2zz Supercharger vs Turbo

[sportivo_03]

Hi all

Just after any opinions on supercharging my sportivo. Since turbos seem to not go well with std internals wouldnt supercharging be more engine friendly since they make more linear boost ie; more revs more boost. Im talking centrifical blowers here. Turbos tend to come on strong at boost threshold point and put alot of stress on the engine at that time.

So a low boost supercharger would build up boost as the revs rise to redline and not put as much stress on the engine....

Cant seem to find any places in sydney that have info on this though?

Isnt there a 2zz supercharged factory rolla overseas?

Any info much appreciated?????

[Rolla_Boy]

http://au.toyotaownersclub.com/forums/inde...hl=supercharger

Plus turbo would be all custom

[Suprathai]

Do a search plenty have been discussed and mostly discussed only.

Turbo or S/C it all comes down mainly to your tune and what quality parts you are using.

S/C you could try sourcing the kits, but even then they are mostly all discontinued I believe.

Not many people can give you an opinion cause not many people have a s/c zze123 corolla....

Remember to search before proceeding any further

[CHA54]

turbo's less stressful on an unopened motor than a supercharger. Makes more power pound for pound too.

[supertownace]

it doesn't matter what method of forced induction you choose...if your engine is worn both types will speed up the impending rapid launch of engine parts into a low orbit.

both turbocharging and supercharging have their respective features as well as down sides.

supercharging takes horsepower to drive the compressor(downside) but the horsepower gain usually overrides this(feature) plus there is no extra under bonnet heat buildup (feature)

supercharging however is linear in boost rise in that the harder you rev the engine the more boost created. this is set by the ratio of pulley sizes you use.(downside)

turbocharging uses exhaust gas to build boost(heat buildup under bonnet(downside)) and requires no mechanical effort from the engine(feature)

the boost created by the turbo is infinately variable via wastegate control(feature) as you can control when full boost is achieved at whatever revs you want(feature)

turbochargers are not as bulletproof as superchargers(downside) as a supercharger does not need a period of cool down time to protect the internal rotating parts.(speeds of 120 000rpm are reasonably common in turbochargers) the same goes for the external intake plumbing needed for turbos.(pressures of up to 50 psi are common)

turbocharging an engine is a lot more complex to setup than supercharging. you need oil and cooling water hoses for the turbo. you also need to fabricate(if one isn't commercially available) an exhaust system from the engine to the turbo turbine housing then out the back of the vehicle.(don't forget a high flow catalytic converter too)

an intercooler is common to both types of forced induction. although supercharged intercooling isn't as common as the turbo version. as mentioned before turbocharging creates a lot of under bonnet heat and so intercooling has more advantages over supercharged intercooling.

i believe a company in west australia does custom forced induction kits for vehicles. from memory their name is CAPA im unsure if they still exist.

hope this helps

cheers

[Dead]

it doesn't matter what method of forced induction you choose...if your engine is worn both types will speed up the impending rapid launch of engine parts into a low orbit.

Yet the turbo is still less stressful.

[supertownace]

so you call hitting 30 pound boost at 1200rpm "less stressful"??

before you come back with an uneducated ill informed answer.......consider this...

for every 7psi you force into an engine you DOUBLE atmospheric pressure...that is you effectively increase your engine capacity TWOFOLD.

so at 28psi you effectively turn your little 2 litre engine into 8 litres.

henceforth the reasons for little riceburners to self destruct quite often when their owners try and squeeze too many horses out of something never designed to do it.

cheers

[CHA54]

since the OP is referring to supercharged and turbocharged 2zz's, you'd think most people would consider the boost level's the aftermarket kits run...

so, take one of the charger kits that run 7psi as a reference, turbo setup running 7psi will put less stress on the 2ZZ and make more power from results all over the world.

The setup is a little more complicated but easily intercooled in comparison to some of the charger setups, will make more usable boost than a rotrex too.

I love the instant torque of the roots style chargers on toyota 4cyl's, but when you're talking small boost amounts that these kits run, only a small turbo is required to make that boost and flow it to redline, turbo's of this size also spool very early in the rev range and are comparible to a roots style charger in my experience in terms of response (full boost by 2000rpm etc)

Example of a centrifugaly charged 2zz can be found here: http://www.ozcelica.com/deltaforum/index.php?showtopic=6165

Plenty of low boost 2zz's can be found on newcelica forums too.

Edited June 8, 2008 by rollamods

[Dead]

I don't need to come up with an answer, because this guy always seems to have them:

since the OP is referring to supercharged and turbocharged 2zz's, you'd think most people would consider the boost level's the aftermarket kits run...

so, take one of the charger kits that run 7psi as a reference, turbo setup running 7psi will put less stress on the 2ZZ and make more power from results all over the world.

The setup is a little more complicated but easily intercooled in comparison to some of the charger setups, will make more usable boost than a rotrex too.

I love the instant torque of the roots style chargers on toyota 4cyl's, but when you're talking small boost amounts that these kits run, only a small turbo is required to make that boost and flow it to redline, turbo's of this size also spool very early in the rev range and are comparible to a roots style charger in my experience in terms of response (full boost by 2000rpm etc)

Example of a centrifugaly charged 2zz can be found here: http://www.ozcelica.com/deltaforum/index.php?showtopic=6165

Plenty of low boost 2zz's can be found on newcelica forums too.

[selyaT]

Similarly, this thread need not exist, because it has been discussed 1 million f@cking times, it's just that most of the mods are at the national meet so it hasn't been Northy'd yet

[sportivo_03]

Thanks for the input people, let you know the results soon.......................

[xoom]

Thanks for the input people, let you know the results soon.......................

hey mate,

i dunno what state ur in or what ur knowledge is of cars or in particular the 2zz in the sportivo so all im gonna say is this ..... BE VERY VERY CAREFUL who works on ur car.

not many people know the inner workings of this vehicle and from a tuning perspective what it does and doesnt like ......

if ur in sydney come along to one of the monthly meets and i'd be more than happy to have a chat but as ive stated to others previously ...... an F/I project on a 2zz = you get what u pay for ...... if ur gonna go it in cheap ur gonna get urself an un-reliable time-bomb waiting to go off.

to ur response of turbo vs s/c ....... since we know what a turbo 2zz in a sportivo can do i wouldnt mind someone getting a s/c sorted thats gonna come back to us with results rather than just disappearing after the project is done.

cheers

Bill

[AE102]

you can get the full TTE kit from Prolex in the UK - they bought the remainder of the supercharger kits from TTE. For £1700 (soz dont know what that is in $) you get the full works - supercharger, ECU, throttlebody and i think you can upgrade to a front mount I/C. You can download the tech docs of Toyota's site in Europe. straightforwrd conversion - all bolt on as far ai'm aware..................

here's the link: http://www.prolex-uk.com/store/product_inf...products_id=478

Edited June 9, 2008 by AE102