cover came out on the banjo union. New replacement waste gate cover fitted as required. New wills ring installed when the A bank exhaust manifold was refitted.
 
9. During head gasket replacement, the pistons and cylinder heads were de-carboned.
 
10. Corrosion noted to the cylinder heads injector port orifices. Injector port orifices cleaned. Injectors cleaned prior to refitting.
 
11. New PAS reservoir feed to pump and return hoses fitted during engine reassembly.
 
12. All new engine driven V belts fitted during engine assembly.
 
13. Hydraulic systems bled including brakes to expel air after assembly.
 
Engine commissioned with new coolant and inhibitor. Cooling system pressure bled to ensure full circulation including separate charge cooling circuit.  Vehicle road tested and returned to workshop of inspection. All levels checked. Engine checked for oil and coolant tightness. Engine covers refitted.
 
 
Vehicle road tested and returned to workshop for re-inspection.  Valet carried out. HMSL removed to clean glass.
 



(click to see the gory details)

However, you might be interested in this:

http://events.imeche.org/EventView.aspx?EventID=446

Head of Bentley engineering giving a lecture on the V8 at the Institute of Mech Engineers.

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