After a long hard drive down through Germany and Holland the car developed a roughness at anything over 70mph. Had a ferry to catch so held her at 65/70 to get home. Found the problem. On the Thor engine there is an idle control valve with one of the pipes going into the plenum intake. Where it joined the plastic was broken causing a bad air leak. Compression test shows two adjacent cylinders (8 and ) down to approx 100psi (the rest are 150psi)
So its (RH if sitting in the car) head off. Its been about three years since I pulled a head of a P38 and that one was a GEMS engine. Have done several complete engine rebuilds on 3.9 Classic engines but its a while ago. A week is a while ago at my age!
Quick questions that would help me. All the top stuff inc plenum I have done recently to overhaul the injectors.
a) Will the cylinder head lift off with the exhaust manifold attached ? - would be really great if it would. Seem to remember I fitted the exhaust manifolds on Classic engines prior to dropping them in, this was a great time saver.
Intend to fit Composit gasket and OEM Bolts.
b) Anyone know a good place to buy a reconditioned head with rockers if possible.
Any tips welcome - Car is a 2000 year 4.6 Thor and my Rolls Royce engine project is still in the early stage so can't use that yet!
So its (RH if sitting in the car) head off. Its been about three years since I pulled a head of a P38 and that one was a GEMS engine. Have done several complete engine rebuilds on 3.9 Classic engines but its a while ago. A week is a while ago at my age!
Quick questions that would help me. All the top stuff inc plenum I have done recently to overhaul the injectors.
a) Will the cylinder head lift off with the exhaust manifold attached ? - would be really great if it would. Seem to remember I fitted the exhaust manifolds on Classic engines prior to dropping them in, this was a great time saver.
Intend to fit Composit gasket and OEM Bolts.
b) Anyone know a good place to buy a reconditioned head with rockers if possible.
Any tips welcome - Car is a 2000 year 4.6 Thor and my Rolls Royce engine project is still in the early stage so can't use that yet!
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