Quote:
Originally Posted by shadowkaze
Invest money in a good grounding system. Most people won't mention it but it will unlock horsepower you never knew you had. Also get a good AM ignition box to give it good spark. And you can do a lot of things to a 5sfe you can do many things to any engine. Also bigger fuel injectors always add hp.
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1) Grounding... upgrade "The Big Three" is a good idea.
2) AM ignition box. NO. Stock ignition components is plenty to make 400+whp. Why would you upgrade it on a stock motor?
3) Bigger fuel injectors. NO. NO. NO.
The car runs rich STOCK.... why the HELL would you want to make that worse and lose further fuel economy AND lose power? The stock ECU CANNOT compensate for larger injectors.
Anyways......
OP, what turbo do you have. A stock turbo could mean pretty much anything. If you want to use it on your car, then start reading. There's enough tutorials floating around this site, and especially Celicatech that ALL of your questions are already answered if you care enough to take 10 minutes max to find them.
As for n/a, bolt on mods, here you go:
1) headER. You have ONE. So you buy a HEADER. You can get the "Surewin" Ebay header which seems to be a HotShot knockoff, and seems to perform well. Or you can grab a late model 96+ Camry 5sfe header which is also a 4-1 style. Or you can grab an 88-89 Celica GTS 4-2-1 header. Your choice.
2) Intake. Make one. I have a modified Civic intake on mine, works just fine. Although... you'll probably see better gains just with stock intake piping, with a K&N filter, as it is a true "cold air intake" STOCK.
3) Exhaust. Custom. 2.25" mandrel bend or 2.5" crush bent. All the way back to a muffler/fart can of your choice. DO include a cat or a resonator so you don't sound like a beehive.
At this point.... you MIGHT run a low 16 quarter mile, assuming you have a manual tranny, you know how to drive, and your car is healthy. SLOW.
So... let's move on.
4) Advance your timing to 15-17 degrees BTDC, and run 92-93 octane.
5) Run 1 step colder spark plugs
6) Upgrade your ignition wires.. WIRES ONLY.
And now we move into the more involved stuff:
7) Clutch/flywheel. Lighter flywheel improves engine response, less intertia to overcome.
8) Shave your head. You can take up to .040 off your head to raise the compression to gain more power, and still stay within the limits of your stock ECU. VERIFY FIRST THAT YOUR HEAD HAS NOT BEEN SHAVED BEFORE.
9) Get headwork/cams. Port/polish your head, rebuild it, get bigger valves (2jzge valves fit with fairly minimal modification), contact Webcams about regrinding your cams for more lift/duration.
At this point, you'll need some way to tune your car, DO NOT skimp here. If done properly, you should be around 150-155whp at this point, with a HUGE powerband, and a buttload of torque. Not bad for an unopened bottom end. You may also want to think about doing something with throttle body and intake manifold at this point.
10) Build your bottom end. You can have your crank machined to accept 3sgte rods to get rid of the main weak point of the 5sfe bottom end that prevents it from revving: the rod bolts are TINY. So.. machined crank, 3sgte rods (or just good aftermarket rods, stock crank), and high compression custom pistons, and you're in business.
This is really THE recipe to make a STRONG 5sfe and have it still be a 5sfe.
Spray on top of it if you like. Or just spray your stock motor.
If you want a turbo write up, go to Celicatech and read their stickies in the forced induction forum.
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