Turboing an 3SGE engine Options

[DZracer978]

Does anyone here has successfully turbo charge there 3sge engine, How much horses can i get if i do get one, and what can i get them? Thanks

[Zimluura]

i'm no expert but i read about this.

http://www.6gc.net/forums/index.php?showtopic=1311
under 3s-ge

"Some people may think that they can swap this engine into their car and later turbocharge it, but this is not a great idea. The internal components on this engine and the 3S-GTE are drastically different, so to make this engine turbo-ready, it would require the use of internal engine parts to strengthen the engine. If you want a turbocharged engine, it'd be much, much easier and cost-effective to simply drop in a 3S-GTE in the first place."

[Micky_lovescelic...]

Does anyone here has successfully turbo charge there 3sge engine, How much horses can i get if i do get one, and what can i get them? Thanks

DZracer987,

Techhically yes, you can equip the 3SGE with forced induction. It depends on what market we are talking about, is your vehicle a ST202, ST203, ST204, as well
which variant / generation of 3SGE you have. The 3SGE has a much higher compression ratio, then that of the 3SGTE. Technically speaking you could run a low pressure
forced indcution set up. However there are both mechanical limits and as well engine-management aspects that need to be kept in mind and in check.

It is important to understand more about what you are attempting to achieve. You want to have response, and a flexable powerband, having some sloppy power creator
might seem ideal, but it also has adverse consequences. Often times huge and undesirible compromise.

Why is it that you feel you need a turbo? The 3SGE is very capable. Last but not least, having a reliable power-plant is more important then un-reliable and mildly faster.
Remember what is pragmatic for a race car is not always pragmatic for a road car.

Regards,
Mick

[3sgeR]

a friend of me has supercharged it with an rotrex supercharger it runs with 0,5 bar boost and produced mor then a gt four stock but the tyres cant give it to the ground.

[match220]

I had to get another head a few years ago, the head I have now is a 3sge head, BUT I put 3sgte cams with new guides and turbo springs. When I tested the compression of the stock 3sge springs vs the 3sgte springs I believe the non-turbo 3sge springs were 40 psi, and the turbo 3sgte springs were 80 psi (if my memory serves me correctly after 5 years). I'm positive that the turbo springs are 80 psi, and the non-turbo ones were lower by a lot, I just don't remember exactly how much. With all of that said, turboing a 3sge head has potential for valve-float since the springs are softer, which means lower high-rpm power. The 3sgte springs were also a higher psi than the Ferrea dual-coils that I had bought at the time. The stock turbo ones are pretty good if you can get some used ones with some stock turbo cams.

EDIT: you know what, I forgot to mention that mine is a Gen III.

This post has been edited by match220: May 10, 2012 - 7:26 PM

[malpaso]

I talked about this here already.... in 2007 I needed to make choice: turboing 7AFE or swap 3SGTE. Finally won turboing 7AFE. It was great choice. I loved my 7AFTE. In 2009 I needed to make another choice. Rebuild 7AFTE to hold more power or swap 3rd gen 3SGE and turbo it. I went 3SGE turboing way (I already went through similar process with 7AFE right?) ...and it was the worst decision of my life! 6 month ago I wrecked my old ST car and bought ST205 (only sensible way to go).

The point of this story: the best way to have turbocharged 3SGE is swap 3SGTE.

As a prove I can share with story of a guy who tried to do the same (turbo 3rd gen 3SGE) and failed as well. From I know it took one year to build it and after like 1000miles he literally melted turbine blades and broke engine (fail of mechanic or simply turboing of 3S is harder than it seems?). He decided to rebuild it under new mechanic again but honestly I did not hear anything about he successfully riding his car now at all...

[match220]

I talked about this here already.... in 2007 I needed to make choice: turboing 7AFE or swap 3SGTE. Finally won turboing 7AFE. It was great choice. I loved my 7AFTE. In 2009 I needed to make another choice. Rebuild 7AFTE to hold more power or swap 3rd gen 3SGE and turbo it. I went 3SGE turboing way (I already went through similar process with 7AFE right?) ...and it was the worst decision of my life! 6 month ago I wrecked my old ST car and bought ST205 (only sensible way to go).

The point of this story: the best way to have turbocharged 3SGE is swap 3SGTE.

As a prove I can share with story of a guy who tried to do the same (turbo 3rd gen 3SGE) and failed as well. From I know it took one year to build it and after like 1000miles he literally melted turbine blades and broke engine (fail of mechanic or simply turboing of 3S is harder than it seems?). He decided to rebuild it under new mechanic again but honestly I did not hear anything about he successfully riding his car now at all...

Mine isn't a full 3sge, the block is 3sgte and the head is 3sge with 3sgte cams and valve springs.

I would think that as long as he lowers the comp ratio of the 3sge he should be fine. Higher comp ration creates more heat and could account for the melted turbine blades. I would also change the head internals just to be safe. But for all of that trouble, why not just get a 3sgte instead.

[malpaso]

Mine isn't a full 3sge, the block is 3sgte and the head is 3sge with 3sgte cams and valve springs.

I would think that as long as he lowers the comp ratio of the 3sge he should be fine. Higher comp ration creates more heat and could account for the melted turbine blades. I would also change the head internals just to be safe. But for all of that trouble, why not just get a 3sgte instead.

That 3SGE I mentioned was equipped with lower compression pistons (the same as for 3SGTE) so it was not just about "bolt turbine on". Just for info...

[match220]

That 3SGE I mentioned was equipped with lower compression pistons (the same as for 3SGTE) so it was not just about "bolt turbine on". Just for info...

I doubt this will happen to me, I had all of the internals of the 3sge head either changed to aftermarket or replaced with stock turbo parts just to be safe. There had to be something else going on with his build.

This post has been edited by match220: May 11, 2012 - 4:09 AM