Compatible Turbo Components

[vex]

For the stock S4/S5 turbos are there any compatible components that can replace the stock?

I'm aware that the compressor housing can be swapped out for another specific housing (as that's how I've received mine), however I do not know the details on it.

Could someone enlighten me as to what components are known to be easily swapped? Also any known accessories that can be swapped on?

Compressor Housing:
Turbine Housing:
Compressor Wheel:
Turbine Wheel:
Oil -AN adapters:
Water -AN adapters:
Thread pitch (of banjo bolts):

[Whizbang]

i don't think i fully understand your question, but are you asking what parts of the turbocharger are swappable from turbochargers from non rx7s?

[vex]

Originally Posted by Low Impedance

i don't think i fully understand your question, but are you asking what parts of the turbocharger are swappable from turbochargers from non rx7s?

Yes, in a nut shell.

For instance, is there a turbo that has a compatible Turbine housing. Not necessarily improved, but able to bolt up without incident. I ask as my turbine housing has heat fractures beginning to form and I'd like to not waste money/time getting the internal waste gate ported if I'll have to swap out for another turbo when the turbine housing craps on itself (the rest of the turbo is in awesome condition). Instead I'd rather pay 100-300 for a new turbine housing that either doesn't have an internal waste gate (and just go external), or already has an internal waste gate big enough.

There are also other components I'd like be able to put on (-AN oil adapters for instance). However the size/dimensions of the turbo aren't listed for them. They just say GTXX or what not. I think this might be very helpful information to the community in general.

[Whizbang]

just a thought, is the turbine housings sporting the same flanged connection to the rx7 manifold? if not, then i might be a hassle since you would have to either modify or replace the turbo manifold to accommodate.

[vex]

Originally Posted by Low Impedance

just a thought, is the turbine housings sporting the same flanged connection to the rx7 manifold? if not, then i might be a hassle since you would have to either modify or replace the turbo manifold to accommodate.

The turbo manifold is just a T4 flange. I'm already having to construct a new manifold (Turbo-6Port) but I have the T2 turbo from an S4 with a front mount that I picked up dirt cheap. Just would like to have this information out there. I emailed ATP about it and they just said "No --Ted". I'd think the only things I'd have to concern myself beyond what flange type it was would be the different dimensions of the exducer and make sure that there's a tight fit with no interference.

[85rx-7gsl-se]

I would just get a S5 housing and swap it on as they are compatible and thats the only real difference from a S4-S5. The S5 is already twin-port internal and with a little portwork will not boost creep even on modded motors. Fully ported stock-door S4 wastegates suck, mine would hid 20psi fully ported

[vex]

Originally Posted by 85rx-7gsl-se

I would just get a S5 housing and swap it on as they are compatible and thats the only real difference from a S4-S5. The S5 is already twin-port internal and with a little portwork will not boost creep even on modded motors. Fully ported stock-door S4 wastegates suck, mine would hid 20psi fully ported

There still has to be other housings that are compatible. Hell, if they're not compatible with the exducer then couldn't one theorhetically buy a new turbine wheel and housing and put them on? Granted to keep them relatively similar in size to produce the same effeciency would be ideal, but beyond that would you have to get the rotating assembly blueprinted doing that? or can the individual components be blue printed then combined to be balanced? Yes? No?

[djmtsu]

As far as the hotside goes, you are out of luck. The Hitachi turbo and manifold used on FC's are proprietary for the rotary engine. For cold sides, you can build a hybrid using a T04 backplate, T04 60 trim compressor housing and wheel.

[vex]

Originally Posted by djmtsu

As far as the hotside goes, you are out of luck. The Hitachi turbo and manifold used on FC's are proprietary for the rotary engine. For cold sides, you can build a hybrid using a T04 backplate, T04 60 trim compressor housing and wheel.

I guess that means one couldn't retrieve the dimensions from the exducer and see if they match any other aftermarket (garret, turbonetics, etc) hotside huh?... Bummer. Okay, so the hotside is out of luck, and the compressor side can actually be modified to handle other trims.

What about oil flanges?

[RETed]

The turbine (flange) is proprietary to the application.
Almost everything else is based on a Garrett T3 / T04 turbo.
So all the little bits are usually swappable.


-Ted

[vex]

Thanks Ted!

Just for clarification: If i'm building a manifold from scratch I can use a T04 hotside and build around that flange? Or it's still a no-go because of the exducer?

[djmtsu]

Ted said essentially the same thing I did. As far as building a custom manifold, are you wanting to use this manifold for a stock turbo, or a T04 turbo? Like what was said earlier, the foot print on the manifold is different between a T04 and the Hitachi, so it really depends on what you are trying to accomplish.

I am not getting it for some reason.

[vex]

Originally Posted by djmtsu

Ted said essentially the same thing I did. As far as building a custom manifold, are you wanting to use this manifold for a stock turbo, or a T04 turbo? Like what was said earlier, the foot print on the manifold is different between a T04 and the Hitachi, so it really depends on what you are trying to accomplish.

I am not getting it for some reason.

Alright, I'll try to be clear on what I have and what I'm trying to accomplish. The turbo I have is a stock S4 Turbo with a different compressor housing on it. I do not have the turbo in front of me, but I do have some pictures on the net of it. Let me get a few for everyone.

Here's the condition of the hotside:





Since the rest of the turbo is 100% mechanically i'd like to just replace the hotside with a compatible hotside. This is for a 6Port Turbo so I won't need to limit myself to the flange of the Stocker. I am worried about is the turbine wheel hitting the aftermarket Turbine housing and thereby destroying the turbo. If the only difference, or the only reason it won't work is the mating flange to the manifold I'm not concerned about it. Just for comparison here's the rest of the turbo (it already came with the garret compressor housing and the manifold, which although nice, won't really work in my application):

[85rx-7gsl-se]

S5 hotside seems to be the only reasonable choice here....

[djmtsu]

Get an S5 hotside and exducer wheel. Should work out well for you. Or, since you have the hybrid parts, but a blown T4 and rebuild it using some of the parts from the hybrod turbo and go full T04 (since you are making a custom manifold anyway).