Thread: D1 V8 economy run.

Originally Posted by tempestv8

My DII in stock form would probably return around 16 litres per 100 kms on the highway, driving the Hume Highway. You are not just getting good economy there, but I believe you are getting *exceptional* economy - was there a tail wind helping you, seriously?

before my maf drama I would get 14L per 100 highway pretty consistantly.

Hey Ron that sounds pretty damn good to me. I have a snorkle and 2 5/8 free flow exhaust, I was getting around that BUT then it dropped to about 18 on the highway and about 20 - 25 around town I have done every thing I can think of and a couple of mates who are mechanics have had a look at it and they cant get it any better than I have it now.

But my engine is getting tired now so I have put it down to the worn engine as the reason why it isnt any better.

Blythe

Originally Posted by blitz

Hey Ron that sounds pretty damn good to me. I have a snorkle and 2 5/8 free flow exhaust, I was getting around that BUT then it dropped to about 18 on the highway and about 20 - 25 around town I have done every thing I can think of and a couple of mates who are mechanics have had a look at it and they cant get it any better than I have it now.

But my engine is getting tired now so I have put it down to the worn engine as the reason why it isnt any better.

Blythe

Blythe,

Mine has done 112,000km
I'm hoping it will last a fair bit longer.
Next mod will be an efficient ECU and dyno tune.
I think that may help with the power stakes

If yours is getting tired, now is a good time to turn it into a 5 litre powerhouse!

Cheers

I finally had to conceed defeat and take it in to the mechanics compression is now down to 90 psi per cylinder so she has had it I think. will now start looking around to see what the easiest and cheapest options are, but I will probably look for a 4.6 to slot in to her.

Mine has done 240,000km all of them pretty hard so she deserves a better donk in her.

I have a 4.6 in my D1 with extractors, 2.5 inch exhaust, snorkel and all the other bolt on bits and regularily do 18 - 19 ltrs per 100 (5 - 5.5 k's per ltr) towing the camper on the highway. What's even better is that is on gas. whoot!

For some strange reason I never measure the economy without the camper en tow. Probably cause it always includes a fair bit of off road work and we all know what that does to our economy so I think I'd rather bury me head in the sand to those figures.

[quote=trobbo;774783]I have a 4.6 in my D1 with extractors, 2.5 inch exhaust, snorkel and all the other bolt on bits and regularily do 18 - 19 ltrs per 100 (5 - 5.5 k's per ltr) towing the camper on the highway. What's even better is that is on gas. whoot!

Not wanting to steal this post so hopefully just a quick side step. Do you have the coils or a dizzy fitted to your 4.6?

Blythe

it's a 4.6 block with all the 3.9 ancillaries. Makes for an easy upgrade. Therefore still running a distributor.

good luck finding a 4.6 block at a reasonable price. They are getting rare these days