turbo or supercharger

[story]

i have a 2003 lancer oz rally edition should i run a turbo or a super charger I'm concerned with lag and over all power pro's and con's of each I need a professional opinion on this matter because I going to upgrade very soon

[Boyzone]

Originally Posted by story

i have a 2003 lancer oz rally edition should i run a turbo or a super charger I'm concerned with lag and over all power pro's and con's of each I need a professional opinion on this matter because I going to upgrade very soon

Plug with turbo and set it at 0.7 to 0.9 bar test run first..

[ParadoxDHL]

yea i agree i think you should get a turbo and increase the psi and fine tune it to your liking. But along with the turbo there might be more technical things you have to do to accompany the turbo.

[Stanimal]

Hi Story,

Supercharging require much less tuning, has no lag and more torque.

An optimized turbo can give you decent torque and midrange response or you can select a larger turbo and tune your engine for the best top end power but you will not get both.

[matt horton]

could u have a supercharger for low-end and a turbo for high-end at the same time?

[Stanimal]

Originally Posted by matt horton

could u have a supercharger for low-end and a turbo for high-end at the same time?

Compound turbo/supercharging has been done in the past. Usually a fairly large turbocharger is used first then intercooler then the compressed charge is piped to a mildly boosted supercharger mounted close to the intake manifold.

In theory this could give you improved low-end and mid-range torque assisted by the supercharger and high-rpm kick from the turbo with the supercharger freewheeling.

In practice this is extremely difficult to tune. I have seen a couple of magazines giving it a try with limited success. If they have problems making it work with the resources they have access to, you can imagine what the average weekend racer’s chances are.

I personally don’t think the payback is there unless you are trying to build a 500+ hp EVO.

A much easier way to get more torque with a bigger turbo on the EVO is to install stroker kit. Toda makes one.

[SaabJohan]

A turbocharger is always capable to produce more power and/or torque than a mechanically supercharged engine as turbocharging is a more effective way of supercharge an engine (a mechanical compressor cost more crankshaft power).

Supercharging through a mechanical driven compressor and a turbocharger was for example done with the Lancia group B rally engine (it was 1.7-1.8 liters or something like that), but it's quite complicated and add weight.

[beef_bourito]

i personally like superchargers better but turbos are more common and you can pretty much elliminate turbo lag with medium to small turbos with ball berrings and if you want, you might try hooking up a tank of compressed air right before the turbo on the exhaust side and spray a little in it to get it spinning. just a suggestion if you do try this, don't use a scuba tank, they're extremly pressurized, on guy got a small leak in it, the whole thing flew through the trunk and hit him breaking his neck.

[intercooleddan]

One main point you all are forgetting here is what the car is mainly going to be used for is it going to be used for road racing, drag racing, ect. for drag racing you could try this use, a supercharger this would be a rather bad choice because it would sacrifice your torque for boost. Turbo charging is a whole different boat because people talk about "turbo lag" this can be avoided if the turbo charging is done right, you could use twin smaller turbos or go around the lag when using a larger turbo by using a power adder something like N.O.S. On a bigger motor like something like a real car would use something more like a v8 or a large v6 "turbo lag" is virtually unheard of because of the large amounts of torque that the motor already puts out it can avoid any "lag". to sum it up try using TT setup or N.O.S./large turbo setup and it will be fine i say this because turbo use waste gas, and superchargers use torque that is already there and that will hurt the low end power of your car.

[Wasted Income]

Originally Posted by intercooleddan

One main point you all are forgetting here is what the car is mainly going to be used for is it going to be used for road racing, drag racing, ect. for drag racing you could try this use, a supercharger this would be a rather bad choice because it would sacrifice your torque for boost. Turbo charging is a whole different boat because people talk about "turbo lag" this can be avoided if the turbo charging is done right, you could use twin smaller turbos or go around the lag when using a larger turbo by using a power adder something like N.O.S. On a bigger motor like something like a real car would use something more like a v8 or a large v6 "turbo lag" is virtually unheard of because of the large amounts of torque that the motor already puts out it can avoid any "lag". to sum it up try using TT setup or N.O.S./large turbo setup and it will be fine i say this because turbo use waste gas, and superchargers use torque that is already there and that will hurt the low end power of your car.

Yeah, what he said!!

[Wasted Income]

Originally Posted by beef_bourito

if you want, you might try hooking up a tank of compressed air right before the turbo on the exhaust side and spray a little in it to get it spinning. just a suggestion if you do try this, don't use a scuba tank, they're extremly pressurized, on guy got a small leak in it, the whole thing flew through the trunk and hit him breaking his neck.

WTF?? A compressed air tank would NEVER have enough flow to get a turbo spinning like that. Look at the cross section of a air compressor hose vs. the exhaust pipe....notice a difference??

Also, you'd throw the computer way the fukk off. The O2 sensor would have a fit. It would think it was running way lean and add a ton more fuel.

As for the SCUBA tank, a small leak wouldn't do anything...how is that any different from opening the valve? You have a problem when you have a LARGE leak and it de-compresses rapidly.

[SaabJohan]

Pressurized tanks have been used to help spool turbochargers, mainly on trucks which already has a pneumatic system (with compressor and tanks). The problem is that huge amounts of air is needed, this since the air isn't heated, so a higher pressure must be used instead.

WRC cars used (uses) a tank which is feed with air during boost which can be used to feed the engine at a later time.

[xyfalconsrock]

all those ideas are ok.But if i had that lancer i'd pump in some V8 power then supercharge.Bye,bye rice burners.

[-Jayson-]

umm yeah a scuba tank can not get a small leak and fly through the back seat, then the driver seat, and break the guys neck. thats the stupidest thing ive heard in a long time. Even with a large leak it would be tied down in the trunk and wouldnt go anywheres, it would make a really loud hissing noise. While their is alot of pressure in them, it isnt enough to send them flying around like in the movies. And those tanks go through so much testing before they are sold its almost impossible to just break it off creating a huge leak, unless the guy was a cheap bastard and bought one from the junkyard that was covered in rust and even at that, if it had a bad enough seal to where it could break off, the gas would have leaked out long before he got a chance to use it.

[raven_240]

I'd have to say turbo. Most turbo's will reach max preasure by atleast 4000 rpm, and thats on a small lill 4 banger pushin 20psi. If you get the right turbo and push like 12psi, after slowly working your way up from 7psi and tunning of course. You will probably spool by no mor than 3,500. And how often when racing do you drop under 3000 drag or other wize.

However if you are not that serouse about power and are hard for cash. Superchargers are cheaper and easier to deal with. Im not a big fan of superchargers because of thier inharent ineficiancy's but the do ad power and are much cheaper than a turbo setup