I think to much some slap me, 3s < 5s Options

[macavely]

Ok so toyota has the 3s block which is a great one we all know this .. but see as its te 3th make of the S block wouldn't the 5S be a better block ? ... why would toyota make the 5 th version of the block weeker then that of the 3rd? .... and while at it why would the internals be weaker ? it just would make any senne for toyota to not move up .. and keep there "toyota is for ever " thing going ... and then why would they put the 5S in so many cars and in the one that they sell the most ? unless it can take abuse like a pro ? then i'm thinkin my eingine has 221,XXX K miles on it and she is still strong ... and doesn't burn oil ? now what i want to try is doing is fine and camary with the SS and boost it the right way and see how much before it will blow up ....

[Batman722]

[presure2]

mac, some of your posts are SO hard to understand man!! ...if your trying to say the 5s block is better then the 3s...sorry, i think your wrong man..lol

[macavely]

lol na i'm not trying to say that.. i'm saying for what it is designed for its better then the 3s .. 3s for performance .. 5s for everyday economical use ... ..

This post has been edited by macavely: Jun 17, 2005 - 8:09 AM

[presure2]

ooohh ok...well, you know, the 3s still kinda gets decent milage cosidering its a turbo motor ect..

[forkee]

maybe the higher number is worse (less performance, better mileage), eh? the supra is a 2j, then the 3s gt4, celica gt is 5s, st is 7a.

edit: oh and dont forget the 4a, fitting conveniently in the middle

all u need now is a 1 and 6

This post has been edited by forkee: Jun 17, 2005 - 3:04 PM

[FallenHero]

1MZfe. it's a 6 cylinder, but...

[SlowCelica94]

production costs

[Boss-Celica]

If lower the number, better the engine, How could a 4age be better than a 5sfe, or a 1zz better than a 2jz?

This post has been edited by Boss-Celica: Jun 17, 2005 - 5:10 PM

[orvillescelica]

i think its jsut the way they number the engines. You shouldnt think of it that they are always trying to improve on the engine. When they are, they create the 3rd gen 3s vs. the 2nd gen 3s.

When they 5s and 3s, think of it as the 3rd time they have used the s block and the 5th time they have used the s block. Although they were created using the same block, they were developed with very different requirments in mind. The 3rd time they used the s block as a base (3s) to start on, they requirements were performance and the ability to handle turbo pressures. The 5th time they used the s block as a starting base (5s), their requirements where fuel economy, long life, and cheaper production.

[BLADDER_MASTER]

Actually, from what I've read on MR2OC.com, the 5S block is stronger than the 3S block. Also I believe the crank is really tough and can be used to upgrade the 3S from 2.0L to 2.2L.

[Galcobar]

The block is determined by the second digit in the engine code: S block, M block, etc.

The preceeding number is the generation of the engine using that block. The 5SFE is therefore the fifth engine type to use the S block.

The reason the 3SGE is better than the 5SFE has nothing to do with the block per se. It is the head geometry, reflected by the F or G. F is a narrow valve-angle head aimed at producing a more torque-oriented engine with low-end power for drivability and fuel economy. The G head is a wider angle, encouraging higher RPMs and thus higher HP peaks, with a greater overall output.

The internals in the F-head engines are always lighter than in the G-head engines because they don't have to handle as much stress and, being lighter, encourage fuel economy. They last just as long as the internals of a G-head engine because their lighter build is matched to a lighter load. This would be why a 5SFE can never match a 3SGE's potential, particularly under boost, even though it has greater displacement -- it would break.

I would, however, love for someone to explain how replacing a crank increases displacement, since it's the size of the combustion chambers contained in the head which determine displacement.

[forkee]

lol

[Andason]

i knew right away before i looked at the poster that this thread was mac's

[BLADDER_MASTER]

I would, however, love for someone to explain how replacing a crank increases displacement, since it's the size of the combustion chambers contained in the head which determine displacement.
[right][snapback]301030[/snapback][/right]

http://www.mr2oc.com/showthread.php?t=7144...stroking+3s-gte

[Galcobar]

Changing the crank is not stroking the engine. Stroking the engine requires changing the crank, but that's only one part of essentially redesigning the engine internals.

[MonsterBOX]

if toyota made a 5sgte it would be better...5s block is larger

[Consynx]

IF, correct...
btw, using those numbers to compare different series is kind of tarded

i think what Mac was getting at was staying w/in the Series.
3s-ge
3s-gte
5s-fe

if you want to get into that try
1zz-fe
2zz-fe

1jz
2jz

i think there's a 1jz at least :\

anyways, no more input, just want to read.

[BLADDER_MASTER]

IF, correct...
btw, using those numbers to compare different series is kind of tarded

i think what Mac was getting at was staying w/in the Series.
3s-ge
3s-gte
5s-fe

if you want to get into that try
1zz-fe
2zz-fe

1jz
2jz

i think there's a 1jz at least :\

anyways, no more input, just want to read.
[right][snapback]301576[/snapback][/right]

Well theres no 2ZZ-FE, although theres a 2ZZ-GE. And yes there was a 1JZ-GTE.

[Consynx]

ah, so they changed the f to g, didn't know that...thought it was still f even though the vvtl-i was introduced and another 40hp squeezed out of the same engine.