| Author | Message | ||
     Harring Jordan (Hjor) New Member Username: Hjor Post Number: 1 Registered: 07-2003 |
How can I tune up my Disco V8 MY2003 for more Power? Or where can I find information about it? | ||
| Luis Constantin (Luisc) Member Username: Luisc Post Number: 100 Registered: 02-2003 |
It all depends on a)how much are you willing to spend, b)warranty issues, c)how deep are you willing to get into the engine. I've had my heads and intake bench flowed. Just got my ECU back with its new performance chip. Talking to someone at Powerchip, we think I might get between 215 and 225hp with the 4.0. I'm reinstalling the ECU this weekend. I'll let you know how it feels. Wish I knew where there was a dyno around Austin. | ||
| Dan Armbruster (Dan_armbruster) Member Username: Dan_armbruster Post Number: 230 Registered: 04-2003 |
You could spend a large sum of money or you can accept the fact that your rover isn't a racecar and just deal with it. Seriously though, try changing to a high flow air filter and maybe new wires and synthetic oil. After it's all done, don't expect any kind of a speed demon. I was sick of my slow ass disco so I just bought a bimmer. Still love the rover though! | ||
| Harring Jordan (Hjor) New Member Username: Hjor Post Number: 2 Registered: 07-2003 |
Thanks for Tipps! Can I use a K&N 57i Performance Kit for the V8? I think it's a not expensive solution | ||
| Chris Browne (Chris_browne) Member Username: Chris_browne Post Number: 237 Registered: 02-2003 |
Add a K&N, replace the stock exhaust with an NRP, get the timing adjusted is about as much as is possible without going deeper into the engine. Porting etc tend to release power not torque which is necessary to tug 4800lbs off the line. If you are looking for the best 0-60 times, you bought the wrong vehicle. Though lowering the gearing from 3.54 to 3.8 or 4.1 and retaining the stock tires will make a difference at the cost of comfortable cruising especially with the 4.1s. Want more, check out www.rpiv8.com and find yourself with a good shop to do the work replacing the engine, but be prepared to kiss the warranty good bye. Ever drive the new RR? might be a good vehicle for you. Control, speed etc... | ||
| Luke Tolson (Luke4696) New Member Username: Luke4696 Post Number: 32 Registered: 06-2003 |
Chris, Did you dyno your truck before the head/intake work in order to get a base line number for comparison? Also, did you look into a mild cam that could complement what already has been done (is one even available?)? I know that a great deal of the DWeb people really beat the hell out of their trucks off road, but for guys like me who enjoy off-roading but still like solid acceleration in town and decent passing power, the land rover after market for parts of this nature is somewhat anaemic. Besides RPI Engineering, is there another source for after market parts dealing with the motors? Heads, intakes, cams, blowers/turbos, chips, wires or other "go fast" goodies located in the US. I enjoy the off-road as much as on road, and there is no reason that a Land Rover can't be as capable in both situations. I know this isn't "the fast and furious", but there has to be something out there that can be done that is not uniquely a high end tuner application like RPI. Just my $.02, Luke | ||
| Jake Hartley (Jake) Member Username: Jake Post Number: 203 Registered: 03-2002 |
Check with Crane Cams or another American cam grinder to see what they have available in torque producing cams. Most made cams for the Buick that this engine is based on and could tell you what might fit, depending on your year Disco. A good free flow exhaust will help also, as would a chip. K&N is not very popular amongst the board, but it depends on your driving locales. Headers could help. if the tube size and collector length were geared towards producing low-end power. Gearing always helps, but with a trade-off on highway speed with stock size tires. If you change the cam, change the springs. Head flow work is good if it is directed at putting the power in a usable RPM range,i.e. remember that you are not making a street rod here. None of this is cheap and the results may not seem worth the money if you cannot do most of the work yourself. | ||
| Luke Tolson (Luke4696) New Member Username: Luke4696 Post Number: 33 Registered: 06-2003 |
can anyone offer anymore details about the origin of the 4 litre block in the Disco II? People have been upgrading Buick motors for years (grand national, GNX) and maybe providers of equipment for these cars and other american vehicles could have equipment that could be used in this application. I know free flow headers/exhaust as well as chips can provide some boosts, but that stuff is relatively expensive and provides little return in hp, torque, and mpg. I am more interested in substantial gains from a cam, heads, upgraded intake as well as all the exhaust and computer components. Any thoughts at all, or should I trade in the Disco for a Escelade and a whipple charger? Maybe a can try to buy my crew cab Dodge back and work on the 360 (sarcasm) . | ||
| Nate Jedinak (Ducati) Member Username: Ducati Post Number: 45 Registered: 12-2002 |
I believe there's an entire book devoted to tuning Rover V8's, you might want to check there. IIRC it covers the RR 4.6, too, so you should get some good ideas there. Or try contacting Overfinch and see what they have to offer for the 4.6... Exhaust and whatnot won't fit, but they may have cams, etc. Some have mentioned a nice power boost after having their heads ported and flowed (after carbon buildup). I bet porting the heads, with lumpier cams and a better exhaust should free up some power. Another place to check might be the Morgan owner's groups. I belive the Plus 8 uses the 4.0L Disco engine. There has to be someone with a 4.6 there... I'm surprised you don't feel the 4.6 is adequate... I find it plenty torquey and powerful for the street. I have a motorcycle for the days I feel like a speed fix, tho, no way a 4x4 would ever truly satisfy acceleration urge ;) |
