Is The Volvo B8444S The Most Reliable Euro V8 Engine? This Is "Bad" But How Did It Fail?

A Volvo V8? Well actually, a Yamaha V8, In a Volvo. Can they fail though? Well this one is purportedly bad, so today we are going to tear the whole thing down to try to find out how. This is the Volvo B8444S 4.4L V8 from a Volvo XC90 or S80. These are remarkably reliable engines and I've had MANY people ask to see one on the channel. It has taken YEARS to find a bad example to teardown. So, what happened? how did this engine fail?

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Every week I post a new teardown video of a blown up or suspected bad engine. Check out a few of my favorites!
Mercedes M278 Bi-Turbo V8 Teardown    • Mercedes ML550 M278 Bi-Turbo V8 Engine Tea...  
BMW N63 Hot-V Twin Turbo V8 Teardown.    • Yet ANOTHER BMW N63 Engine Failure Mode! W...  
How to Ruin a Toyota 3UZ-FE    • DESTROYED Lexus SC430 3UZ-FE 4.3L V8 Engin...  

Why am I doing this? My name is Eric and I own and run Importapart, a full service auto dismantling business. Part of our model includes buying blown up and bad engines to dismantle for parts. We salvage the good, sellable parts and recycle rest. No, we don't rebuild engines but we do sell parts to people who do!

As always I hope you enjoyed this video. I love all of the comments, feedback and even the criticism. Catch you on the next one!

-Eric


00:00 Intro
02:51 Removing the coils and inspecting the spark plugs
03:47 Cracking the hex cap screws loose that hold the upper planum on
06:16 Unbolting the power steering pump
06:35 Starting to remove the lower intake manifold and fuel rail. This is just a little over complicated
08:37 Uncliping the injectors
10:35 FINALLY getting somewhere with this intake
11:56 A peek down the intake ports. Clean but dirty?
12:38 Unbolting the RH Valve cover. Gee an oil change every so often wouldn't kill ya would it?
13:41 Removing the LH valve cover, same story, same varnish
14:20 Time to remove the water pump which is....was... good.
14:53 Clearing the timing cover
15:11 Removing the harmonic balancer
15:53 Unbolting the intake manifold and removing it...nothing terrible here!
17:21 Peeling the timing components off of the engine
20:12 Cramming the cam cramps loose on the LH cylinder head
21:01 Removing the camshafts and inspecting the valvetrain
22:11 Cracking the excessively tight cylinder head bolts loose
22:58 Yanking the head, ohhhh I SEE
24:48 SCIENCE 1.0
25:01 Removing the cams caps, cams and inspecting valvetrain on the RH side of the engine
27:05 Cracking the head bolts loose on the RH bank. SO TIGHT
27:40 OFF WITH ITS HEAD again.
29:02 SCIENCE 1.1 and 3.0!
30:33 Unbolting the lower oil pan. SHMOO, but normal?
33:20 Removing the upper oil pan
34:17 Pulling the oil pickup, windage tray and oil pump with an attempt to disassemble the pump
37:14 Time to remove the bed plate
38:48 Cracking the rod cap bolts loose and plucking the crankshaft out of the engine
39:50 Pushing the rods and pistons out of the block
40:39 Complete rotating assembly inspection. Rings, bearings, pistons, bores, crank
44:08 Summary