fuel consumption RB 30 NISSAN PATROL

Submitted: Monday, Oct 28, 2002 at 01:00
ThreadID: 2230 Views:4032 Replies:7 FollowUps:7
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INTERESTED IN ANY FIGURES THAT MIGHT BE AVAILABLE ON THE 1990 NISSAN PATROL 3.0 LTR MOTOR RB30
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Reply By: rob - Monday, Oct 28, 2002 at 01:00

Monday, Oct 28, 2002 at 01:00
Check out the Yahoo patrol group http://groups.yahoo.com/group/Patrol4WD/
AnswerID: 7918

Follow Up By: Exploroz Team - David - Monday, Oct 28, 2002 at 01:00

Monday, Oct 28, 2002 at 01:00
Can we please start to put the answers in this forum and stop refering people to Yahoo constantly. Yahoo make plenty of money already and we need evey user that we have. If someone posted it at Yahoo then they should be able to post it on this site also. We have 70000 Australian 4WD readers per month so I am sure the data could be put on this site also.David
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FollowupID: 3671

Reply By: Rob - Monday, Oct 28, 2002 at 01:00

Monday, Oct 28, 2002 at 01:00
Surely he has more of a chance getting a collective answer with 500 members in the patrol group.

What is wrong with yahoo groups????????????????? They are just ordinary people like you who have an interest in a particular vehicle etc getting together through the internet to chat about the thing they like most.

AnswerID: 7941

Reply By: Member - David - Monday, Oct 28, 2002 at 01:00

Monday, Oct 28, 2002 at 01:00
I agree with David from explore Oz , he asked the question on this site , so why not let him get his answers from this site
Cheers Dave
AnswerID: 7959

Follow Up By: Rob - Tuesday, Oct 29, 2002 at 01:00

Tuesday, Oct 29, 2002 at 01:00
Sorry I didn't realise I was braking any rules here.

Maybe a header not to refere to any other groups/clubs should be put up so others know the rules too.

I thought I was doing the right thing & helping the guy out, but apparently not.

I appoligise to all concerned.
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FollowupID: 3738

Reply By: kezza - Monday, Oct 28, 2002 at 01:00

Monday, Oct 28, 2002 at 01:00
Ill post my info here this site is much easier to read and to get a reply.

Lets see Nissan RB30 with --
std 31" tyres you will average 15MPG - approx 18 lit/100km or about 5.3 km/litre (12.5 to 21mpg possible)
32" tyres - about 16 MPG - 17.3 lit/100km or 5.75km/litre(13- 24MPG possible)

Seems the RB30 revs a bit high at standard tyre sizes. AT 95-100kph on flat roads (ideal conditions) it can return 24 MPG but usually variety of conditions will pull that back th 19- 20 mpg

The donk is a bit underpowered at its max torque range approx 2200rpm it does very well with a set of extractors AND a free exhaust system should give at least 7% better economy if not 10%.
Responds very well to using premium unleaded and revving about 30% more than other motors.
This motor is a real NISSAN motor and as such is quite happy revving up to about 6000rpm.
At higher revs (3800-5600 rpm it has a powerband) the RB30 is a wolf in sheeps clothing literally will out perform many other 6 cylinder 4WDs simply because of its free high revving nature.

If you let it lug up hills and in the bush it can feel sluggish even runs out of steam in low second on steep hills - however it still has plenty of speed in low first cause it can rev high all day - If you could keep the fuel up to it- Most people wouldnt own one as it needs revs to really shine. Very few can bother DRIVING the vehicle to its potential (working it through the gears and hearing the motor rev) hence they have low resale value.

I quite like the RB30 because driven skillfully it will leave even GU4.2turbos and GQ 4.2 petrols struggling on steep slippery slopes - I exagetrate not - they are just harder work to get to perform.
Also gearboxes arn't quite as rugged as the 4.2s and lower geared.

Oh and yes Ive owned one and dont miss the change back to 3rd gear to get up some hills. Very rugged reliable and smooth motor.

