20 X Cylinder head bolts - originally, Jaguar made it compulsory to replace them every time (one use only); at some later point, Jaguar agreed that the bolts could be reused but only one time (probably because of many enquiries at that time as the bolts were quite expensive so x 20 was a lot of money). Now they are rather cheap, and it is an SC engine so definitely yes.

 

Thanks everyone for your comments - much appreciated.

@Addicted2boost I'm not sure about the timing cover bolts - all these items were recommended by a trusted mechanic. The heads are due back from the machine shop today and then she'll be put back together!

With her recently reconditioned transmission and all this work done she'll run like a dream :-)

...I'll let you all know how it goes!

 

Hey everyone,

I'm really crap at following up on my posts after I've asked for advice - so while it's late, I thought I'd update this

In total it has cost me half the market value (here in Australia) of my XJR to have the engine work done - but, as you can see, there was a lot more done while my mechanic had everything ripped apart.

Along with her new (reconditioned) auto transmission she's purring as she should do - and such a pleasure to drive.

In addition to the parts above, below are the additional parts required and a breakdown of labour tasks.

Parts

• Cylinder heads service
• Supercharger oil (required two bottles)
• Nuts bolts
• Hose clips
• Timing chain guides pull side
• Timing chain guides tensioner side

Labour

• Remove bonnet and store
• Remove coil packs and spark plugs
• Pressure test cooling system water in Cylinder 3 bank 1
• Remove fan cowling and drive belts and pulleys
• Remove various charge cooler hoses and cylinder head bridge housing
• Remove air cleaner and ducting
• Remove throttle body, EGR pipe and unit and lower elbow for air intake
• Remove bypass valve and then supercharger
• Remove charge coolers / upper inlet manifolds
• Remove injector and lower inlet manifolds
• Remove remove valve covers
• Fit camshaft and crank shaft locking tools
• Remove harmonic balancer and timing cover
• Remove timing chains, guides and tensioners
• Remove camshafts from both heads
• Remove exhaust down pipe / catalytic converter studs
• Remove 24 cylinder head bolts (SUPER TIGHT)
• Remove heads
• Clean block deck face and check deck faces for trueness all ok
• Clean all parts ready for re-assembly
• Fit new knock sensor and valley heater hoses and connector
• Clean all cylinder head bolt block threads
• Clean all exhaust down pipe threads and fit new studs
• Final clean of engine block surface and fit new head gaskets
• Check over tappets on cylinder heads prior to fitting all in spec
• Remove cams to refit cylinder heads
• Fit exhaust manifolds with new gaskets and torque
• down bolts in sequence
• Gap and fit spark plugs to heads
• Fit cylinder heads to block and torque down as per spec and sequence
• Refit and time cams. Connect exhaust manifolds to cats
• Fit new secondary and primary timing chains and secondary tensioners
• and set tension on pull side of chains as per spec with new chain guides
• Refit timing cover with new seals and gasket, torque to spec
• Fit harmonic balancer and torque to spec
• Refit camshaft covers with new seals / gaskets and torque to spec.\
• Fit coils and covers
• Refit and seal up water pump
• Fit lower and upper inlet manifolds with new gaskets
• Fit coolant bypass pipe and new hose
• Fit supercharger and throttle duct fit EGR valve and pipe
• Fit new high pressure crankcase breather hose
• Fit throttle body and various other components removed
• Fit coolant cross pipe with new seals
• Fit drive belt pulleys and tensioners with new drive belts
• Refit cooling fans and connect hoses to radiator and super
• charger charge coolers
• Drain engine oil and replace oil filter
• Fill with correct grade oil
• Refit air filter box and replace air filter
• Refit coolant filler tank fill and bleed cooling system with correct
• coolant and mix
• Start engine and road test
• Check for fault codes through OBD2 port found mis fire codes
• cylinder 3 bank 1 logged due to blown head gasket
• Cleared codes road test and re scan no faults logged

 

That's going to be mega expensive and a lot of those parts don't need to be changed as others have noted.

 

The work has all been done!

I should note that when I had the tensioners done originally, it appears that not everything was replaced (I'd need to refer to my invoice to provide more information).