Notice: We request that you don't just set up a new account at this time if you are a previous user. If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.
KiwiBacon wrote:
I'm at 2&3 above but haven't yet fitted my intercooler. In a 2.3T fultime 4wd rangie it has 4 wheel traction issues in the wet and can spin up the rear wheels in second in the dry.
This has bugged me for ages, if your loosing traction, it will be the front wheels that spin and one at that, not a big deal with anything with a little more grunt than a rover motor, they dont light up the rear wheels
And they're a pain to drive, with no rev range, great tourers, and ok for lugging around the bush, but when you need to clean the tyres, 3200rpm just wont cut it
I have no problem cleaning the tyres, I've got 15psi boost by 1500rpm and that's where tyres start to howl. With the right tune they pull until the early 3000rpm's. Stock rev limit is 3600rpm.
To spin up the rear wheels on tarmac starts with a corner, the extra load on the rears is enough to break them (aka both of them) loose first.
In the wet or on gravel in an (approximately) straight line they drift mostly evenly.
Yes bigger turbos on a diesel are stupid. You need a small exhaust housing to create enough boost, attempts at installing bigger exhaust housings to reduce backpressure are counter-productive and usually the work of people who work on petrols too much.
I have both boost and backpressure gauges on my engine, I've experimented with a few diff turbos, variable vane and compounds are next.
The stock fuel pump should be capable of delivering around 120cc per thousand shots just by winding out the screw. That'll give you around 600Nm.
Do not put LPG into any diesel you care about. The detonation will kill it. Diesel and air is all you need.
Clean the tyres, yea, what size??
Centre diff or VC??, you'll be spinning the front without dropping the front shaft, unless your doing something magical I dont know about
My last piece of poo would do the double metric ton on 35's. albiet scary , reckon I got a little idea about what they do with horspower
Wanted: Car trailer or beaver tail truck, let me know what you got
KiwiBacon wrote:
I'm at 2&3 above but haven't yet fitted my intercooler. In a 2.3T fultime 4wd rangie it has 4 wheel traction issues in the wet and can spin up the rear wheels in second in the dry.
This has bugged me for ages, if your loosing traction, it will be the front wheels that spin and one at that, not a big deal with anything with a little more grunt than a rover motor, they dont light up the rear wheels
And they're a pain to drive, with no rev range, great tourers, and ok for lugging around the bush, but when you need to clean the tyres, 3200rpm just wont cut it
I have no problem cleaning the tyres, I've got 15psi boost by 1500rpm and that's where tyres start to howl. With the right tune they pull until the early 3000rpm's. Stock rev limit is 3600rpm.
To spin up the rear wheels on tarmac starts with a corner, the extra load on the rears is enough to break them (aka both of them) loose first.
In the wet or on gravel in an (approximately) straight line they drift mostly evenly.
Yes bigger turbos on a diesel are stupid. You need a small exhaust housing to create enough boost, attempts at installing bigger exhaust housings to reduce backpressure are counter-productive and usually the work of people who work on petrols too much.
I have both boost and backpressure gauges on my engine, I've experimented with a few diff turbos, variable vane and compounds are next.
The stock fuel pump should be capable of delivering around 120cc per thousand shots just by winding out the screw. That'll give you around 600Nm.
Do not put LPG into any diesel you care about. The detonation will kill it. Diesel and air is all you need.
Clean the tyres, yea, what size??
Centre diff or VC??, you'll be spinning the front without dropping the front shaft, unless your doing something magical I dont know about
My last piece of poo would do the double metric ton on 35's. albiet scary , reckon I got a little idea about what they do with horspower
Tyres are little ones, 225/75.
Yes it spins up the back wheels, like I said it starts with a corner. The cornering loads are higher on the back wheels which is why they slide first. Once sliding they have a lot less traction than rolling wheels (high school physics, static vs dynamic friction).
Transfer is LT230. A BW case wit VC would shift more drive to the front wheels and wouldn't be as much fun.
This one used to hit the rev limit at 145km/h. It's now geared higher and the theoretical limit is 180km/h. Theoretical because I haven't done it and probably won't. 140km/h now and the cops take your license.
KiwiBacon wrote:
I'm at 2&3 above but haven't yet fitted my intercooler. In a 2.3T fultime 4wd rangie it has 4 wheel traction issues in the wet and can spin up the rear wheels in second in the dry.
This has bugged me for ages, if your loosing traction, it will be the front wheels that spin and one at that, not a big deal with anything with a little more grunt than a rover motor, they dont light up the rear wheels
And they're a pain to drive, with no rev range, great tourers, and ok for lugging around the bush, but when you need to clean the tyres, 3200rpm just wont cut it
I have no problem cleaning the tyres, I've got 15psi boost by 1500rpm and that's where tyres start to howl. With the right tune they pull until the early 3000rpm's. Stock rev limit is 3600rpm.
To spin up the rear wheels on tarmac starts with a corner, the extra load on the rears is enough to break them (aka both of them) loose first.
In the wet or on gravel in an (approximately) straight line they drift mostly evenly.