Kezzzaaa

AnswerID: 7963

Follow Up By: Member - Nigel - Tuesday, Oct 29, 2002 at 01:00

Tuesday, Oct 29, 2002 at 01:00
I'll print this out to prove to the wife that I have to rev it up every now and then :)

Actually I was starting to think about an engine swap until I got the vacuum advance fixed in the dizzy. Now it's very nice to drive and more economical and I'll keep the engine until it dies of old age (265000 km and going strong with no major work done). I'd still like diesel economy for towing, but the savings wouldn't justify the price of a swap.

I'm running 32" tyres and extractors and 2.5" free flow exhaust.
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FollowupID: 3751

Reply By: wal - Tuesday, Oct 29, 2002 at 01:00

Tuesday, Oct 29, 2002 at 01:00
THANK.S VERY MUCH FOR ALL THE REPLIES,I APPEAR TO HAVE GOT 14.45 LTR PER 100KM TRAVELLING LIGHT AND 16.42 LTR PER 100KM WITH A 600KG JAYCO TRAILER BEHIND.IT APPEARS I'VE NOT GONE TO BAD FOR THIS MODEL,SPEEDS WERE TRAVELLED AROUND 90/100KPH.
REGARDS WAL
AnswerID: 7979

Reply By: Member - Nigel - Tuesday, Oct 29, 2002 at 01:00

Tuesday, Oct 29, 2002 at 01:00
Your figures aren't too bad, but get the vacuum advance and weights in your distributor checked.

I recently had my vacuum advance replaced (and a tune up to suit) and can stay in higher gears much longer now. It's almost like a different engine to drive - much smoother (therefore more economical).

My engine has done 265000 km and is running better now than the day I bought it (135000 km then).

I've also put extractors and a 2.5 inch exhaust system on and find that helps. I also find an octane booster like moreys or using Premium unleaded helps increase power and economy.

I haven't taken it on a decent run since I got the dizzy done up, but previously the best I got towing a 1 tonne campomatic from Cairns to Mackay was 14.5 litres per 100 km and that was sitting on 90-95 when there was no traffic to hold up. I have 235/85R16 tyres (32 inch).
AnswerID: 8007

Follow Up By: Kezza - Wednesday, Oct 30, 2002 at 01:00

Wednesday, Oct 30, 2002 at 01:00
seems once you go below 100kph on 32"tyres you get good economy out of the rb30 - thats great consumption for towing a trailer. I actually got my best figures while sporting a big roof rack - but I was taking it very easy.
kezza
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FollowupID: 3752

Follow Up By: Truckster - Wednesday, Oct 30, 2002 at 01:00

Wednesday, Oct 30, 2002 at 01:00
Kezza...
Remember changing the size of the tires changes the gearing.

On a Patrol, if it comes std with 31inch tires, and 4.1 gears,
if you go to 33's you should go to 4.3's to stay std ratios, 35's go to 4.6's to stay std. and 4.88s are around the lowest you will find in aust, but Iceland they have 5.4s! But some of their cars come out with 39's to 44's standard!

The diff ratio in on the compliance plate on GQ will be 3.9(usually only Autos), 4.1, or 4.3.
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FollowupID: 3757

Follow Up By: Kezza - Wednesday, Oct 30, 2002 at 01:00

Wednesday, Oct 30, 2002 at 01:00
Ha in Iceland they have to drive through all that slush when the volcanos go ballistic and melt the ice and it slushes all over the road.
I know! I think the 32" tyre actually is the best highway "gearing" for a RB30 as it allows better use of the lower gears, a bit hopeless in the bush cause of the diminished engine braking and pull up steep hills - unless you drive it like you hate it - but they seem to like that.
kez
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FollowupID: 3780

Follow Up By: Member - Nigel - Wednesday, Oct 30, 2002 at 01:00

Wednesday, Oct 30, 2002 at 01:00
Gotta agree about the gearing - 32" works very well on the highway, but I gotta go to low range more often then my diesel buring friends.
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FollowupID: 3781

Reply By: Member - Nigel - Wednesday, Oct 30, 2002 at 01:00

Wednesday, Oct 30, 2002 at 01:00
Worst figures was 26 litres per 100km while towing, doing 110km/h into a headwind between Cloncurry and Winton - I had 5 litres left in the tank when we got to Winton (this was before the extractors and free flow exhaust).

I once had a small hole in the inlet manifold gasket and that made it run like a dog.
AnswerID: 8012

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