Thread: Mazda 2.5 TD in Rangie

You mean the old bounty motor?
It's indirect injection with a really really short power band. I think there are better options.

Originally Posted by LRFan

Has anybody build a Mazda 2.5 TD in a Range Rover classic? I see alot of guys use Isuzus, I can get a Mazda 2.5TD for halve the price than a 2.8 TD Isuzu. Torque is more or less the same.

Welcome, been to Knysna on my way along the garden route from Capetown to Durban, beautiful spot there. You will find a UK company will have adapters available for that motor along with pretty much every other small jap and euro diesel you can find, also try one of the UK LR forums.

If your talking about the WLT engine, don't waste your time. Frought with head problems and overall a pretty weak engine. Even in a B series ute, couldn't pull the skin off a rice custard. Putting it in a rangie you would end up more time in the garage than out and about with it.
These rate about as bad as the ZD30DDTi did in the Pootrols for reliability.

Cheers

Andrew

The problem with the WLT engine with heads cracking are the crap radiators Ford/Mazda use. if you get the regularly cleaned you dont get the problem. bent exhaust manifolds are common. They dont have alot of power and are heavy on fuel.

Originally Posted by woko

The problem with the WLT engine with heads cracking are the crap radiators Ford/Mazda use. if you get the regularly cleaned you dont get the problem. bent exhaust manifolds are common. They dont have alot of power and are heavy on fuel.

Nothing to do with the radiator, was an inherent casting fault that wasn't addressed until towards the end of the engines production. I used to carry a pallet of 80 odd heads brand new at a time in stock for those who wanted the genuine item and sold about 3-4 pallets a year. Ironically, an aftermarket option I sold actually addressed the casting issue and we never had one warranty or failure on them.
Still a rubbish engine though and nowhere near the output of similar engines. They still ran an inline injection pump!

Cheers

Andrew

So a 2.8 TD isuzu with intercooler will be a better option? What will the Nm torque be for this motor wiyh intercooler?

blocked radiators must cause cracks in that defective area . I worked for a Mazda dealer but also repaired lots of couriers. the Fords cracked heads more often. have been told by the radiator place they used that they had different radiators. We were getting them all removed and cleaned every 40000km. and didn't have head issues. Your right not a good option for RR

Originally Posted by LRFan

So a 2.8 TD isuzu with intercooler will be a better option? What will the Nm torque be for this motor wiyh intercooler?

The 2.8 litre 4JB1T is a good motor in that displacement range.

In stock tune their power and torque is not great. The figures I have for the 4JB1-TC used in Isuzu NHR trucks is; 67 kW at 3600 rpm and 196 Nm at 2000 rpm.

Simply adding an intercooler will not improve torque much, as stock boost pressure is quite low.

Intercooled, with higher boost pressure and fuel injection pump tweaked to increase the fuel rate, they can perform very well in a rangie.

Here is a web page that details a non-intercooled 4JB1-T conversion in a rangie

Another for an intercooled 4JB1-TC conversion in a Jeep