CommieGIR
Veteran Member
- Joined
- Feb 7, 2011
- Location
- Atlanta, GA
- TDI
- 1998 Jetta 1.9l TDI (2001 ALH motor), 1990 Audi 90 Quattro 2.4TD IDI, 1987 Audi 5000 Quattro 2.4TD IDI
Like most of my projects, this one was also conceived in madness.
I normally only build Audi Turbo gas motors but my true passion is TD/TDIs, and I still have my Mk3 TDI ALH from days of yore, but recently I picked up an Audi 5000 Quattro Avant for cheap, and decided I wanted to use it as a tow vehicle for our rally car.
So began the search for a suitable motor. I had initially settled on the 2.5l TDI from a EU C6, but prices were much too high, so I finally found a VW AAB 2.4D that comes in the Transporters/Audi 100s. As a bonus, these share the same bore/stroke as the 1.9l ALH/AHU/AAZ motors found more commonly within the US, and the AAB will accept the 2.5l TDI head, so a TDI converison down the road is completely possible.
For now, the plan is to Turbocharge (lightly) the 2.4D using 10vT Audi parts (they share the same manifold designs and block design). The engine is coming with a 5 cylinder Turbo Injection Pump as well.
This is an in progress, the down payment has been placed on the motor, and it'll ship from Canada sometime next week.
Of course, the question is how bad will the gas Quattro transmission be, and the answer is: Not that bad. Highway cruising at 80 is about 3000 RPMs on the gas motor, so the Diesel should happily cruise at 80 (goal is power, not speed), and right now the stock 10vT gas motor doesn't rev above 4000 RPMs so its been a good way to get a feel for the limits of what a diesel will do with the transmission. It won't be the fastest, but it'll do.
I normally only build Audi Turbo gas motors but my true passion is TD/TDIs, and I still have my Mk3 TDI ALH from days of yore, but recently I picked up an Audi 5000 Quattro Avant for cheap, and decided I wanted to use it as a tow vehicle for our rally car.
So began the search for a suitable motor. I had initially settled on the 2.5l TDI from a EU C6, but prices were much too high, so I finally found a VW AAB 2.4D that comes in the Transporters/Audi 100s. As a bonus, these share the same bore/stroke as the 1.9l ALH/AHU/AAZ motors found more commonly within the US, and the AAB will accept the 2.5l TDI head, so a TDI converison down the road is completely possible.
For now, the plan is to Turbocharge (lightly) the 2.4D using 10vT Audi parts (they share the same manifold designs and block design). The engine is coming with a 5 cylinder Turbo Injection Pump as well.
This is an in progress, the down payment has been placed on the motor, and it'll ship from Canada sometime next week.
Of course, the question is how bad will the gas Quattro transmission be, and the answer is: Not that bad. Highway cruising at 80 is about 3000 RPMs on the gas motor, so the Diesel should happily cruise at 80 (goal is power, not speed), and right now the stock 10vT gas motor doesn't rev above 4000 RPMs so its been a good way to get a feel for the limits of what a diesel will do with the transmission. It won't be the fastest, but it'll do.
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