I saw this quote on a MG board, and thought you might enjoy..
"Injection is nice, but I'd rather be blown"
"Injection is nice, but I'd rather be blown"
hummmm....looks nice in the Disco
we have plenty of folks with Discos AND MGBs...what's that about...I am one of them!!!! I also have a 1985 Saab 900T with 280K on it...still 1st motor and turbo....REALLY! So maybe I should mix all 3 cars together and see what I get?!?!?
The supercharger looks nice though...but US Spec. Rovers have had emissions related lean burn "problems" for years so unless you could really address that problem, I'd expect pre-ignition to pretty much trash these motors sooner or later....the RPI site tells that story over and over.....
we have plenty of folks with Discos AND MGBs...what's that about...I am one of them!!!! I also have a 1985 Saab 900T with 280K on it...still 1st motor and turbo....REALLY! So maybe I should mix all 3 cars together and see what I get?!?!?
The supercharger looks nice though...but US Spec. Rovers have had emissions related lean burn "problems" for years so unless you could really address that problem, I'd expect pre-ignition to pretty much trash these motors sooner or later....the RPI site tells that story over and over.....
Running rich and lean are not limited to superchargers, and as with any kind of upgrade, forced induction or not, it is related to ECU tuning. That is simply a component of a quality package.
Everyone likes to reference the RPI site, but come on, they are a little biased, don't you think?? I mean if you buy a supercharger, you wont be buying their upgrade products. So of course they will go out of their way to point out some negatives, or bad examples.
I don't consider either FI or NA better than the other, but both can have major problems if not done correctly, and both can have great upsides.
Everyone likes to reference the RPI site, but come on, they are a little biased, don't you think?? I mean if you buy a supercharger, you wont be buying their upgrade products. So of course they will go out of their way to point out some negatives, or bad examples.
I don't consider either FI or NA better than the other, but both can have major problems if not done correctly, and both can have great upsides.
I know of four Rimmer(Eaton M90) supercharged Rovers in my area. Three on Gems 4.0's(97 D90, 97 Disco, 96 RR) and one on a Bosch 4.6. From what I've heard,hey have all been trouble free. The owners rave about them. Would I put one in one of MY trucks? Probably not. Mostly along the lines of what RPI states. I think the M90 is too small to provide enough displacement efficiently. A better fit would be a centrifugal super charger like a Vortech or Powerdyne. It wont give you the off the line grunt the Eaton would, but it would boost power gradually throughout the curve. There's an outfit in Australia that has a kit for the 3.9. It wouldn't be too difficult to mount on a Gems 4.0 or 4.6.
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ShaunP
Guest
There are a number of Places here in Oz that do kits the one you are thinking of is CAPA I think.
http://www.capa.com.au/kits_landrover.htm
The only reason why engines fail is because they are not set up correctly in the first place or people get greedy an run to much boost. In real terms an engine doen't need much boost to make a differance. Holden have been selling supercharged V6 Commodores here for years and they don't seem to have any problems they use the same blower as the Jag XJR engines, Merc make their Kompressor range. Super charging is fine just don't get greedy and make sure you get the fuel mapps correct.
http://www.capa.com.au/kits_landrover.htm
The only reason why engines fail is because they are not set up correctly in the first place or people get greedy an run to much boost. In real terms an engine doen't need much boost to make a differance. Holden have been selling supercharged V6 Commodores here for years and they don't seem to have any problems they use the same blower as the Jag XJR engines, Merc make their Kompressor range. Super charging is fine just don't get greedy and make sure you get the fuel mapps correct.
Blower
Putting a blower on any stock engine without several required enhancements (fuel,timing,flow) is asking for it. I learned the hard way when I had the Rimmer Eng. knuckelheads slap a blower on my 95 D1 stock 3.9. It lasted approx 5k miles before it melted a piston somewhere in the middle of Nebraska. Remarkebly, I made it all the way back to Denver at highway speed. I relied on so-called experts without doing my own research and paid the price.
After educating myself on forced-induction and positive displacement superchargers, I decided to give it another whirl. I had a 4.6 large journal (cross-bolted) engine custom built by V8 Developments in England. The bal & bp'd engine has a cross-drilled, tufrided & polished crank, 8-1 comp. pistons, H-beam steel rods, High-Flow Stg III heads (ported & polished, larger valves), custom ground cam, adjustable timing belt, MSD Pro-Billet distributor, Accel Engine Mgmt system, 29lb. injectors, AutoRotor 1.1L positive displacement blower (mine runs up to 5psi), 10mm plug-wires, HP fuel pump (from a Buick Regal GN), Hooker headers, 3" exhaust, hours and hours and hours of tuning sessions, etc..etc..etc.. Oh yeah and a s--t load of cabbage.
As you can see, forced induction should not be taken lightly. There are vendors & people who claim you can slap one on a stock motor without any enhancements. In my humble opinion, the only way you might get away with this is to run the blower at very very low pressures. This will limit the amount of power significantly and really cancels out any performance gains from the unit making it not worth the trouble. If you want more power, buy a chip for your 4.0, install some Stg III heads, headers and a 3" exhaust system or up your displacement to a 4.6 or a 5.2. If you want a supercharged engine I would highly recommend having an engine built for that specific purpose. I've put almost 60k miles on my engine without any problems. It is very reliable (drove it from Denver to Cabo San Lucas & back) and it makes some wicked power.
Putting a blower on any stock engine without several required enhancements (fuel,timing,flow) is asking for it. I learned the hard way when I had the Rimmer Eng. knuckelheads slap a blower on my 95 D1 stock 3.9. It lasted approx 5k miles before it melted a piston somewhere in the middle of Nebraska. Remarkebly, I made it all the way back to Denver at highway speed. I relied on so-called experts without doing my own research and paid the price.
After educating myself on forced-induction and positive displacement superchargers, I decided to give it another whirl. I had a 4.6 large journal (cross-bolted) engine custom built by V8 Developments in England. The bal & bp'd engine has a cross-drilled, tufrided & polished crank, 8-1 comp. pistons, H-beam steel rods, High-Flow Stg III heads (ported & polished, larger valves), custom ground cam, adjustable timing belt, MSD Pro-Billet distributor, Accel Engine Mgmt system, 29lb. injectors, AutoRotor 1.1L positive displacement blower (mine runs up to 5psi), 10mm plug-wires, HP fuel pump (from a Buick Regal GN), Hooker headers, 3" exhaust, hours and hours and hours of tuning sessions, etc..etc..etc.. Oh yeah and a s--t load of cabbage.
As you can see, forced induction should not be taken lightly. There are vendors & people who claim you can slap one on a stock motor without any enhancements. In my humble opinion, the only way you might get away with this is to run the blower at very very low pressures. This will limit the amount of power significantly and really cancels out any performance gains from the unit making it not worth the trouble. If you want more power, buy a chip for your 4.0, install some Stg III heads, headers and a 3" exhaust system or up your displacement to a 4.6 or a 5.2. If you want a supercharged engine I would highly recommend having an engine built for that specific purpose. I've put almost 60k miles on my engine without any problems. It is very reliable (drove it from Denver to Cabo San Lucas & back) and it makes some wicked power.
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ShaunP
Guest
I don't know what they are like. I would probably talk to the guys at Jordan-rovertech they build some big HP Rover engines and I know they have done a Bosch engined Rangie as there was a story in one of the 4x4 mags here, I think they may have sent some kits to the UK for the UK Cop Discos but don't quote me on that. These guys know whats what I reckon.Kneel said:
http://www.jordanrover-tech.com.au/index.cfm