Why can't we turbocharge a 3s-ge?, Compression ratio related Options

[dudeofchaos]

I know that the 3s-ge engine has a higher compression ratio than the 3s-gte (which I guess means that the pistons' head are thiner right?), but what does it change so that we can't (or shall not) turbocharge the 3s-ge?
Is it because it would (I don't know) be too much compressed exhaust gases for the turbo to hold?

BTW: what does the last number in the compression ratio mean? (Like in 10:3:1)

This post has been edited by dudeofchaos: Jun 26, 2011 - 10:51 PM

[Rusty]

however with the gen 2 3sge, may require you to convert to shim under bucket or shim less, depending on your goals or usage.

ahh thats what it was, the head differences was a different cast. But from what I read, there isn't much difference in strength between the blacktop and ST205 blocks according to glenn booth, which may explain why it was harder to find details of people who where using that block in their ST205.

If you really did want to retain the vvti and couldn't for some reason use the internal feed from the block up to the vvti solenoid, you could make up an external line up to the head/vvti solenoid like the people who build RB30's that want to retain the N-VCT . Also from what I've worked out the cranks are the same between 3rdgen & 4th gen 3sge/gte, redtop and blacktop. The 3sge/3sgte cranks are factory forged, while 5s/3sfe cranks are cast. And the redtop BEAMS rods are the same as the 4th gen 3sgte.

I wouldn't say 'considerebly larger' ours being
Valve diameter In: 33.5mm
Valve diameter Ex: 29.0mm
but being made out of titanium is a nice touch. I came across the same info as you have 3WayStunna, while I was looking for the valve angle difference the beams has, but could not find it.



well apart from the difficulty reasons of installing. the next trouble would come from wiring it all in.