Outer Limits 4x4 Board

My GQ 93 has a VE type diesel pump. What year did GQ start to introduce in-line pump? What is the advantage using In-line pump over VE type ?

By VE - do you mean rotary style?
If so - The inline is longer lasting and cam controlled so you can run higher pressures to the injectors, but they are way more $$$ to rebuild.
I run a rotary type on my Atoyot, which was quoted circa $700 changeover. The same thing on my old truck (inline) was @$2000 to rebuild.

Just depends on what you want to spend. Both are very reliable.

If you want more info - just ask - I share my house with a diesel mechanic from CAT. If he doesn't know about it...then... :o

Hi diesel4play !
Thanks for your info regarding the price difference on rebuild. Yes, VE is rotatry type
But i got some info from another forum said VE is "smaller, more precise metering, quieter and lubrication and cooling is via the fuel itself".
If it true?


As far as I concern, I just want to know which one is more reliable for a 4wd, VE or inline ?

They are both reliable. All diesel fuel injection pumps need clean fuel, any water or crud and the will both fuck up. The internals run extremely close tolerances, on both types and any scores or marks damage them.

Why do you want to change from a rotarty to an inline? The engine and pump were designed to work together, nissan doesnt spend millions developing these things for no reason!

I agree with Mick, keep whatever they designed the engine for stock.
Inlines will take roughly 2 tablespoons of water b4 they break/die, whereas a rotary will die after 1/4 teaspoon of h2o.

The Inlines are far more reliable as they run a close tolerance cam and have greater control available, but the rotary is just a less fiddly option.

Both are tunable and if you want to keep the reliability - setup a twin fuel filtration system so you NEVER get water into the pump.

This will ultimately provide relaibility.

With Clean, air, oil and fuel a diesel will go forever.