pump building

[johnny]

Yesterday I thought everything over once again, we were afraid that the remaining pressure in the injectorlines would be to high and that it could result in dripping injectors. But the opening pressure is the same as the closing pressure on the injectors so that could not lead to any problems.

The next thing I'm a little afraid of is the duration of injecting with the higher lift of the camplate. The way I see it is the bigger plunger is just delivers more feul but the higher lift of the camplate increases the duration of injecting. What is the right pumptiming with this setup ?

Please correct me if I'm wrong, the more brains working on this project the better.

[935racer]

That depends on the style of camplate you use, some have more duration than others. if oyu are runnign a 1.6 pump put a 10 or 11mm head assembly in with a 1.9td camplate, use the heaviest return springs you can find to help reduce the rollers from skipping on the cam plate.

[DA-BRT]

I'm working with Johnny on the pump for his 1.6TD.

I've managed to get a rebuild pump from a 1.9 IDI (AAZ) Last sunday evening I took out the camplate.

Now I got the camplates from a 1.6TD IDI, 1.9TD IDI and 1.9TDI.  I already saw  that the TDI is the only one with an A-Symmetrical Cam. And it looks like the lift is bigger on the 1.9TD camplate than on the 1.6TD one.

When I'm back from my work (this thursday)  I'm going to measure them.

I'm going to check the following:
- Cam position (timing
- Cam height
- Cam length