14psi on 4agze

[LO01UX]

I've just bought a billet 175mm crank pulley for my 4agze from the states, on the website it said for a stock engine it would increase boost to around 14psi and a bit less on a modified engine...

I've got a fairly big front mount, bigport cams, adjustable cam gears, and im swapping the stock throttle body with a n/a 4age throttle body,

Will this pulley work or will it be spinning the sc to fast and just create heat?

[legend]

the 175mm pulley works fine most people have used the nevo 175mm pulleys with good results
it will spin faster and gain more heat but as far as the S/C reliability it comes down to how u will drive
it and maintain it

[The Last Streetfighter]

Also have a read here: http://www.twincam.info/index.php?showtopic=15515

[LO01UX]

So it should run fine with the 175mm pulley.

Im hoping for about 12-13psi once its done since im just making about 6psi at the moment,

Its afm dli gze if that makes any difference

[TERRA Operative]

You'll find the manufacturer info on the SC superchargers right down the bottom of my site.

TX12 = SC12, TX15 = SC14


www.jdmlevin.com

[Duk]

Is there any real point in trying to get a Toyota supercharger to pump 14psi? The discharge temperatures would be damn high and the power to turn it that fast, to pump that amount of air would substantial. Add the wear and tear on the SC, is it worth it?
The power return to effort ratio just doesn't make sense to me.

Eaton Superchrger

[TERRA Operative]

maximum boost ratio for these chargers is 2.0, long term is 1.8 which comes to about 12PSI.

I would start looking at upgrading to an SC14 for that output due to the lower outlet temperatures.

[X kyle X]

im running 12 psi, and dont want anymore, mainly because of what terra has said.....

[Norminator]

i have a nevo 175mm pulley on my 4agze sc12 with front mount, and it goes well... motor ends up seeing about 12 pounds. it's been done many times, and you'll love it when you put that pulley on! but it would be even betterer if it was turning an sc14.

[LO01UX]

The front mount I've got is fairly big which I would assume draw a fair bit of heat away from the intake temp and thus the charger (correct me if im wrong)

It won't be seeing 12psi all day everyday as I am mainly driving around during peak hour traffic during the week so don't boot it much

I've heard the sc14 pumps a fair bit of heat out aswell is that true?

[TERRA Operative]

SC14 chargers pump more air per revolution, which basically equals more boost for less heat rise.

The temp problem isn't the charge air after the charger, it's the temp inside the charger itself as the air is compressed into the intake piping. There's no way to regulate that apart from lowering boost, or fitting a bigger charger.
The problem is in the Teflon coating melting at high RPM or boost.

This is the result of over temp:

[LO01UX]

That is pretty fcuked hard, how likely is that to happen?

Wouldn't that only be if it was at a sustained boost level for a long period of time?

So in the long run its been to go the sc14 with the 175mm pulley? But for the short term it should be fine with the sc12 if its maintained properly?

[TERRA Operative]

SC12 should be ok if you keep the boost to shorter bursts, so the charger doesn't overheat. That one above is well stuffed, from standard boost but a bare pod in the engine bay sucking hot air. Hot = bad for SC chargers....

Cold air induction is an absolute must in any application.

[LO01UX]

So in other words don't thrash it for ages with full boost and it should be fine,

And the colder the air going into the sc the better?

[TERRA Operative]

Yep, that's pretty much it.