The 1.9TDi engine was designed for electronic control of the fuel pump which maximises the economy, power output and smooth running of the engine. Using a standard mechanical IDI pump, it won’t run efficiently as the injection pressures are too-low and the engine may suffer from fuelling and boost problems.
WE CAN UNDERTAKE ENGINE CONVERSIONS AS WELL AS BRAKE UPGRADES. WE REGULARLY INSTALL 1.9 TDI AFN CONVERSIONS USING ULTIMATE ENGINEERING COMPONENTS. FROM £6,950.00 FULLY INSTALLED. GOLF GTI 2.0 (AGG) ENGINES. FROM £4,500.00 FULLY INSTALLED. VW / AUDI 2.5 V6 TDI (MID MOUNTED) TIPTRONIC TRANSMISSION. ONE OF OUR OWN PROJECT VEHICLES.
The BEW valves are .5mm shorter for both Exhaust and Intake, compared to virtually all other PD cylinder heads, where valves project. The seats on the BEW appear to simply be cut deeper, recessing about .5mm. All others I am aware of, there are valve pockets in the pistons and valves project.
Re: 1.9l n/a industrial engine/motor. « Reply #6 on: May 20, 2010, 12:05:12 pm ». There is no such thing as NA AAZ. 1,9 NA engines have indeed longer (150mm) rods than turbo engines (144mm) Pistons are same 6mm shorter. All 1,9 diesels have oil squirters and stroke is same. Some later NA's have same crank as TDI. Logged.
One of the most common issues are related to the TDI 2.5 engine. Considering that I almost nothing about engines, my general understanding is that a TDI 2.0 is the most reliable one, followed by 1.9 and finally 2.5. However, I'm very confused by the whole matter, and I would like to know what you think on the topic.
The water pump is a weak point and is often changed with the timing belt to avoid problems. If the water pump seizes it can strip teeth off the timing belt. If the teeth strip the camshaft will get out of synchronisation with the crankshaft and the pistons and valves will meet!! However. The engine is designed with a deliberately weak rocker
When this problem became all too apparent, VW and Associates were likely in the middle of developing the new TDI engine, this used the same block and crank as the 1.9 TD, but different heads and pistons. The engineers looked at this marginal integrated key, and the quarter moon spline on the crank nose and decided to move on to a new sprocket
I think it's to do with the 1 bar atmospheric, you need to add that in the mix so the sensor needs to be capable. Safe max is about 21.5psi for the VA which is about 1.5bar so add the atmospheric and you're at the 2.5 but the 2.5 can actually read higher than 2.5 so it works.
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From a VW engine tuning site: "The 1.9 TDi was used in a wide variety of cars from the VAG group and came in different power levels. All had BOSCH injectors, and Bosch ECU's which are really sturdy and very protective of the engine.
I have a 1996 passat B4 with 1z TDI engine. A few days ago, it started smoking very heavily. Big clouds of white smoke (unburned diesel) come out of therjwySz.