st205 vs st215 3sgte

[aus jd 2703]

But 215 has week rods. Much over stock and they will need to be replaced but the coil on plug with crank angle sensor will really make for a neat install and are more ideal for after market ecu. The 205 top mount is only good for about 3-400hp and isn't overly good for street. It's more for sprints. There are rumors that 215 is the strongest block but I havnt seen proof. Side feed manifold is awesome for a fmic. Newer motor but if you planning any more than 300whp it's not gonna matter as ull need rods pistons etc. given its in a mr2 the wta maybe your best option. I've got a 205 jap spec just intake done running 15psi with a stock exhaust it's making 216 awhp in a gt four so their not a bad motor. I've got a mate running a 215 motor with exhaust and intake I believe a front mount maybe about 13psi making 213awhp same dyno same day. So difference is negligible.

[Celica RA45]

only taken you 5 years ,also not many pics of that engine ,then found out was only a 205 turbo head with out disy

[RONA]

But 215 has week rods.

True they don't like detonation but Norton on here is making 270awkw on an unopened motor with proper tuning. Mine copped 18 psi daily for 18 months with the standard turbo setup with no issues once again an ecu was fitted and tuning done. MOst of the stories I hear of blown motors are a result of someone upping the boost with the standard ecu still running the show.

[MWP]

The head is otherwise the same as the ST205.

Nope, its not.
There are a few important differences.

[jfallen]

Nope, its not.
There are a few important differences.

True enough Mark (and you'd know building your 5S hybrid,) For example ST205 cams are unsuitable for an ST215/45 head due to the replacement of the Dizzy with a CAS. I was referring to the combustion chamber/valve angle/port design. The 'slight' changers here are evolutionary rather than revolutionary (which they were on the Redtop BEAMS.)

JA.

[MWP]

The combustion chamber is different. It has a different shape for better pressure recovery.
The ports are also different. They are cleaner (better machined) and have different intake valve angle grinds.

[jfallen]

I stand corrected

[MWP]

Who knows how much of a difference those changes actually makes though...

[jonathan yee]

True they don't like detonation but Norton on here is making 270awkw on an unopened motor with proper tuning. Mine copped 18 psi daily for 18 months with the standard turbo setup with no issues once again an ecu was fitted and tuning done. MOst of the stories I hear of blown motors are a result of someone upping the boost with the standard ecu still running the show.

this makes me feel a little better, as the std 205 bottom end (has cracked piston) in my st165 is coming out and being replaced with my spare beams bottom end (same rods as caldina IIRC) but i will also be installing a haltech PS1000, so hopefully it'll cope fine with 16psi from a disco spud?

and before someone tells me the pistons are wrong etc, they sit 1mm below deck height in the beams, so with a STD 205 HG CR will be around std gen3 spec of 8.5:1.

[Classique71]

block cylinder linings on the gen4 is definantly thicker , seen the proof with my own eyes . A good swap would be gen4 block with the rest of the rotating gear being st205 derived - much stronger pistons and rods factory. Side intake manifold is definantly better.

I will have to look at the fuel rails - i have a caldina side feed intake but i havent investigated wether the 205 rail will mount to it as yet ..

[RONA]

By the time you build a dina block with 205 internals you may as well just throw Carrillo rods etc in it like I did. Mine is still using a factory fuel rail albeit modified etc and it is supporting 350awkw.

[MWP]

I will have to look at the fuel rails - i have a caldina side feed intake but i havent investigated wether the 205 rail will mount to it as yet

Fuel rail mounts to the head, not the manifold.
It'll fit ok.

[jonathan yee]

you have to do some grinding to the caldina manifold to clear the st205 fuel return line.

i'll have pics later when i remove the engine over the next few weeks.

[jfallen]

By chance does anybody know the stock fuel injector size on the Caldina's? I've got a feeling it's 540cc, but not sure?

Cheers
Jordan

[MWP]

That they are.