AE102 supercharger

[birdie]

I have an 97 AE102 Corolla Seca (with the 7AFE), now i have put a set of extractors on it, with a 2" sports exhaust. It goes all right, but I'd love to give it a bit more punch, so I'm considering supercharging it, running about 8psi max, Piggy-back ECU, FMIC, not sure what S/C though.

I guess I could use the SC12 (from the 4AGZE) but its not designed to be run consistanly, so I'd have to add some extra electronics to control the electronic clutch.

Is there any other options/suggestions?

[mideon_696]

"u could just put the 4agze in there" is what quite a few would say i reckon.

i got the same motor, 98 conquest. have considered this idea also, as a 20v transplant is proving to be too costly. most pple in the states go the turbo route with this motor.
u can get the sc12 for like $300-$350, and the cooler u can get pretty cheap 2nd hand also. so makes for a good bang for buck solution. 8psi? standard the motor can take 11psi.
supercharge it i say!

i got a question too. do u really need the piggy back ecu? can ya get away without it?

[sw20r]

You can modify the sensor to the clutch to make it run constant. A piggy back is a good idea on a stock motor for the reason being that the fuel maps are lower the F/I.

and the injectors on a 4A/7A are about 150-180cc, GZE on the other hand if I can remember correctly is 365 cc/m (memorys gone bad). You could get away with raising the fuel regulator and boosting the fuel pressure.

Depends if you want the motor to last or just a cheap blast of power for as long as the engine holds. F/I motors do need good timing control

[birdie]

Can the SC12 handle running consistantly?

Yeah I'd need a Piggy back to remap the A/F ratios and stuff like that (I'm not sure all what would need to be tuned, thats why I'd get it professionally tuned)

Would the GZE injectors fit the 7A? would the standard fuel pump be sufficient?

I definately want it to last a long time, I don't want to loose the Toyota reliability

11psi? where did you hear that? I heard 8psi was the max, but i'd have to get it done by a tuned professional, so they now what it can handle.

[sw20r]

It depends on the age of the unit. they are pretty old now so you have to be prepared to go through a lucky dip and get the right one.

try do some research on google about the sc12. the main thing is to watch out for is boost pressure or heat which can cause the rotary seals to blow.

[birdie]

is there any better superchargers i could get? such as centrifugal chargers?

[limbo]

If i were you i'd got Turbo, if you want more power. The supercharger puts alot of strain on the crank, and where you have a small engine it isn't that efficient. Turbo uses only the exhaust fumes so its just recycling. If you want to go suercharge get the 4GZE and do it properly that way at least the unit will be working properly.
btw. the 4agze suerpcharger is alway on normally. I have seen the switch that turns it on/of installed though

[mullett]

The SC12 is run by an ECU controlled trigger, it runs when the ECU decides the load is needed. You could rig it up to a vacuum controller or a in-cab switch...turbo doesn't exactly recycle the exhaust fumes, you've gotta remember that it's restricting the hell out of the exhaust, it's run by the pressure caused, hence it's loading the engine in a different way...

[oldcorollas]

doesn't exactly recycle the exhaust fumes, you've gotta remember that it's restricting the hell out of the exhaust, it's run by the pressure caused, hence it's loading the engine in a different way...

zactly... what people never talk about is the kW LOSS from having a turbo in the way... how much power does it take to drive it??

there is a better SC, twinscrew/lysholm.. it's a little exxy for the outlay, but damn they are nice.

[mullett]

Yeah, there are a few types around for sure. Worst I think are the Paxdyne (?) style ones, which are basically half a turbo on a belt. They still lag, because of the speed they need to build boost, and they make minimal power increases. *rant*
Superchargers are basically a very effective 'replacement for displacement', because you get all the advantages of a bigger motor, without the lag and odd torque curves of a turbo motor. Kind of a no-compromise thing.
Everything takes power to do work, and there's no such thing as a free lunch. You want to compress air? Sure, but it'll cost you. Of course you get more power than it costs at the end of it, but no matter what you do it has to get energy from somewhere. Newton and all that.

RM.

[mojo_type]

sc12 is belt driven running constantly when a manifold pressure sensitive switch engages the clutch on the pulley and effectivly "turns the boost on"

you will get 9-10 psi from a late sc12 and little less from the earlier ones, 1 - 2 psi less
if you put a bigger pulley on it like a 175mm one from nevo or alike it will bump it up 13 or so psi anything after that go turbo

spin them too much tho and they will melt rotors
but theres storys of a dude in dubai or some place runnin 30 psi reliably so yeah

mine is 9psi but will go 10 on a cool night never had a problem with it

they say its not hard to get 100kw per litre with a 4agze with bolt on mods so see what the 7afe will put out after all your mods and see if its cheaper and easier to get a 4agze