Outer Limits 4x4 Board

i bet it could produce more torque at lower rpms with the right cams

are the rovers all aloy aswell?

This is another version of the same engine and sure sounds like low down grunt to me

The GX 470's double overhead-cam 4.7-liter V8 engine produces 235 horsepower and 320 lb.-ft. of torque (preliminary figures). Just as important, especially for customers who will want to use the new model's generous 6,500-lb. towing capacity (with optional tow package), the GX 470 V8 produces 80 percent of its peak torque -- or 256 lb.-ft. -- at just 1,100 rpm. The GX 470 also meets Low Emissions Vehicle (LEV) certification.

by contrast the rover V8

3528cc
Vehicles used on:
Defender (90" models, 1985 - )
Defender (110" models, 1983 - )
8-cylinder (V8) : 90.47 x 71.1mm 3528cc
compression ratio : 8.1:1
carburettor : 2 x Zenith-Stromberg
horsepower : 91bhp (net) at 3,500 rpm
maximum torque : 166 lb ft at 2,000 rpm

after all where the torque curve is can be changed by any good engine builder it is just that matter of balancing peak power and low down torque

by the way BJ the engines are still a toyota POS and I wouldnt own one on principal not poluting the Jeep with such crap :mad: :mad: :evil:

thanks aussie CJ

how about putting some of that in your pipe and smoking it sam?

anyways to add a bit of tech:

the motor you have put the specs up on is not quite the engine that is within affordable reach of us average joe schmoes

the engine is a lexus toyota V8, but has another 700cc's, it has a cast block (not alloy) and comes in the 4WD not in the little ricer, less cams, and a totally different build to pull those figures! BUT proved sam wrong none the less!

BUT the engine builder can do what he/she likes and make it FAR better! from either engines favour!

the 4.0L in standard trim reads as this:

1UZ-FE. Specs: 3968cc
EFI quad cam 32-valve V8. Power: 194kW @5400rpm. Torque: 353Nm @4600rpm.

OR for a more direct comparison of the rover numbers above:
Engine:
Four Cam 32 Valve V8, 4.0 Liter (1UZ-FE)
(Same engine as in LS400, but tuned to a more resonant sound) HP: 250 HP @ 5600 RPM
Torque: 260 FtLbs @ 4400 RPM
0-60mph: 6.9 seconds
1/4 mile: 15.3 seconds
Top Speed: 150 MPH
Coefficient of Drag: .31 with optional front spoiler, .32 without
Bore and stroke: 3.55 x 3.25
Compression ratio: 10:1
Oil Capacity: 4.76 quarts
Cooling System Capacity: 12 quarts
Transmission:
4 speed ECT-i (Normal and Power modes) automatic with overdrive Gear Ratios:
1st 2.804
2nd 1.531
3rd 1.000
4th .705
Reverse 2.393
Final Drive 3.916

Other:
Brakes: 11.6" front and 12" rear ventilated power assisted disks with ABS
ABS: 4 sensor anti-lock, 3 channel, 4 channel with traction control enabled
Fuel: 93 Octane unleaded
Tank Capacity: 20.6 gallons
EPA gas mileage ratings: City 18 MPG, Highway 23 MPG
Curb Weight: 3,575 lbs
Weight Distribution: 54.5% front, 45.5% rear
Wheelbase: 105.9 inches
Overall Length: 191.1 inches
Overall Width: 70.5 inches
Tire Size: 225/55 R16 V rated
Factory Tires: Unidirectional Goodyear Eagle GS-D or Bridgestone Potenza RE93

all information was stolen directly from the internet, raped and pillaged by me, through the use of google......google is your friend!!

for some fully siiik mate pics and rice and his platez are crooosn:
http://members.tripod.com/~joel_n_beth_ ... dsc400.htm

No doubt its got heaps of low down torque but a still bet that the thing wont run at less then 500rpm. Now this wont matter if you got 150:1 plus gearing or an auto but if you got a manual and less than 100:1 gearing having a motor that will lug down to less than 400rpm and not stall is a major benefit. The difference in a motor that will run at 600rpm to one that will run at 300rpm is like the difference between 50:1 gearing and 100:1 gearing in terms of wheel speed. A motor that runs at low revs makes up for a low of gearing.

I know a 4.5L pertol landcruiser doesent like to see less than 600rpm and it will throw in more fuel to keep the revs above this and lower than 500rpm they start to rattle and ping and knock. If you keep putting your foot on the brake and try to make them run much lower they just stall. I dont know if its the cam and heads etc that causes this or the fuel injection setup but they wont run at low revs.

Maybe I think this is of more benefit than others but with a rover motor you can put your foot on the brake to about 200-300rpm and they still run fine.

I had a slow race with tony (ruff) he was at 100:1 and I was at 50:1 in a stock rangie and I almost beat him (by going slower that is)

Sam

i found the best way to slow race something, is

say your car vs his, in a slow race

you both get out, and drive the other guys car, at full noise, to see which really is the slower :wink:

ALMOST beat him?

is that like ALMOST winning the lottery?

ALMOST is for web wheelers!!

But in terms of bang for buck I'd go the Rover. Cheap to buy and not complicated to work on. Good discussion and info nonetheless. I was thinking of dropping the Rover 3.5 into the Zook but I think I'll just use a Rangie as the base for the next project. Whenever that is...

youve barley begun the first :wink:

Sam you will find it is the injection system that will not allow the engine to run below 600 rpm. The main reason for this is that the engine must be doing more then 450 rpm for the ingition to cut in on crank. That is why most EFI's will not start if the battery is very low on power.
As soon as the crank angle sensor registers the engine doing more then 600 rpm ( this veries on diff makes ) the spark and fuel are turned on.

as NAM said, i think i would use the rover as it is simpler and cheaper. Parts are readily availiable for the rover as well.

