TornadoRed
Top Post Dawg
- Joined
- Aug 3, 2003
- Location
- Saint Paul (ex-San Diego)
- TDI
- 2003 Golf GL 5-spd, red; 2003 Golf GLS 5-spd, indigo blue (SOLD); 2003 Jetta TDI wagon, Candy White (SOLD); 2003 Jetta TDI wagon, silver; 2003 Jetta TDI wagon, indigo blue
If you go back to the top post, here is what Drivbiwire wrote:
"Redline is defined as the maximum rpm allowed by the engine, in the case of all TDI's it is 5,100 rpm. The maximum physical limit of a TDI engine due in part to it's short stroke is approximately 8,800 rpm (this is when you will throw a rod or damage a piston, this rpm is not possible unless you force a downshift into 1st gear while driving 80mph)
The instrument cluster shows a red BAND starting at or around 4600 rpm, most owners will find that very little power resides beyond this point due mostly to the ECU reducing fueling to respect the smoke map."
He also wrote: "avoid steady rpms and avoid the use of cruise control. occasional application of full throttle (100%) is recomended to help seat the rings." He never said to accelerate to redline, or to cruise with the engine at redline, but instead recommended shift points which were 50% of redline when the engine is cold and 60% when warm.
As I recall, when my Golf had the stock engine tune the power dropped off sharply around 4200-4400 rpm -- it was totally gutless. The dyno printouts I've seen all show a similar shape to the power curve for newer TDIs, unless or until they receive a custom engine tune. So I don't think any new TDI owners will be revving to 5000 rpm during the breaking-in process, even if they want to.
"Redline is defined as the maximum rpm allowed by the engine, in the case of all TDI's it is 5,100 rpm. The maximum physical limit of a TDI engine due in part to it's short stroke is approximately 8,800 rpm (this is when you will throw a rod or damage a piston, this rpm is not possible unless you force a downshift into 1st gear while driving 80mph)
The instrument cluster shows a red BAND starting at or around 4600 rpm, most owners will find that very little power resides beyond this point due mostly to the ECU reducing fueling to respect the smoke map."
He also wrote: "avoid steady rpms and avoid the use of cruise control. occasional application of full throttle (100%) is recomended to help seat the rings." He never said to accelerate to redline, or to cruise with the engine at redline, but instead recommended shift points which were 50% of redline when the engine is cold and 60% when warm.
As I recall, when my Golf had the stock engine tune the power dropped off sharply around 4200-4400 rpm -- it was totally gutless. The dyno printouts I've seen all show a similar shape to the power curve for newer TDIs, unless or until they receive a custom engine tune. So I don't think any new TDI owners will be revving to 5000 rpm during the breaking-in process, even if they want to.