What internals are diffrent on a 1.5 pump and 1.6 pump?

[PAVW]

I found a 1.6 pump for sale locally for a good deal. I think I read you could use a 1.6 pump on a 1.5 but youll run into timing issues? Also what can I interchange between the pumps so I can hopefully get a good one going. I was hoping I could swap the manifold/piston assembly and maybe the vane pump as well. Or can I just use the 1.6 Pump?

[R.O.R-2.0]

I found a 1.6 pump for sale locally for a good deal. I think I read you could use a 1.6 pump on a 1.5 but youll run into timing issues? Also what can I interchange between the pumps so I can hopefully get a good one going. I was hoping I could swap the manifold/piston assembly and maybe the vane pump as well. Or can I just use the 1.6 Pump?

 the injectors on a 1.5 are different (originally 180bar, pretty much cant get them anymore) and thats what makes them more difficult to time. and its not even more difficult, you just need the proper spec. but like i say, it has to do with the injectors, not the pump.. pretty sure the pumps are identical internally.

[fatmobile]

The timing curve is different,
 so the timing advance spring is weaker.

[PAVW]

could i swap the springs?

[R.O.R-2.0]

The timing curve is different,
 so the timing advance spring is weaker.

your positive the 1.5 pumps have a different curve?

[Baron VonZeppelin]

could i swap the springs?

With the position you've been in on that thing lately ...

I'd just install the new pump as-is first, and get that lil bastard running again.

The weaker spring is a desired item for guys who do a lot of governor modding anyhow.

[PAVW]

Hahaha true. I really need to get it running but I want to make sure this pump will work. If we are talking a few mpg diffrence and a few hp diffrence then I think im going to jump on it.

[Baron VonZeppelin]

Thats about the only differences you'd face, at most.
If even any at all.

Lots of people have criss-crossed 1.5 and 1.6 Inj Pumps between the 2 different engines. Jump on it

Just verify the lengths of the delivery valves on this new item.
They need to be same length as the pre-existing, or else you will need to swap yours onto it.

[PAVW]

Delivery vanes? As in the vane pump in the front of the I/P?

[burn_your_money]

It should bolt up just the way it is without swapping any parts.

Personally I wouldn't worry about what the differences were when the pumps were new/calibrated. Both are likely very far out of calibration so timing curves etc may as well be adjusted with what you have. If you don't have the equipment to do it, then just swap the pump on and if it sounds ok and gets proper mileage, then play with it and see if you can get more

[Baron VonZeppelin]

Delivery vanes? As in the vane pump in the front of the I/P?

Noooo ....
The delivery valves are what your injection lines thread onto - on the back end of the pump.

If they are longer or shorter than your old ones - your injection lines won't fit back up right. If at all.

Put the bicht on the car and make it run already ! lol

[R.O.R-2.0]

Delivery vanes? As in the vane pump in the front of the I/P?

Noooo ....
The delivery valves are what your injection lines thread onto - on the back end of the pump.

If they are longer or shorter than your old ones - your injection lines won't fit back up right. If at all.

Put the bicht on the car and make it run already ! lol

i believe only the AAZ got longer DVs

[burn_your_money]

i believe only the AAZ got longer DVs

The 1.6 EcoDiesel also had longer deliver valves.

[R.O.R-2.0]

i believe only the AAZ got longer DVs

The 1.6 EcoDiesel also had longer deliver valves.

good to know..

[Wayland]

i believe only the AAZ got longer DVs

The 1.6 EcoDiesel also had longer deliver valves.

good to know..

I have a 91 NA pump that has slightly longer delivery valves on it. Not as long as ECO delivery valves, but longer than early '80's ones.