3SGE and 3SFE, lets get our heads together

[almc2242]

Looking through the net regarding the 3SGE head. I found this article on the matching of these two cool setup. But it might be a little tricky, but not imposible.

Cylinder head differences.

Although the block appears identical, the bolt pattern is definitely the same, the heads have a different configuration. In the 3SFE, the combustion chamber is partially in the piston crown, whereas in the 3SGE, the pistons are flat topped with valve reliefs, and the combustion chamber is totally in the head. This would prevent the fitting of a 3SGE (higher flowing) head onto a 3SFE block, without changing the pistons. The compression ratio would be too low to be satisfactory, and would counteract any gains in flow. It is not known if a compression increase in a 3SFE could be achieved by using 3SGE pistons. The resulting compression gain might be too high to run on readily obtainable fuels. The piston pin fitting is different, also.
The cambelt crankshaft pulley tooth pitch has been checked and is the same on the 3SGE & 3SFE, but different on the 2s engine.
The 3SFE and 3SGE crank/rods are different, despite the same stroke. The 3SGE piston pins are fully floating, whereas the 3SFE are press fit.
The actual block on both engines appears to be identical, and therefore interchangeable.

Which means it would have too low of a Compression Ratio. But, if I install a turbo kit, would it work?

[Toysrme]

whereas in the 3SGE, the pistons are flat topped with valve reliefs, and the combustion chamber is totally in the head.

Just another reason for me to call my motor a 3vz-ge Learn something every day.

[fredk]

the fe versions bottom end isnt strong enough to handle much boost

[almc2242]

I guess the first thing that I should determine is if this head will fit on my 3SFE block. Does anuone know. The head is from a 86-89 Celica I beleive. I have a 1997 3SFE. Any advice?

[fredk]

if it fits, your going to need the wiring harness and the ecu too

[almc2242]

Originally Posted by fredk

if it fits, your going to need the wiring harness and the ecu too

What Harness?

[Pineapple]

Complete wire from ECU to engine. Sell the head and get a complete engine. Unless you don't mind playing around for a few months trying to find out what works.

[almc2242]

Ok

[MIGHTY]

Ive done the swap , i got my head port and polished /3angle valve job,milled /and machined,custom cams for a longer lift, but i own a 86-89 celica as far as putting it into a 97 thts going to be tricky.......good luck

[almc2242]

I guess I'll just install a 3SGTE when the 3SFE explodes. I'm using 7 pounds of boost. But i have a heavy right foot. It's a question of time.