Hello, we need to replace the fuel injection pump on our 1985 2.5L Diesel Landrover 110. She is currently naturally aspirated, but I believe that her engine may have been fitted with a turbo originally. We are unsure whether to go for a N/A fuel injection pump or a turbo fuel injection pump. Is the difference between these to do with the amount of fuel delivered, or is it to do with the way that it mounts to the engine?

Many thanks from all us of working on Big Car.

Its to do with the IP putting in more fuel when the turbo blows, so there is a connection between the two. If it has no turbo, put a NA pump on.

Can you not get your old one rebuilt or did the water really knacker it?

Thanks for your help Discomania. We were quoted £300 for the repair of the old pump by the injection specialists that diagnosed its seizing up. I'm thinking we should be able to get one off a scrapper or a reconditioned one for less than that. Thanks again.

If you use an engine WITH turbo but with the N/A injection pump, you will get excellent economy and clean running.

The more air you stuff into a diesel engine the better it works.

The injection pump for turbo engines has a very obvious diaphragm capsule on it that finds out when the inlet manifold pressure is more than "naturally aspirated", and it throws in more fuel, and that burns with the extra air makes more power, and stuffs the economy.

CharlesY