davidleonardi

How can I attach the photo here ? Never done that before. Kindly advice. Thanks.

davidleonardi

Did you receive my attachments ? If you do, kindly inform to me whether this turbine is RX6 turbine or not ? If it's which kind and what's the specifications of this turbine ? I need this information for tuning purposes. Your reply is highly appreciated. Thanks.

Iwan

You have a real RX6 Turbo with the TCW77 compressor (which is the high flow version). The exhaust housing is unfortunately a P20 housing which is too small for Rotary. You need the P27 exhaust housing for Rotary applications.

Best REgards,
Iwan

davidleonardi

Thanks a lot for the reply. So are u saying that this turbo is not bolt on for FD engine ? With this turbo how much power can I expect with petrol RON 92 and standard ECU with Dastek piggy back ?

Please advice what do you know about this turbo as my power expectation is only 300 - 350awhp. I don't have any body to ask from. I hope you could guide me on this turbine. Thanks.

David L

davidleonardi

Hi Iwan,

I tried to search for the spec for TCW77 and I would like to confirm with you whether the following specs are correct or not;

TCW77 -
- Compressor Wheel:
-- Inner Diameter: 61mm
-- Outer Diameter: 82mm
- Turbine Wheel:
-- Outer Diameter: 52mm
-- Exhaust Diameter: 62mm

Yr reply is highly appreciated. Thanks a lot.

David L

Iwan

Please remove the cover and measure the wheels to be 100% sure and confirmed by your own measurements.
From the pics provided, the compressor is the big type TCW77 instead of the small TCW76.

The P20 housing will make 300horeses, however, you will have lots of back pressure and loose power as per small exhaust housing. However, you will have a very quick spool-up and boost build-up.

For the most power out of this turbo, I would recommend you to upgrade to P27 exhaust housing.

Best REgards,
Iwan

davidleonardi

Hi,

Thanks for the repy. So what do I have to measure ? The diameter of the wheel or the number of wheels ? Sorry but pls enlighten me.

I'm still not sure about the P20 housing and P27 housing ? Are you saying that I should use P27
Exhaust housing ? Please mind that I'm only after 300awhp max. So my turbo is having TCW 77 compressor but which exhaust housing ? How much power can I obtain from this turbo ? Kindly reply thanks.

David L

Iwan

Please do not take it personal, but it looks like you have no idea about the Turbochargers at all and at current stage, it might be a good idea to bring your turbo to someone who is familiar with turbochargers.

However, I did not asked you to count the blades or so, I suggest to you to measure the size of the Compressor wheel and the size of the turbine wheel. You might want to have a look to the picture I have attached so you have an idea of what I'm talking about.

For the size of the exhaust housing, Apexi and IHI recommend to use the P27 housing for Rotaries. The P number is the way how IHI name the turbine housing. In case of RX6 turbo, the P27 housing was the biggest available f I'm not mistaken (I've never seen a bigger housing than the P27). The P20 housing you've got was recommended by IHI for 2 Liter engines, like the Nissan SR20 engine.

Best REgards,
Iwan

davidleonardi

Hi Iwan,

Thanks for the reply. Nope that's all right. You're right that I'm blind about turbocharger.

Yes I understand what do I need to measure. My turbo'll arrive within this week. So once I have it, I'll measure the size of the turbine wheel and let you know. So kindly wait. Thanks a lot.

David L

davidleonardi

eXcuse me,

Is there anybody out there wants to sell broken IHI RX6 Turbo. I need the housings. If anybody out there is planning to get rid of yr RX6 turbo, I'd really appreciate if you contact me at; david_leonardi@yahoo.com

Yr reply is really highly appreciated. Thanks a lot.

NoddE

A bit late this reply but i was searching RX6 and this thread popped up.

David, i guess you have already opened the RX6 to measure but for future reference here is how to know the spec of the RX6 without opening it:

SPEC = compressor size/manufacturing Date
Serial No: turbo family/serial number

Compressor sizes:
TCW10: VA490030
TCW15: VA490031
TCW76: VA490032
TCW77: VA490033

Turbine size converted:
P16 = A/R 0.63"
P18 = A/R 0.71"
P20 = A/R 0.79"
P22 = A/R 0.87"
P25 = A/R 0.94"
P27 = A/R 1.06"

Formula how to calculate the right turbine housing size (non-rotary though):

D(isplacement (CC) x max RPM) / 900000


Compressor maps:
http ://forumbilder.se/images/512120101124087d48.jpg

http ://forumbilder.se/images/e5212010112322edbd.jpg

http ://forumbilder.se/images/5521201011223216d9.jpg

http ://forumbilder.se/images/e42120101121022311.jpg

TCW15
The smallest compressor available in the IHI RX6B family is the TCW15. As for horsepower potential, the TCW15 is best for applications in the 400 to 440 flywheel horsepower range.

TCW10
This compressor is best suited for lower boost applications with larger displacement. As for horsepower potential, the TCW10 is best for applications in the 450 to 500 flywheel horsepower range.

TCW76
The TCW76 compressor uses a compressor wheel with a larger major diameter than the TCW15 or TCW10. This compressor is best suited for mid-to-high boost applications. As for horsepower potential, the TCW76 is best for applications in the 470 to 520 flywheel horsepower range.

TCW77
The TCW77 compressor also shares the larger outside diameter compressor wheel like the TCW76. However, the inducer of the compressor is 61mm (a 5mm increase from the TCW76). This translates into a 55-trim relationship. This compressor is best suited for high boost applications. The best efficiencies are in the 2.1 to 2.6bar (30.5-38psi) boost pressure range. As for horsepower potential, the TCW77 is best for applications in the 550 to 600 flywheel horsepower range.

NoddE

David, let me know if you want to sell the TCW77-P20 or the turbine housing alone.