3S-FE Intake Manifold on 5S-FE, up to 40 hp?? specifics.... Options

[Silver94CelicaOw...]

So a while back, this was sorta brought up but i want more specifics on exactly how to do it....I think its a good performance option for the 5s-fe if its true. I remember 1bwilson said that you could take the intake manifold off a JDM 3s-fe and a 60mm throttle body and you could get gains of around 40 horsepower. I've searched everywhere online for more info on it, and havent seen much of anything. I would just like to verify that claim, and if its true.....

a.) Exactly what parts do you need to get it to work? Would the manifold be from the Curren's 3s-fe??
b.) Would about a 40hp gain be reasonable to expect?

Just a little more knowledge on this would be greatly appreciated.

[Kwanza]

Lemme give you my 2 cents...

This mod sounds more like a dreamer mod than an actual one. The 3sfe head is nearly identical to the 5sfe head and assuming the intake manifold swap will allow for better induction, it's very hard to believe that it'll give 40hp. I actually don't think the 3sfe intake manifold is any better than the 5sfe...for one, the 5sfe is a larger motor and makes better torque than the 3sfe, and two, the 3sfe isn't a performance motor, so if the induction can't be so much better that you'll need to upgrade your fuel injectors, to match the air induction.

Also, a note on practical engine mods...
Assuming the intake manifold swap is done... the engine won't automatically suck in more air because it's a larger ported manifold. It'll suck in enough air to operate at the most economical level. Intakes and exhausts work because they relieve stress and restriction that the stock equipment come with... because stock is designed for quietness and economy. Let's put it this way... if you can do forced induction through a stock intake manifold... then obviously it's not that restrictive...

I dunno...experiment... but it sounds like a dreamer mod to me... kinda like the fabled 7AGZE hybrid http://www.toyotacelicaonline.com/celica1/7ahybrid.htm

This post has been edited by Kwanza: Sep 15, 2003 - 7:29 PM