NEW SUPER T4 TURBO

T4 FLANGE - GARRETT / KKK STAGE V WHEEL

EXHAUST 1.06 / .60 COMPRESSOR

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Any comments or helpful info would be greatly appreciated !!

THANKS!

 

N E 1?

 

is this the same turbo that ssautochrome sells

 

this is the same turbo that was just discussed like a day or two ago.

 

https://www.rx7club.com/single-turbo-rx-7s-23/t60-1-05-hot-side-too-small-1-2-bridge-357292/

think so...

 

Sorry, I wanted to wait until I received it before I posted.

Yes it is the one from SSAutochrome. The other post only bashed SSAutochrome and didn't really give the information that I was looking for.

The turbo is going to be used for a mild streetport I am building.

The turbo itself looks great. Good workmanship, there is no play, and the wheel spins freely.

The reason I asked was for the following:

Are the specs good for a mild port, ? RWHP at 16 to 17 psi? I have the necessary fuel, computer and wideband for tuning, FMIC and an HKS SS manifold.

For the cost it was worth it.

If anyone wants some pictures, let me know and I'll post them.

Thanks again.

Attila

 

exhaust side looks good.

.60 compressor might be small...run out of breath to soon for an 8k rpm engine.

look at getting a .70 A/R compressor with a 4in inlet.

 

That's just a standard T04B. Don't look for much over 350rwhp for that. It's also got a backcut turbine wheel...

However, could you please post inducer and exducer measurements so we can all just quit talking about whether these ebay turbo's are "ok" to use? That would be a great help to people asking the same question every week!

 

the AR for compressor and turbine are really far apart. I dont really think a .60 AR compressor with a 1.06 AR turbine will get you far. What's your HP goal? Have one?

 

I don't understand what you're trying to get at here... Care to explain?

 

Try do a search on "master power turbo"?


-Ted

 

The sizes are spaced far apart...i.e. maybe for an engine that has a low rpm band and lots of exhaust flow??? Diesel???

Exhaust side is perfect for a rotary...will take some time to spool (relative statement, larger = more lag) and the compressor side is capable of making boost "relatively" soon (smaller = faster spool), but will have not much of a high end.

So we have something that needs high exhaust flow and need for boost in low rpms

 

Compressor A/R size does not play much of a role in determining how soon a turbo will spool. A standard .60 A/R T04B or T04E compressor housing will of course not hold as much volume of air as a .70 T04S housing, but with smaller compressor wheels (60mm and smaller... assuming they flow less air than anything larger), they should be more efficient. That said, I don't think comparing a compressor housing A/R to a turbine housing A/R should matter much at all.

You should compare the compressor wheel to the exhaust wheel, as that would be a more useful comparison.

 

Maybe I didn't really understand what you are trying to say, but a/r has everything to do with spool. But it's a balancing act.

I took this from Garrett:

A/R- A/R describes a geometric property of all compressor and turbine housings. Increasing compressor A/R optimizes the performance for low boost applications. Changing the turbine A/R has many effects. By going to a larger turbine A/R. the turbo comes up on boost at a higher engine speed, the flow capacity of the turbine is increased and less flow is wastegated, there is less engine backpressure, and volumetric effeciency if increased resulting in more overall power.

 

Yes, but as I said above, it plays very little role in determining how SOON a turbo will spool. Think of it this way, the larger the compressor A/R, the more time it takes to fill the area with a volume of air before it will smoothly move out of the housing (somewhat having to do with velocity?).

Turbine A/R itself plays a large role in determining spool, backpressure, and overall exhaust flow though... but it's relationship to compressor A/R is not a very useful comparison to determine much, if anything.

 

double post

 

.6 a/r is fine for that compressor wheel regardless of turbine a/r. theres no ryme or reason to look for closely match comp and turbine a/r's, it just doen't matter. It like infini Iv said, its more of a concern that the wheels match, then the turbine a/r per engine requirements and spool, then comp a/r usually is matched to a certain comp wheel. BTW, yeah thats just a run of the mill T04b thats every were for sale DIRT cheap, you'd be lucky to see 350 whp but its not out of reach.

~Mike...........

 

Where can I get different A/R for the compressor side???


-Ted