New (to me) 2007 V50, 2.5 T5... need engine advice

rockfosgte · Post by **rockfosgte** » 02 Jun 2018, 19:39

Hello,

Brand new to the forum and to Volvos... bought a 2007 V50 with a 2.5 T5 and 6-speed manual gearbox at an auction today. Beautiful black w/ black interior, and 160k miles. Trouble is that it was bought sight-unseen and was greeted to an engine tick/knock, bluish smoke in the exhaust, and a check-engine light when we picked it up.

Some research reveals that I confirmed the engine to be a B2524T, evidenced by the VIN 6th and 7th digits being "68", and the stamp on the head and the decal on the hood/bonnet. According to a couple sites (this one for example), that engine is used in many Volvo models. But it seems there's variants of the B5254T... notably a B5254T2, B5254T3, B5254T4 and B5254T7 with wildly different power and torque specs. Neither the stamp on the head or the decal reflects which of these variants are installed. To add to the confusion, it seems that this engine in one variant or another was installed in the Ford Focus?

So, here's my question; should I... 1( pull what's there and try to rebuild/machine to repair, 2) source a direct replacement from a 2005-2007 V50 or S40, or 3) can I source any of the -3, -4 or -7 variants from other models for replacement? That S60R B5254T4 variant puts out 300HP?!?

Thanks a bunch for the replies, and looking forward to more forum posts!

V/r,
John

rockfosgte · Post by **rockfosgte** » 02 Jun 2018, 20:33

Some pics... bought for $1600, before we knew about the engine noise.

Post by **RickHaleParker** » 02 Jun 2018, 21:14

Before swamping engines at least get a Mechanic's stethoscope and find out where the tick/knock is coming from. I might be a simple fix.

Blue smoke could be worn valve guide seals which can create a tick, turbocharger issues which can create a tick or a knock.

"Neither the stamp on the head or the decal reflects which of these variants are installed."

Before one can figure out how to get where one wants to be, one must first know where one is.

The engine ID is not on the head, it is on the block.

Standing on the passenger side. It on the left side right behind the timing belt cover.

If your is turbo charged the engine should be B5254T3. If it is not turbocharged the engine should be B5244S3 or B5244S7.

B = Bensin (Swedish for Petrol)
5 = Number of cylinders
25 = Displacement in decaliters.
4 = Valves per cylinder
T = Turbo
2 = Second revision of B5254T.

rockfosgte · Post by **rockfosgte** » 02 Jun 2018, 23:46

Awesome... Thank You for the response!

I removed the timing belt cover and looked at the area you mentioned... apparently I need to remove more to see. The only thing I was able to see was the stamp on the head, but will look again & further in the morning.