sc14 > 4agze ???

[lucasthefallen]

ok im thinking about using a sc14 ( simply because ive got one sitting here ), but have a few questions first.

1. is it direct bolt on, eg same mounts same belt etc etc? if not how much has to be modified to fit it?

2. will it still run the standard 8 psi? ( i want to get an evil si kit, but dont want to run anymore then 14psi )

3. what sort of beifits are there from using it over the sc12?


thanks in advance for any advice!

[TRD_ZERO]

NO it isnt a direct bolt on you need to modify how it mounts on the manifold and i you will have to run an aftermarket computer. Speak to 20vrollaboy he had a 4agze with sc14 on it and he stripped it so he should have the mounts already modified for the sc14 forsale.

[tsoob]

you want to sell the sc14?

[20v_rollaboy]

Sorry I have already sold my setup

I do have some pics of it though if you're interested?

[lucasthefallen]

why will i need an after market ecu?

yes please pictures would be great, my email is projectsw20@hotmail.com, how difficult/complicated were the mounts to make?

[barryogen]

why will i need an after market ecu?

running more boost the engine will be lean, and you will bust pistons.

I guess you could change the pulleys so that the SC14 was only providing 8psi, but it would probably make some other bits of the map wrong.

[lucasthefallen]

why will i need an after market ecu?

running more boost the engine will be lean, and you will bust pistons.

I guess you could change the pulleys so that the SC14 was only providing 8psi, but it would probably make some other bits of the map wrong.

i understand this, but with an evilsi kit, it will run upto 14psi on a sc12, no other mods needed. im confident that a standard 4agze would run 14psi on 98 fuel without any problems.

what boost will the sc14 run if i just bolted it on, with standard 4agze crank pulley?

i was wanting to avoid a stand alone ecu, was looking more at just an afc if possible.

[barryogen]

to figure that out correctly you'd need to know the efficiency of both SC models at whatever RPM you're running them at. Oh, and the efficiency of the piping and IC that it is all running through.

for a rough guide though, assuming they are identical barring their size...(not a good assumption to make)

.2L more per revolution than an SC12, so 16.6% more boost.

Although, seeing as each revolution is only .8L not 1.6L in a 4age, maybe that should be 33% more boost... which seems a bit more likely.

so, err, 12lb

from memory, they are a bit more efficient than the SC12, so it may be a bit more, and the inlet temps will be different.

be careful of hitting their rev limit too, the SC12 allows up to ~12000RPM, whereas the SC14 is only ~10000RPM, so you may have to re-gear it not to hit those limits.

[2LTR Rona]

why will i need an after market ecu?

yes please pictures would be great, my email is projectsw20@hotmail.com, how difficult/complicated were the mounts to make?

From my brief talks with Mr Revhead stock ECU should handle the SC14 fine, one thing to note though, if you do not do the ABV mod, there is no point in swapping to the SC14 as it will still vent @ 8psi (this applies for both the SC12 & SC14)

Have a look at this link http://www.members.westnet.com.au/adsport/sc14fit/

It's probably not applicable in terms of the vechile you are thinking of putting it in to, but will shed some light on other possible issues / challenges you will run in to.

A downloadable version of that link is available here
http://www.members.westnet.com.au/adsport/sc14fit/ SC14fitting.doc

[soopachargen]

i had the famous sc14 kit on my fx and it was making about 14psi, i cocked up my timing when i put extractors on the car and ended up cracking the ring lands on 3 of the 4 pistons. Before the CAS adjustment it was awesome to drive though. It lit up in 4th on me one day on dry tarseal going up a hill.

and 2ltr rona... u have to remember that 8psi on the sc12 is gonna be less airflow than 8psi from the sc14 due to the blowers larger displacement

[.:O4AGTZ:.]

from what i hear its a worthwhile upgrade. there is information on it, you just have to look in the right places, and it sounds like there is heaps of custom fabrication but then if you actually look at it it isnt an extreme amount.

is a 4agze with an SC14 on factory ECU a reliable daily driver tho? always wanted to do it but my gtz is my only car...

[Crampy]

It's probably easier to just sell the SC14, then chuck a big pulley kit on the SC12 and then upgrade the intercooler to something better. I'd suggest a water to air jobbie from a Subaru or Celica GT4. Or, just go for a front mount (not too big though!) I'd say even a stock pulley with a upgraded intercooler would give a nice gain. Just some Bluetop cams in it as well, if you can find some cheap cheap.

From memory a SC14 and a big pulley kit can boost up to 18psi. You don't really want that, the air would be too damn hot!

[Scrunty]

Guide here, might shed some light on what needs changing:
http://www.members.westnet.com.au/adsport/sc14fit/

[soopachargen]

4age throttle body is supposed to be a pretty decent upgrade aswell...

[Bazda]

i've done 2 SC14 convesions now .

pretty easy conversion, but you need the engine out to do it.
As we still didnt take a template of the mounts lol.

Costs around $500 ish dollars for the conversion kit.
This includes fabricating mounts, swapping pulleys and making spacers to suit. Fabricating the piping work to the throttle body. Moving the throttle body and making more mounts.

[soopachargen]

u keen to do a rwd one with an NA inlet manifold baz?:P

[Bazda]

u keen to do a rwd one with an NA inlet manifold baz?:P

Yea easy!

[soopachargen]

mounted on the exhaust side?

[barryogen]

Why add a bit(lot?) more heat to an already hot compressor?

[lucasthefallen]

the link postage above i think is quite a good quide. so i've decided to fit it, as im handy with the welder and grinder. if it works it works, im not overly stressed if i have to pull it off and stick the sc12 back on.

i thought about a w2a set up, but quite simply cant be bothered running all those waterlines and sorting out some sort of radiator. i will probly just get a thicker a2a i/c and put a big fan on it.

i will mount the sc14 and run it first, and see what sort of boost its running, if its 14psi or there abouts i wont bother with a pulley kit.


will post pictures up of my progess in my project thread,

thanks for your adive and opinions.