Markp

Well played swaptronics with two chinese turbos today.

Turns out that they play well with each other. I was able to successfully put the 46 trim .70 A/R compressor on the .63 A/R stage III turbine and the 57 trim .50 A/R compressor on the .84 A/R "P-trim" Turbine (2.92"/2.54") 76 trim turbine.

Obviously the largest of the "stage III" turbines doesn't even come close to this other monster. This thing is a beast. I suspect that the 76mm 57 trim compressor with the big turbine is a 450 HP turbo and the 76mm 46 trim with the "stage III" .63 A/R turbine is good for 300-350 HP.

Mark

neogenesis2004

iTrader: (12)

Those are the same dimensions as the turbine on my s256, although I'm not sure if they are the same turbine.

Braineack

iTrader: (62)

what were you running before?

Markp

1st turbo was a T3s60
2nd turbo was the T3/T4 chinacharger with the .63 A/R "stage III" turbine.
3rd turbo is a hybrid between the T3/T4 chinacharger and the T70 chinacharger.

Problem with the T70's is that they are really a 46 trim T4 compressor, flowing a maximum of around 40 lbs/min of air, where the T3/T4 chinacharger (and there are two different types... one good and one not so good.) had an honest to goodness 57 trim 76mm compressor wheel that should flow around 50 lbs/min of air in a .50 A/R housing. (The not so good one looks to have a 46 trim compressor as well.)

So obviously I wanted to use the P-trim(76 trim) turbine that came in the T70 2.92"(74.1mm)/2.54"(64.5mm) Turbine instead of the 68 trim 2.xx (I suspect 2.5x or so)/2.25(57.1mm) "stage III" turbine. Swapped the compressor housings and viola... new ghettohybrid.

Mark

cjernigan

iTrader: (13)

Do you still have the T3s60 with the possibility of wanting to get rid of it?
Just curious.
That's awesome that they fit together well. Do you care enough to get a new balance done? When do you plan to install that beast?

Markp

Sold the T3S60, but the T3/T4 with the 46 trim compressor is for sale. There was some damage to the turbine blades (some weld slag hit it.) Turbo works fine, blades aren't 100% though. No play in the turbo, no oil leakage. $100

You don't have to rebalance as the compressors are balanced independent of the shaft and turbine (or should be.) If it's off I will be surprised. Corky has it at the shop, I am trying to get it done. I leave for OIS in 8 days though and likely won't see the car until xmas.

Mark