Customized Power Deck Spacer for 3SGE, Installed, what I can say?! Nothing but responsive!!! Options

[vincent_doggy]

Ingridients





Fitted on a scrap engine













This post has been edited by vincent_doggy: Sep 18, 2009 - 11:31 AM

[njccmd2002]

built in some leds and conect to 12 volts. it may look cool, guess its only for looks.

[BonzaiCelica]

ooo very nice, fiberglass im guessing. this is the same exact thing they have on nengun.

http://www.nengun.com/top-fuel/power-deck-spacer

and my guess is if you had an ss-III with redtop in it you would be making custom engine parts for that too.

This post has been edited by BonzaiCelica: Sep 3, 2009 - 4:39 PM

[Sinyk]

I'd like to see some tests to prove that 10hp gain.

[Kwanza26]

If anything... you'll probably lose top-end power and gain low-mid range torque because that essentially increases intake volume, thus reducing intake velocity...

[Rusty]

did you get the other part required for this?

[vincent_doggy]

did you get the other part required for this?

u mean gasket and longer screws, O Ring and stuffs?



This post has been edited by vincent_doggy: Sep 18, 2009 - 8:31 PM

[Rusty]

no, the larger TB

[vincent_doggy]

Just Fit on my ST202C
I am not a tech guy, and I don't do DYNO
What I can say is the REV go up faster, and seems responsive
I like it!!!

[808celica]

good stuff V_D

[delusionz]

I don't know about NA but I thought this would work for turbocharged. Increased volume = more air at same pressure, ST205 ecu = pig rich. Yeah?

[Bitter]

large air volume = good for a high revving NA engine. anyone know how big the intake chamber volume is on a 2zz? its 4.5 liters for a 1.8 liter engine!

[vincent_doggy]

ooo very nice, fiberglass im guessing. this is the same exact thing they have on nengun.

http://www.nengun.com/top-fuel/power-deck-spacer

and my guess is if you had an ss-III with redtop in it you would be making custom engine parts for that too.

Its not made out of Fiberglass.

Its crystal clear Acrylic, and used CNC Laser Cutting Machine to make it

This post has been edited by vincent_doggy: Sep 18, 2009 - 8:51 PM

[vincent_doggy]

no, the larger TB

This mod not including the TB, just the Deck spacer itself, a new gasket and some Longer Screws

I'd like to see some tests to prove that 10hp gain.

lol, I am not gonna DYNO it twice, on and off... the 2 x DYNO might cost more than the Deck Spacer itself...

[Rusty]

well we pretty much know the standard dyno run figures, so why not just do 1 run??

[freddy121389]

anything available like this for the 5sfe?

[delusionz]

Would this not upset ACIS operation too?

when ACIS opens up for high rpm operation, they flick up (sitting horizontally) to block off that top part of the manifold, when this happens it doesnt matter how much extra volume u put in there, its not used.

In low rpm operation the butterflys are vertical... there is a small gap underneath them allowing for just the bottom half of the intake runner space to be used, the rest of the vacuum sucks from the empty chamber you've just enlarged. Now you've also opened up a path that was once a dead end to allow vacuum to suck over the top of the butterflies and through the top half of the intake runner space effectively removing ACIS operation. Now you've lost mass amounts of low end torque and will not have gained anything up top. you can prove this by zip tieing the actuation lever you'll notice the 3S-GE bogs down if ACIS is open too early in the rev range.

This post has been edited by delusionz: Sep 19, 2009 - 8:25 AM

[turnip]

This was featured in the last Hyper rev for the celica and they claimed 12 ps for the for the non vvti 3sge. In theory it should work and I can see it adding a few ponies over the curve in mid to high rpm from experience and there (hyper rev) dyno in the review indicates that. As for 10-12 at the wheels......thats probably very optimistic. 4-5 would be my guess based on playing with T/Bs on my other race cars. Plus who knows what else was on the car to get that 12ps number they claim. Lots of variables but in theory it does have merit.

Best way to make your car crazy responsive is light flywheel and crank pulley.

post up dyno when you get it.

[delusionz]

TB spacers on the other hand actually increase overall plenum volume. My guess the theory is that the MAP sensor is calibrated with the factory plenum volume, u increase the volume and there should be more air in the plenum, more so than the factory ecu recognises therefore this is a very rudimentary way of tuning the A/F ratio towards the lean side, more power is made on the assumption that the factory ECU runs rich just to be safe.

This theory can fail when you take into consideration a tuned exhaust and a cold air intake, which also adds more air (but gets metered correctly on an untampered plenum and throttle body) starts to bring the A/F ratio closer to stoich and the engine close to peak efficiency, the TB spacer will give the MAP sensor false readings and the A/F ratio leans out too much and cause the knock sensor to tell the ECU to retard ignition.

Im talking out of my ass just like everyone else, its all just theory until the dyno charts of before and after come out.

[turnip]

TB spacers on the other hand actually increase overall plenum volume. My guess the theory is that the MAP sensor is calibrated with the factory plenum volume, u increase the volume and there should be more air in the plenum, more so than the factory ecu recognises therefore this is a very rudimentary way of tuning the A/F ratio towards the lean side, more power is made on the assumption that the factory ECU runs rich just to be safe.

This theory can fail when you take into consideration a tuned exhaust and a cold air intake, which also adds more air (but gets metered correctly on an untampered plenum and throttle body) starts to bring the A/F ratio closer to stoich and the engine close to peak efficiency, the TB spacer will give the MAP sensor false readings and the A/F ratio leans out too much and cause the knock sensor to tell the ECU to retard ignition.

Im talking out of my ass just like everyone else, its all just theory until the dyno charts of before and after come out.

You are correct!! For everday street application this conversation is a little irrelevant. Most people never hold there vehicle at high rpms on the street for very long for any problems to occur. Now on the track excessive leaning out could rear its ugly head and cause some problems real quick. My avg rpm on the track is 5k-8k for a solid 6-8 minutes. Then again I am not using this type of modification to get horsepower because as you stated it could have some detrimental affects. I am going about it correctly with a standalone that monitors the wideband and if it gets to lean it compensates.