Thread: To fit a 4.6 or LPG to a D2a?

Hardly any difference between the 4.0 and 4.6

4.6's are still pretty gutless IMO

Id just give the 4.0 a top end fresh up..cam..port

Would be looking at lots of money for a 4.6

LPG has a lower calorific value and as such will always produce less (not more) power than petrol. About 10-20% less power and a similar increase in fuel consumption. Tuning specifically for LPG running will reduce this difference.

So LPG will not increase engine power.

However I always thought that the 3.9/4.0 V8 versions has more than adequate power so maybe your car needs a good going over.

Garry

Hey Camo,

The mob at SA that sell these recoed engines are claiming quite a lot more power then a standard 4.6. They have a decent cam fitted, flanged liners etc and the claimed 250 hp and the torque they say they develop is even more then a 4.4 Jag engine that comes in a D3 which is no slug.

These motors are available for $4950 from memory which isn't an arm and a leg if it makes the old girl go well.

If I did this then I'd fit the 4.0 in place of the aging 3.9 in my D1. Before I fitted it I'd get a decent cam fitted to it to liven it up some first. :-)



Hi Garrycol,

As I said it goes about the same as other 4.0 that I've driven, so it is about average in power output. I drove my wifes SsangYong Rexton diesel yesterday to Sydney and back and to frank it makes either of my V8 Disco's or anyother V8 Disco I driven feel very average. Call it a dick thing but I struggle with this fact.

AND before a Diesel Disco owner jumps in and says anything no I'm not interested in another rattly oil burner.


Cheers,
Terry

I would be very careful converting the D2 to LPG. Do a bit I research and maybe speak with Ritters in Melbourne. There is a lot of problems around converting the Rover V8 to sequential gas. It is causing a lot of slipped liners due to the inablity of the solenoids to stay in tune. I know of 3 people with slipped liners on the 4.0 and apparently there is a lot more.
I agree with others that the 4.6 is not much different to the 4.0. I think the 4.0 is probably the superior motor.

I looked at installing a supercharger to my D2 but it really doesn't fit.

I l

The same mob do a 4.9 stroker kit,,
they tell me around 25% increase in torque,,

anything over 2600rpm and they get along quite nicely,,
seem to like sitting on 3,,

Does anyone know if there is a website member within a 4 hour drive of Goulburn that has a D2 with one of these reconditioned and modified 4.6's fitted?

Or even one of the 4.9's that Pedro speaks about?

Cheers,
Terry

If you really want power then just whack in Gen4 6.0l into the Disco, I think Marks Adaptors make an adaptor for it and they are probably cheaper than a 4.6.

Last year at Robe I had a drag down the beach. I was in the diesel Pajero and he was in. D2 with 4.6 conversion. The diesel Paj easily out raced him to 100km/h.

Thanks Walker for the idea but I've owned a 317 kilowatt Gen4 and that isn't what I'm looking for otherwise I'd have kept my Senator.

I'm only looking at trying to get a decent power increase and improve the drivability of the Disco, plus I like the idea of keeping the vehicle 100% Land Rover rather then a hybrid with a Yank engine in it.

I'd be prepared to look at fitting a Chev to the D1 but the D1 is more for off road use and while a reasonable power increase would be a good thing I don't think I need to triple the horsepower output for off road usage which is roughly what you would get by fitting a Gen4 6.0.

Now a 5.7 Chevy is a lovelly and very capable engine. But that's another story so back to trying to find out more info on these 4.6's.

Cheers,
Terry