I got some extra cash laying around just waiting to be spent on my car. So I was thinking on puttting a 3S head on my 5S. Has anyone done this before?

Its been done. Try a search under 5sgte.

there's a sticky at MR2oc for this i believe.

i was actually starting to do it and did not have a chance to finish due to me trying to buy property by my house.
i got a fresh rebuilt 3s head ready to bolt on if you want it
i will do 350 shipped for ya! i even got the intake manifold, tvis, throttle body too!
400 shipped and you can have it all!!! you will only need a few more things to get the project done.
i got more than 350 in just parts and machine work done to the head
pm me....i can get a little more detailed.
dg

This post has been edited by DG_Performance: Aug 3, 2005 - 10:37 PM

-DG_Performance+Aug 3, 2005 - 11:34 PM

Sounds nice.

This post has been edited by Boss-Celica: Aug 4, 2005 - 8:27 AM

if you buy it this week i will throw in a new set of head bolts too!
dg

people have done it on camrys... and apparently late year 5sfe's have smaller water jackets than old 5sfe/3sgte.. not sure if 96 is a newer or older version tho...

http://www.toyotanation.com/forum/t8316.html

here it is in a nut shell.
get a 3sgte head gasket if all the holes on the 3s gasket match you are fine, if not you will have-to get some water jacket made.
5s-fe block, crank,and 5s forged pistons, all the other parts come from the 3s-gte= rods, belts ect. the most important thing is to cut the 5s crank to fit the 3s rods ($300) or buy 5s forged rods ($700)after that put the motor back together like a normal 3s-gte

This post has been edited by Punch: Aug 23, 2005 - 11:16 PM

any 1 plan to try it ???

I almost did it but had to stop due to other issues.
you pretty much have it down to what needs to be done,,,, and it is not too hard to do it either.
dg

I know its pretty simple if I do it build another motor 5s bottom end $75-$100 junk yard...
3sgte head $100-$300
it can be done for less than $2K

This post has been edited by Punch: Aug 23, 2005 - 11:18 PM

well, i have the fresh rebuilt head and some new head bolts if anyone wants to pick up where i left off and save some time and money. will be posting it on ebay if none of you guys want it.
actually i got a call from someone that might want me to build it for them afterall so i might build it ....but it wont be going in my car?
i will keep you guys posted on what happens.
dg

sounds good, I might do it also!!!

If I do this I will be the first 1 to have a 2.2 3s-gte in a 6gen????
If so, won't I be making history... LOL !!!

This post has been edited by Punch: Aug 23, 2005 - 11:22 PM

will I get a spot on the front page(Featured Rides) if I do it ?????

This post has been edited by Punch: Aug 16, 2005 - 11:46 AM

i came across this guy selling a 3s head on a 5s block machined and everything he said it has new head studs and HKS cam gears and it's ready to go. his price was $950 i thought it was a good deal.

If you get it for that, make sure thats all good...

With a 3s head on a 5s and HKS cams you could easily get 200hp. I rather do this than a 5sfte. More realiable and powerful. NA > Turbo

hasn't the 5sgte already been built by people with mr2's?

yeah ive been planning on doing the project so yeah i haven't got the money but yeah im thinking crazy about doing it...i might when i get my school loan..been hearing mr2 guys going over 600hp if the head swap.....i want that..would you guys...

I've got the money to do it, I am just not ready to do it. My 5s only has like 87k on it and I wanna mess with it some more. I'm trying to see how much power I can get out of NA.

ok so if i get a 3s head i need to get the rods and have my crank cut and make sure the my 95 5sfe will bolt up to a 3s head and put cams in it and ill will be looking at around 200 hp. how hard is this to do

one thing you guys havent mentioned is how your gonna wire this up and get it to run...it wont run on the 5s ECU, i can tell you that.
>>

-presure2+Aug 17, 2005 - 12:03 PM

That obviusly is true. If a 5s and probably a 3s ECU won't work then what probably would? I am sure some MR2 people have done it and probably found a way to fix that.

Understand that a 5SGTE swap would be no different than a 3SGTE swap. You will have to use the 3SGTE wiring, ecu, and electronics. Also, I will add... the MR2 guys who made 600 some odd horsepower do not do it solely because they have a 5SGTE. Understand that the head only changes the horsepower characteristic... but the power maker is the turbo. If you build up the 5S bottom-end... even the FE head can make that power with boost. Take for example Paradise Racing's drag AE86. 8 second 1/4 mile car with a stock FE head and built bottom-end. A typical 5SGTE build will probably yeild less power but more torque than a regular 3SGTE mostly because of the displacement... the only major difference the head will provide would be the power delivery. The 3SGTE will always have a better top-end because of the 5S block's geometry.

Also know... that sort of power doesn't make a car very streetable or reliable.

so you're telling everyone more displacement more HP???

This post has been edited by Punch: Aug 23, 2005 - 11:35 PM

-Punch+Aug 18, 2005 - 8:09 PM
More displacement = more potential for power... definately more torque... but not neccesarily more horsepower.

-Kwanza26+Aug 18, 2005 - 11:50 AM

Can you explain these two sentences in greater detail please? What are the geometric differences you speak of and why do those differences result in less horsepower for a higher displacement engine?

Theres no replacement for displacement >>. Hes basically saying that a 5sgte will yeild less power than a 3sgte because the 5sgte is still really a 5sfe which was built for economy.

-jgreening+Aug 18, 2005 - 8:48 PM
Rod-stroke ratio. per psi of boost... a 5SGTE will make much more torque than a 3SGTE (because of the displacement), but because of it's poor piston dwell (relatively short rods in comparison to its stroke)... it won't make as much top-end power. It's the same reason why you don't see many n/a 5SGE's. The GE head can help change where horsepower peaks in the rpm band... but the engine's design is against top-end power.

If you compare the 5S rods and the 3S rods... they are almost identical in length. Considering the 5S has .2 liters more displacement... this means the 5S bottom-end is not designed with horsepower in mind. Even with a GE head... this characteristic isn't gonna change too much.

Comparatively speaking... take the 7AFE and the 2ZZGE. Both have nearly identical specs in terms of bore/stroke (82mm bore 85mm stroke for the 2ZZ and 81mm bore 85.5mm stroke for the 7A)... but the 2ZZ is a horsepower engine and is designed with rods, again, nearly identical in length to the 7A even though it lacks the stroke the 7A has. Compared to its (2ZZ) stroke, it has enough rod length to maintain good piston dwell and a stroke ratio to maintain top-end torque/power. As for the 7A... it's a very good design and has good performance potential... hence is why you see more n/a 7AGE's than n/a 5SGE's. Even turbocharged... these characteristics stay with the engine. In the 5S's case... n/a 5SGE isn't gonna be worth while. a turbo 5SGE (5SGTE) is the equalizer, since the turbo takes greater advantage of the displacement.

Am I starting to make sense yet? I'm not saying a 5SGTE is a bad build... it's an excellent build for say... a drag engine... but strictly speaking horsepower... a 3SGTE can match it. Hell... when people start talking about how such and such made 600 horses with a 5SGTE... I'll answer... you can make that much with a 5SFTE if you match the 5SGTE mod for mod. It's all about $$$ when it comes to boost...