lomomike:


You backed off from the W12 rear SWB bench type you wanted to buy. Instead you got a V8 4.2 Tdi

Not really, Mike. This is a stop-gap car. I am still looking out for a 2007 Audi A8 6.0 W12. It just has to be the righ spec.

Siena:
My diesel-engined Audi specification:

Make: Audi.
Model: A4 2.5 TDI Quattro.
Model year: 2000.
Engine capacity: 2,496cc.
Configuration: V6 2xDOHC 24V.
Fuel delivery: Direct Injection.
Power: 180hp.
Torque: 370Nm.
Kerb Weight: 1,355kgs.
Drive: Permanent AWD, Torque-Sensing Centre Differential.
Transmission: 6-Speed Manual.
Maximum speed: 138mph / 224kph.
0-60mph: 8.1secs.
Fuel Capacity: 62 Litres.
Fuel Consumption: 35.6mpg.

Make: Audi.
Model: A8 4.2 TDI Quattro.
Model year: 2007.
Engine capacity: 4,134cc.
Configuration: V8 2xDOHC 32V.
Fuel delivery: Common Rail.
Power: 322hp.
Torque: 650Nm.
Kerb Weight: 1,945kgs.
Drive: Permanent AWD, Electronic-Controlled Centre And Rear Differential.
Transmission: 6-Speed Tiptronic.
Maximum speed: 155mph / 251kph.
0-60mph: 5.6secs.
Fuel Capacity: 90 Litres.
Fuel Consumption: 31mpg.

kayoday:
Which Station in Nigeria sells the best diesel for suited for diesel engine?.
I drive a 1999 C200 CDI and the problem I encounter most is bad injector nozzle or the nozzle rail switch, was told it being caused by bad diesel.

Natty14:
oga Siena, i need to replace my vw T4 engine. It runs a 1.9tdi engine at the moment. Reason is that compression is low and d engine spills oil from all the orifices(dip stick, valve cover etc). Overheating is also a serious issue with the engine.

Now how can i convert this 1.9tdi to 2.5? the bus is used for commercials. It carries heavy loads to the uphill.
I need an info on what i can do now. still a novice.

Siena:


If oil is coming from the dipstick, that means the contents of the dump are being pressurised. Compression is blowing past the piston rings.

Are you thinking of replacing the 1.9 TDI inline 4 for a 2.5 petrol or diesel (both inline 5 engines)?

Natty14:
Yes, replacing 1.9tdi with 2.5 diesel. Is 1.9tdi okay for a commercial bus?

There's this term used by the engine dealers such as "half engine" or "half and top" ,. Which i understood to mean Engine minus Gearbox. Can i install a 2.5 diesel "half engine " on my 1.9tdi other half?

Siena:


A 1.9 TDI is a decent engine, being diesel, it has great pulling power, despite the small capacity. It's all about the torque it develops.

The 2.5 TDI 5 cylinder can be installed, but it involves a lot more than the obvious engine. Gearbox, driveshafts, wiring, ECU, exhaust, cooling system and a whole bunch of stuff will need to be replaced too, with no guarantees your mechanic will do a decent job. My advise would be to stick with the 1.9 TDI 4 cylinder engine.

Half engine refers to just the bottom end (engine minus the cylinder head). Since the condition of the linder head of your current engine is unknown, I would strongly recommend you go for a complete engine.

Good luck bro.

Natty14:



I ve always valued ur advice. i will stick with the 1.9tdi. How do i bargain for a good engine. I don't trust any mechanic here. when the dealers say"half and top" or half engine, the engine top is included, where as the geabox is removed. something like the engine block and the cylinder head... I av seen the engine, they aren't running or attached to any vehicle. Is there any hint on how to check a good engine for novice like me?

ivoryhouse:

Tdi is a class of diesel engines, dont know about the vw though
Suspended the project but will resume real soon
pictures..

Ladipodeal:
My nozzle in C200 CDI stuck and difficult to remove. Anybody with nozzle removal in Lagos?

Siena:


Do you mean the injectors are seized in the cylinder head?

Ladipodeal:


Yes sir.
Appears the Rings at the tip of injector bad so the number 2 injector brings smoke and car trips off and difficult to start.

dumo1:

A really nice looking TDI Defender. Mehn! those tires can go anywhere especially those Ogun state roads. I see a Jeep Commander in the background. How do you source for the parts and also keep it from the hands of Kazeems?

Natty14:
oga Siena, i need to replace my vw T4 engine. It runs a 1.9tdi engine at the moment. Reason is that compression is low and d engine spills oil from all the orifices(dip stick, valve cover etc). Overheating is also a serious issue with the engine.

Now how can i convert this 1.9tdi to 2.5? the bus is used for commercials. It carries heavy loads to the uphill.
I need an info on what i can do now. still a novice.

9icetoo:

you may need to replace the ccv to stop oil seeping out of your dipstick hole and valve cover gasket.
however if the overheating has damaged your engine,
you may then need to replace the engine.
someone I met (mentioned it here on nairaland) changed his volks golf TDI engine as a result of what you are complaining about (except overheating) when nothing was actually wrong with it.

Siena:


It's always easier to check an engine while it is still in the scrap vehicle, and it can be started.

If it's been removed, all you can check are the following:

External condition 1: A Diesel engine of that year will be fairly oily. If it's suspiciously clean, then it's most likely been steam cleaned or pressure washed prior to you seeing it. You need to wonder why.

External condition 2: Check carefully for any visible cracks, or signs of welding on the cast iron block or aluminium cylinder head. If you see anything you're not 100% happy with, trust your gut instinct, and walk away. For every bad one you come across, there are better ones to be had.

General health: Before purchasing a used engine which can't be tested in the donor vehicle, it is wise to establish if it's mechanically sound. Get the seller to bolt a starter motor to the engine, and then they can crank it over using a battery and jumper cables. This way, oil pressure can be checked, as well as the cylinder compression. Any decent mechanic should be able to organise this.

Warranty: Does the seller offer any sort of warranty? Anything between 1 and 3 months warranty on a used engine is fair. It is essential you get the engine fitted ASAP after purchase, so if there are any issues, you've got time to chase up the seller for a refund or exchange.

Best of luck!

Dexmars:
Please don't let the thread die....I want to buy a diesel engine ride too.

9icetoo:
Which make and model do you have in mind?