oadamo
|
| posted on 12/7/07 at 08:55 PM |
|
|
turbo or supercharger
should i go turbo or supercharger on my 2l zetec what do you think ???
i like the boost off a turbo but i like the noise of a supercharger lol. help
adam
|
|
|
|
|
hoots_min
|
| posted on 12/7/07 at 09:00 PM |
|
|
Personal preference would be supercharger for the noise. Also does the boost from a turbo not add extra fatigue to the engine?
Today is a good day: I achieved new heights of ineptitude.
|
|
|
ed_crouch
|
| posted on 12/7/07 at 09:02 PM |
|
|
Supercharger. More low down torque, and the modern centrifugal type chargers arent far off turbo performance at the top end either.
What you want is a procharger. Its basically a turbo compressor and housing driven off the engine by a compound epicyclic gearbox that makes getting
on for 100kRPM at the impeller. Things like the Eatons and Sprintex (i.e. roots blowers) are fine low down, but they run out of puff at the top
end.
TVR Power use another such centrifugal charger on their Chimaera conversions.
Ed.
I-iii-iii-iii-ts ME!
Hurrah.
www.wings-and-wheels.net
|
|
|
JoelP
|
| posted on 12/7/07 at 09:05 PM |
|
|
simple, use both 
|
|
|
RazMan
|
| posted on 12/7/07 at 09:08 PM |
|
|
Worth remembering that a blower will sap about 30 bhp to make 100bhp (very rough guide) A turbo's power is freeeeeeee 
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
|
|
|
Danozeman
|
| posted on 12/7/07 at 09:18 PM |
|
|
Id go for both if i had room to do it.
Low down from the supercharger and the turbo for high up.
I do like the kick in the back from a turbo though..
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
|
|
|
BenB
|
| posted on 12/7/07 at 09:23 PM |
|
|
On a low weight car like a 7 you want rapid throttle response which usually means a supercharger....
And yes, you can do the same with a turbo with lots of clever tricky to overcome humungous turbo lag by why bother? 
|
|
|
higgsti
|
| posted on 12/7/07 at 09:56 PM |
|
|
ive been in a turboed 2litre zetec and belive me there was no lag
|
|
|
bimbleuk
|
| posted on 12/7/07 at 11:27 PM |
|
|
Coincidentally I've just posted a short dyno video of my Rotrex SC install....
http://www.locostbuilders.co.uk/viewthread.php?tid=70421&page=1#pid588380
I've had turbos but decided the linear power delivery of an SC would be better suited. The centrifugal Rotrex is as far as I'm aware the
smallest and most efficient of this type.
I don't suffer lag but my setup was deliberately boost limited to aid traction and transmission durability. I've also limited the top end
as the Rotrex was geared to 8000RPM but my nerves ran out at 7200RPM!
|
|
|
thomas4age
|
| posted on 13/7/07 at 08:24 AM |
|
|
You don't want anything else than a rotrex if you go for a centrifugal, and most defenatly not a procharger or vortech, those are very
inefficient.
if something more Locost is in order just yank an eaton M45 or M62 on it. the 45 will do anything up to 250hp 62 will go a little further.
currently mounting twin m45's on a lexus V8
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
|
|
|
coozer
|
| posted on 13/7/07 at 09:46 AM |
|
|
Would it be worth fitting a charger off a Mini?
Or, would it be easier to get TTS to fit one of theirs?
Steve
1972 V8 Jago
1980 Z750
|
|
|
Chr!S
|
| posted on 13/7/07 at 10:53 AM |
|
|
I would like to suggest the issue of control!
If you have a turbo you would want to make it a nice smooth delivery as going from on/off boost in the wrong place can be nasty. Usually though you
can adjust your driving for this...
The supercharger would be linear delivery making a very controllable and responsive car. The install would probably be easier too.
Didn't PPC do a £50 supercharger conversion or something? They definitely ran a feature on SC conversions.
Having said that i'm a turbo man myself, had way too much fun with my old S13...
|
|
|
thomas4age
|
| posted on 16/7/07 at 03:11 PM |
|
|
quote:
Originally posted by coozer
Would it be worth fitting a charger off a Mini?
Or, would it be easier to get TTS to fit one of theirs?
Steve
eaton M45 = bmw mini cooper S
TTS is rotrex agent
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
|
|
|
C10CoryM
|
| posted on 16/7/07 at 04:25 PM |
|
|
I prefer superchargers over turbos unless you are drag racing. Steady state cornering is much nicer when you aren't trying to keep the turbo
from spooling up.
With superchargers there are two (feasable) options, twin-screw or centrifugal.
The twin screw is what will give you the low end torque a 4cyl so desperately needs, and the centrifugal will give you smooth power increase. The
centrifugal just feels like you have a larger displacement engine.
If I decide I like my locost enough when its done, the 2.3L is getting a centrifugal blower.
Cheers.
"Our watchword evermore shall be: The Maple Leaf Forever!"
|
|
|
