Discussion
quote:
Anyone thought of fitting a supercharger? how easy do you think it would be, would the engine need any internal mods?
Simon
Seems it is relatively easy on low boost, main job is changing the cam and physically attaching the s/c and it's drive. If you want more boost you need to worry about charge temperatures and will need to fit an intercooler and drop the CR, fit a boost retard ignition unit and so on.
The issues with charge distribution frankly I think are complete rubbish, with an injection system you are guaranteed equal fuel distribution and with a carb the supercharger improves the distribution by mashing the charge up. The only places I've come across this 'problem' are from people who offer highly tuned V8 engines but don't do superchargers. Supercharged Range Rovers are pretty well developed these days so clearly theres no fundamental problem with it.
quote:
so what is 'low boost' and how much extra power would that liberate?
Up to say 130% charge, about 30% more torque.
quote:
Why would the cam need to be changed?
Supercharged engines suffer from blow-through at low RPM i.e. the pressure that has built up in the inlet manifold blows straight through the cylinder and out the exhaust during the overlap period. Result is little/no extra torque, diabolical fuel consumption and a melted exhaust. They normally use a very short overlap cam to minimise this. It compromises the top end, but hopefully with a massive increase in mid-range torque you won't worry about that.
quote:
Can you get supercharged range rovers?
Don't think you can get them new from Land Rover but I know there are at least two companies specialising in aftermarket s/c conversions - mainly aimed at Arab markets I believe. You can easily spend a fortune on this sort of thing!
Cheers,
Peter Humphries (and a green V8S)
quote:
The issues with charge distribution frankly I think are complete rubbish, with an injection system you are guaranteed equal fuel distribution and with a carb the supercharger improves the distribution by mashing the charge up. The only places I've come across this 'problem' are from people who offer highly tuned V8 engines but don't do superchargers. Supercharged Range Rovers are pretty well developed these days so clearly theres no fundamental problem with it.
I agree. DPR and Dave Haughin successfully superchargered the 350 in the late '80s using the Sprintex supercharger with no major problems.
FYI the Sprintex licence is currently with an Australian company who are developing the unit for the Range Rover.
Yep tis true but look at the power outputs and it is clear that you can get more power going down the tuning/bigger engine route. When youb then start to add all the other things that need uprating it starts becoming an expensive option.
Steve
www.tvrbooks.co.uk
Steve
www.tvrbooks.co.uk
have a looky here
www.capa.com.au/kits_landrover.htm
im currently changing to a programable ecu to facilitate the addition of a powerdyne blower at some point..
mapping from the dissy and the throttle to start with and then adding a manifold pressure sensor to adjust for on/off boost. The aim is to put the blower through a clutch so it can be in or out ala Mad Max Hee hee hee.
I think the specific site that warns about superchargers talks about a specific blower with a specific manifold adaptor which doesnt suit the inlet.
Oh yes and the rest of the car is already uprated...
G
www.capa.com.au/kits_landrover.htm
im currently changing to a programable ecu to facilitate the addition of a powerdyne blower at some point..
mapping from the dissy and the throttle to start with and then adding a manifold pressure sensor to adjust for on/off boost. The aim is to put the blower through a clutch so it can be in or out ala Mad Max Hee hee hee.
I think the specific site that warns about superchargers talks about a specific blower with a specific manifold adaptor which doesnt suit the inlet.
Oh yes and the rest of the car is already uprated...
G
quote:
have a looky here
I did and all that happens is the engine power is upgraded to what a decent 5 litre job will turn out without having to go down all the mods route etc.
Back to the if you want to do it because you saw Mad Max then fine but otherwise it is not logical. But neither was the 520 and that din't stop me...
I'll get my coat...
Steve
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