My $150 Turbo Pics And More Specs.

[WogsRus]

Dam internet, i have to type it all again

Turbine side:

Exducer = 54mm

Inducer = 64mm

140 Trim or 71 trim, cos the exducer is back to front here???

Compressor side:

Exducer = 70mm

Inducer = 54mm

59 Trim

ALSO what core do i have when i took it all apart, i only have the following part in there

http://cgi.ebay.com/ebaymotors/COMPLETE-TU...sspagenameZWD2V

6,5,2,1,3 and 7. No number 8 and some of the others.

HUmmmm???

[discopotato03]

Gday Russ , welcome to the world of bastard hybrids .

From the top , I reckon the compressor housing is a Hitachi HT- I think SS from a series 4 or 5 RX7 13B turbo engine . I'll bet the turbine is from the same . The bearing housing looks like a water cooled Garrett T3 and the turbine housing from a single turbo RB or VG ceramic BB turbo . The compressor wheel looks like a 70mm 8/16 blade Garrett T04B . Lastly the compressor end seal is a carbon or mechanical face seal .

If it comes from South Aus there's a good chance that ATS built it .

You call but I would not put the 8/16 blade T04B wheel back in it because it will almost certainly surge . Garrett also make 6/12 blade versions of that compressor wheel family and they would be the simplist cheapest fix for it . If you can measure the front or inducer diametre of that wheel I can look it up and tell you the closest match in the 6/12 blade wheels .

From memory Bill Keen used to use either the -24 or -25 8/16 blade wheels possibly because these are the largest that would fit in the Hitachi compressor cover .

What is this thing aimed at ?

Cheers A .

[WogsRus]

hi Mate

Yeah the rear is an RB25 rear, same stamped numbers as mine.

the front is an RX7 as you said, but the cover has been hig flowed to shit, i have a standard one and the differance is hudge.

The front seal is a carbon seal, but i have no other components in there like a normal turbo, seams strange.

The turbo is to go on an RB25, and i was hoping it would not be too surgy. How do you know if a turbo will surge?

So the easiest way to fix it is to put a differnt compressor in it? How much do these go for? The turbo was originaly on an 180 SX belive it or not.

[WogsRus]

inducer size is of the compressor is on the page, do you mean the cover iducer size?

[discopotato03]

I don't look very often at T04B compressor lists nowdays and my list of the 8/16 blade range isn't complete . I think I still have the hybrid I had built like that ages ago and I know it has the -24 comp wheel in it . If I get time I'll measure it up later but ~ 54 mm rings a bell .

Similar sized 6/12 blade ones are 57 62 and 70 trims having 52.85 , 55.30 and 58.4mm inducer wheel sizes .

The problem with using these T04B compressors in T3 or those Hitachi comp covers is that the inlet boss diametre (approx 60mm) is a little small for the larger trim inducer sizes and , you have to allow for housing clearance on the wheel and enough wall thickness on the boss to take the inlet duct without cracking or crushing it . Its the same deal if you use the RB25 compressor cover as I did on my hybrid . Some people have used the T04B comp cover and backplate on the T3 bearing housing as they bolt up ok . At least then you have a housing thats native to the compressor wheel .

It really is hit and miss with these hybrids because so many different parts have been altered and the overall result can be hard to predict . You have to realise that to go down a development path costs money , to try 2 or 3 different compressor trims and couple of turbine housing A/R's means time and money and it gets tedious very quickly . If you have it I'd get the RB25 comp housing reprofiled to suit one of the 6/12 blade wheels run it and call it a day .

Cheers A .