ST185 with CT20B? Options

[reko]

Will a 3sgte ST215 with a CT20b from a ST205 be as powerfull as a stock ST205?

If not, what else will I have to change?

[95CelicaST]

the 4th Gen (ST215) 3S puts down more power than the 3rd Gen (ST205) right out of the box.

[devilsden97]

Will a 3sgte ST215 with a CT20b from a ST205 be as powerfull as a stock ST205?

If not, what else will I have to change?

No i will not be

the 4th Gen (ST215) 3S puts down more power than the 3rd Gen (ST205) right out of the box.

^ that doesnt answer his question.

[95CelicaST]

it does answer the question. He wants to know (from what I understand) if a 4th gen 3S with a ct20b installed will be as powerful as the 3rd gen 3S with the same turbo.

My answer was that the 4th gen is faster right out of the box... no need to change the turbo.

[devilsden97]

it does answer the question. He wants to know (from what I understand) if a 4th gen 3S with a ct20b installed will be as powerful as the 3rd gen 3S with the same turbo.

My answer was that the 4th gen is faster right out of the box... no need to change the turbo.

title says st185 with ct20b i figure the st215 is a typo

[lagos]

a ct20b on an st185 will give you very similar power levels as the st205. the only thing the st205 would have on you is a more aggressive exhaust cam. you can put a single cam gear on the exhaust side and retard it by 6deg, and get similar or better performance.

[Supersprynt]

the 4th Gen (ST215) 3S puts down more power than the 3rd Gen (ST205) right out of the box.

Hardly, 15hp. Intercooler on the ST215 isn't nearly as good as the ST205. Power difference can be chalked up to increase in compression. ST205>ST215 IMO.

This post has been edited by Supersprynt: Sep 28, 2007 - 8:22 AM

[alltracman78]

Not to mention the 4th gen 3SGTE has the turbo exhaust housing and exhaust manifold as one piece.
You will have to make some type of custom manifold IIRC to fit the CT20b on it.

[reko]

a ct20b on an st185 will give you very similar power levels as the st205. the only thing the st205 would have on you is a more aggressive exhaust cam. you can put a single cam gear on the exhaust side and retard it by 6deg, and get similar or better performance.

Damn i meant ST185 not ST215 but thanks cuz ur the only one who really answered my question hahaah!!

[Insanity-74]

a ct20b on an st185 will give you very similar power levels as the st205. the only thing the st205 would have on you is a more aggressive exhaust cam.

I`m gonna have to disagre with that one I`m afraid, simply putting a ct20b onto a 185 will do hardly anything to the power of the 185. It would however give you a bit more potential. You would have to crank the boost up to st205 levels (0.9 bar), then you would have to think about changing the crap 185 head gasket for a metal st205 head gasket. there are many subtle differences between the st185 and st205`s. The 185 inlet system is crap with the afm, the cams are less agressive, the ECU map in a 185 is less agressive the head dosnt flow quite as well....the list goes on.

To get a 185 to 205 levels you would have to get a new ECU such as a Blitz Access ECU or Power FC / Link or even wiring in an st205 ECU. bigger injectors from an st205 would help things out alot (dont go too big though as an under used injector can be just as bad if not worse than an over used injector), a boost controller of some sort, get rid of the AFM, and of course the turbo.

Then you should think about getting rid of the useless interwarmer from the 185 and fitting either a front mount or a chargecooler from an st205....then you might start to show power figures around the level of an st205.

[lagos]

^2nd gen motors with just a ct20b turbo (and a fmic), can make around 270-280whp with a boost controller and an safc. thats pretty much what you would get out of a 3rd gen.

[Insanity-74]

Its not as simple as just turning the boost up though...thats how engines go bang leaving people with expensive rebuilds, if you dont do the back up/prep work to enable your engine to run at higher stress levels then expect things to go wrong in not too long a time. But your list is heading in the right direction...its gone from swopping a turbo, to adding a FMIC, Boost controller and an safc....include the head gasket replacement and I recon I`d agree with you. you would be pushing the limits a little bit but you`d be getting there.

[lagos]

The head gasket will only go, if you are running into detonation issues. As long as you keep an eye on knock, the stock one does just fine. A lot of mr2oc guys have made more then 300hp on the stock HG, without problems.

Don't get me wrong, the 3rd gen is more refined, and if you have the option, just go with that. But there isn't anything about the 2nd gen that is that much different.