5sfe head swap? Options

[momentai99]

Hey guys, I have a 5sfe in my celica. it's a 94 gt and I was looking for a little more, how should I say oomph out of the engine.It's decent but not good enough yet. My other car is a 350 horsepower camaro so understand my need for speed.
I've been told I can either do a head swap although with a pre 97 model that wont work? thats what I heard.
I'm not interested in a v6 swap. The only other thing I can think of is a 3sge or 3sgte swap?
I have a 5 speed tranny and I can get the stuff for less than a grand (have a buddy who runs a shop).
So its a matter of choosing and deciding the easiest option. But that 3sgte with the twin entry turbo sure sounds nice....


Also in the 5sfe can I port and polish the heads for less restriction? I've been told thats where the main problem is with the engine.

[Special_Edy]

Get a 3S-GTE/3S-GE head and swap it on so you have a 5S-GTE/5S-GE. Its been done and the specifics are documented somewhere on this site. I also believe the turbo/exhaust/intake on the 3S-GTE can be mated to a 5S-FE to produce a 5S-FTE
They are both S series engines so depending on the years the heads are interchangable with various levels of modification(maybe just the headgasket on certain swaps)
The F in 5sfe stands for fuel economy, the G in 3sgte stands for performance.
It isnt about the size or shape of the cylinderhead ports as much as it is about the angle of the valves. I believe the 5sfe has a narrower head and the valves are closer to vertical, whereas the 3sge/gte has the valves set at a wider angle that flows better.
Also it should be noted that the 5s block is basically a 3s that has been stroked from 2L to 2.2L. Being oversquared should make the 5s more prone to produce torque than the 3s at the expense of some rpms, though overall a 5sgte would be more powerful than a 3sgte because 'there is no replacement for displacement'

This post has been edited by Special_Edy: Jan 24, 2013 - 2:07 PM