Yes bigger turbos on a diesel are stupid. You need a small exhaust housing to create enough boost, attempts at installing bigger exhaust housings to reduce backpressure are counter-productive and usually the work of people who work on petrols too much.
I have both boost and backpressure gauges on my engine, I've experimented with a few diff turbos, variable vane and compounds are next.
The stock fuel pump should be capable of delivering around 120cc per thousand shots just by winding out the screw. That'll give you around 600Nm.
Do not put LPG into any diesel you care about. The detonation will kill it. Diesel and air is all you need.
Clean the tyres, yea, what size??
Centre diff or VC??, you'll be spinning the front without dropping the front shaft, unless your doing something magical I dont know about
My last piece of poo would do the double metric ton on 35's. albiet scary , reckon I got a little idea about what they do with horspower
Tyres are little ones, 225/75.
Yes it spins up the back wheels, like I said it starts with a corner. The cornering loads are higher on the back wheels which is why they slide first. Once sliding they have a lot less traction than rolling wheels (high school physics, static vs dynamic friction).
Transfer is LT230. A BW case wit VC would shift more drive to the front wheels and wouldn't be as much fun.
This one used to hit the rev limit at 145km/h. It's now geared higher and the theoretical limit is 180km/h. Theoretical because I haven't done it and probably won't. 140km/h now and the cops take your license.
Try clean some 35" simex centipedes up a steep climb in a foot of clay
The problem with theory, is that pragmatism overalls them with actuals
And yeap, a BW VC tranfers solid drive to the front with rear assist
But still never been able to spin the rear wheels in any of the 20odd rovers I've wrecked....only front wheels, nature of the centre differential and weight shifting of the vehicle ya see
Wanted: Car trailer or beaver tail truck, let me know what you got
cloughy wrote:
The problem with theory, is that pragmatism overalls them with actuals
..........
But still never been able to spin the rear wheels in any of the 20odd rovers I've wrecked....only front wheels, nature of the centre differential and weight shifting of the vehicle ya see
How much torque did these 20 odd rovers have? The 3.5's and 3.9's were nowhere near what a wound up 4BD1T delivers.
Your theory of weight shift isn't complete. You're missing the sideways load of cornering acting more on the rear wheels and rear wheels once spinning having far less grip. In a close to straight line they behave as you expect.
I tried to get a video for you, but the wife wasn't willing.
cloughy wrote:
The problem with theory, is that pragmatism overalls them with actuals
..........
But still never been able to spin the rear wheels in any of the 20odd rovers I've wrecked....only front wheels, nature of the centre differential and weight shifting of the vehicle ya see
How much torque did these 20 odd rovers have? The 3.5's and 3.9's were nowhere near what a wound up 4BD1T delivers.
Your theory of weight shift isn't complete. You're missing the sideways load of cornering acting more on the rear wheels and rear wheels once spinning having far less grip. In a close to straight line they behave as you expect.
I tried to get a video for you, but the wife wasn't willing.
Yep, but twin turboed 302 windsors, 351 windsors and even a supercharged 3.9 have a little torque
that's piss funny
Wanted: Car trailer or beaver tail truck, let me know what you got
Got pics?
That might solve DEF90's power problems.
*edit*
BTW even a windsor is approx 200kg lighter than a 4BD1T and that's sitting right over the front wheels.
Might be another reason you'd always break loose the fronts first.
*/edit*
Got pics?
That might solve DEF90's power problems.
*edit*
BTW even a windsor is approx 200kg lighter than a 4BD1T and that's sitting right over the front wheels.
Might be another reason you'd always break loose the fronts first.
*/edit*
Nah its long gone, had a 6.2chev diesel in one, lacked power but still span front Had bar winch duel battery's hanging over the front
Wanted: Car trailer or beaver tail truck, let me know what you got
hmm anyone know how much to put on the 4BD1 , only driven on weekends (literally)!
comes with new (less then 12 months) garrett turbo and factory manifold
intercooler from rb25 i think?
pyro and gauge
boost gauge
3" mandrel exhaust if you have a 90
Don't you find it a little strange that you're trying to convince me how my rover handles?
It's pretty simple really, my rover is tailhappy. If I overcook a corner without booting it, the rear end slides out.
If I put the boot in in a corner, the rear end spins up and slides out.
As I've said, in a straight line it's (at least one) of the front wheels that spins up first.
My choice went to the lexus v8 (even though its going in an s2 landy ).
But I went with toyota auto and transfercase for ease of bolt togetherness. REason for the lexus v8 is that they are cheap as chips over here. I got my motor for $1000 and my auto and transfer for $600. Bolt it all together, a bit of wiring, fabrication, and you're away.
Im not sure if it will be enough so I have plans of a supercharger
have decided to get my camper 1st, so just bought a 2nd hand trackabout (not much room in the 90 for gear and 2 dogs)
when funds allow i will start on the V8 bug again!!
P.S. have a 130 tub with factory canvas top, 80L fuel and water tanks underneath, sitting on a army rover trailer chassis, extended drawbar, big plastic tuff storage box on front, etc
, reckon I got a little idea about what they do with horspower
that's piss funny
).