Dont forget with the lexus to add in the cost of an aftermarket computer as well

POS i had a P76 4.4 in my old hilux and the kit was from castlemain
It cost me $1500 for the lot engine and all

Adrian if you are seriously interested in this i know where there is a complete conversion at the moment including engine.Not sure what they want for the motor but they only want $400 for the conversion kit.I got quoted $450 for a bellhousing on its own from Delow. But if you want to do it later down the track we will be making our own bellhousing adapter like Sam's and we can easily make another at the same time.

Two totaly different concepts,me no bucks love dinasaurs yes the rover,
and sam is right the carb design is what makes em work on angles ,I have my eyes on two cars for extra spares at the moment ,both running well and both priced under $700 probly score both for $1000 that will give me all told 3 motors and two autos and a menagery of carb /injection setups to choose from and play with.
P.s the motor is only 3.5 ltrs if you want you can play get the horse power just like any other motor stroke to 5ltrs blower injection cams by the mountian load all avialable , but hay what do you want to do 1/4 miles or crawl rocks ,You could probly get the injection to work at super low revs on the toy just need to feed the pute a dummy nock sensor signal or somthing,In my books 4xs and electronics don't mix,I wouldnt bother spending probly $2000 + for a motor then throwing it in the creek ,to get towed home,atleast dinasaurs can dry out and live to crawl another day.
Don't get me wrong if you have the bucks to buy these things you'll have the bucks for the super gearing and the rest to go with it and make it work , but i don't have the bucks to get towed home ! I have to wait and drive home

I have the P76 and went through the whole carb bullshit. The stromberg is a POS and should be ditched immediately. P76's are known for leaky inlet manifolds - this is aggravated by adaptors so I managed to get a guy to rebuild my original manifold to fit SU's for about the same price. Sam is right - those little suckers run on angles that carbs shouldn't I have photos of the rebuilt manifold if you wanna see them...

Couldn't be happier - plenty of power and it runs off road like a dream - no stalling yet and I have had her on some good angles

Well i should have a 3.5 (just have to get it up from melb) awesome value aswell.

The next thing is the adaptors, sounds like that one for $400.00 could be the go.

However nearly everything else on my rig is custom "BOOTIE FAB" so i suppose the adaptor should be no different.

Ruff when are you looking at making one of these?

Thanks guys for all your input

Whenever you are ready.

i was thinking the rover V8 also...

funnily enough, i know one of the guys that started delrows!!! not there anymore, but i might have to have a chat to him!!! hes a engineer d00d too..

my cars getting sold after xmas, so project hilux will be going again.

Our work ute has the P76 engine, they just a rover block (or same as) with different inlet manifold etc or somthing.. i dont think they much differant other than that, and capacity...

If you go rover, expect oil leaks!!!

The P76 block aint the rover block - its wider for the longer stroke - thats why the inlet manifold is wider. Most of the internals are the same except for the crank. Water pump cover is different but the 3.5 one can be adapted. Dissy is not interchangable. P76 is a lot taller - you need way more bonnet clearance for your carb/filter etc. flywheel + Starter different too...

P76 specific parts can be a pain to get hold of - 3.5 parts are like grains of sand......

damn, i must be going gay

this thread has lots of good tech, and for some reason im swaying towards a 3.5 rover motor (maybe my next rig will be a mardi gras float)

BUT
is the block alloy? or just the heads?

all alloy.
careful BJ pommy crap can be addictive.

they are a great engine, easy to work on, heaps parts available.

regards
Michael.

damnit im sold

looking for rover V8, rolling chassis

Hey cool. Someone's been converted.
I'll probably do the Rover 3.5 swap down the track too so please post all the info you have about mating it with a Toy box, especially costs (materials and labour).

mating it with a toy box

ROFL

I don't find that funny. So what if I said 'mating' and 'box' in the same sentence? Get your mind outta the gutter!

the difference between a 3.5 and 4.4 is not the angle of the V but block high . 4.4 is a square motor piston and stroke are the same (2.80 inch i think ) .The 3.5 has a piston size of 2.80 but the stroke is slightly smaller .You can fit a 4.4 with the 2 barrel carb in a rangie with only a 40mm body lift less if you are not running dual fuel . If anyone is doing a 4.4 or 3.5 try taking some wieght off the fly wheel engine pick up is quicker . The manifold adpater to bolt of rover SU carbs or injection manifold can be bought for $300 a set from toorak tractor company in melbourne . You can use rover starter motors too the nose is slightly smaller but not a prob . as for piston and lifters for either 3.5 or 4.4 holden ones fit and alot cheaper then rover .

Just found this in the Melbourne trading post ...


Rover 4 stroke, 3.5, GC, with catcher $80 (03) 94789794 Reservoir


Is this what you guys are after?





hahahahahaha ... even comes with a catcher!

Nah thats basically what i'm running at the moment (3y)

We dynoed a lj torana today with a lexus v8. It was a standard engine with an exhaust an AUTRONIC computer and it put out 210hp.Will the rover v8 do that?

overkill wrote:We dynoed a lj torana today with a lexus v8. It was a standard engine with an exhaust an AUTRONIC computer and it put out 210hp.Will the rover v8 do that?

only if 3 spark plug leads are disconnected and it is running on 2 cylinders.



NICK