Vehicle & Technical > Defender

supercharger and turbo'd 200 :-)

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lenrover:
Surely a hybrid T-28 with a smaller comprssor housing , cut back blades,and 360degree bearing would give more poke lower down sure you'd lose maybe 3-5bhp at the top of your rev range but thats not really important in an off roader is it? especially a 200 where most of the grunt is delivered low down?

burgerman:
Here is my thoery ---  But before i start , I know in the jet ski world if the impellor spins too fast its called cavitation, Not sure if its the same for air related masses ??    

   Anyhow, I digress-----  I would say that a turbo charger sucks in  as much air as needed in an increasing amount (as the boost rises)   And a supercharger is set to increase in a steady increase, ----  so if a supercharger was coupled up to a turbo i reckon there would be some serious fuel/air ratio problems, something like an initial surge from the s/charger but as the turbo spins up and asks for a huge rush of air , the charger would not be able to supply,  But i reckon a variable pulley on the charger could sort it out, But then were getting very serious indeed,   Any how its just my thoughts, if someone blows them out of the water so be it,  I have plenty of other thoughts in there to go yet.   P.S i did bring this type of question up at a visit to jaguars HQ when i worked for them,   the question was Kinda like why does the "normal V8 have VVT (variable valve timing) and the supercharged one doesnt ?? Didnt get a proper answer though,  So i made up my own thoery/thought as stated above

extreme90:
ive looked into it a touch, but even so the roller bearings still have lag in them, not alot but they do
what i want to do is cut out the delay between off boost and on boost
options...
supercharged low rpm...turbocharged high rpm
twin turbo, 1 little doddy turbo of a new ford fiesta and a std lr turbo..
little turbo on boost at idle rpm  :shock: big turbo interveens when max pressure achieved by little turbo

or just 1 little puney turbo that is already spun up at idle rpm
so the slightest of throttle and youve got boost

i dunno, its a whole new can of worms with endless options

or to hell with it and fit a gmv8
all the torque youll ever need at idle rpm  :shock:
dan

lenrover:
Anti lag? dunno how do-able it is on a diesl but its bound to result it big clouds of black smoke and boost noise- 8)  8)  8)  8)  8)

extreme90:

--- Quote from: burgerman ---Here is my thoery ---  But before i start , I know in the jet ski world if the impellor spins too fast its called cavitation, Not sure if its the same for air related masses ??    

cavitation is when you get air pockets trapped inbetween the impellor, so it revs up and you get no where cos its moving air instead of water
like a clutch slipping on a car
likewise with outboards/sterndrives with propellors, throw it into a to tight bend it traps air and engine scream you get no where  :lol:
sorry work on boats  :roll:
back to thread  :roll:  :lol:
--- End quote ---

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