HRC super 20G turbos (long)...

[boost junkie]

I'm buying an HRC super 20G turbo. I'm trying to sort out their turbo options. I happen to have 2 turbine housings sitting in the garage.

8cm : 79-12100
14cm : 79-14300

The 14 is WAY too big for me since I'll be using this on a 2.0L neon engine. I think the 8cm will be just right. Here's my question. HRC has 3 different 20G's available. The regular 20G, 20G-H and the 20G-N (cant find any other info on that one).

20G: (the turbo I'm buying)
TDO6H20G-TDO5H10CM2
Max. CFM: 680
Compressor Inducer / Major Diameter: 2.075" / 2.675"
Turbine Exducer / Major Diameter: 1.930" / 2.200"
http://www.hahnracecraft.com/hahn/parts/s20g.htm

20G-H (The turbo I want to build)
TDO6H20G-TDO6-8CM2
Max. CFM: 680
Compressor Inducer / Major Diameter: 2.075" / 2.675"
Turbine Exducer / Major Diameter: 2.175" / 2.560"
http://www.hahnracecraft.com/hahn/parts/s20gh.htm

20G-N (N wheel???)
TDO6H20G-TDO6H10CM2
Max. CFM: 720
Compressor Inducer / Major Diameter: 2.075" / 2.675"
Turbine Exducer / Major Diameter: 2.315" / 2.650"
http://www.hahnracecraft.com/hahn/parts/s20gn.htm

Ok, sorry for the long post, but basically I want to convert my TD05H10CM2 turbine to the 8cm turbine I have in my garage. Oh, you might want to know the goals. 400whp from a 2.0L on race gas.

Can anyone identify what wheels those are by the in/ex diameters?
Should I just stick an H wheel in my 8cm housing?
Is my 8cm turbine housing a td06?

thanks

 

[jwaller]

the 8cm is meant for a TDO6(stock syty).

the H means it's meant for the larger 12 and 14cm housings. as the H means a larger turbine wheel,


I havent heard of a N wheel. if I had to guess it's some import DSM sorta thing that is meant for smaller displacement motors.

the stock TDO6-8cm housing 20g will be fine for your 2.0L the 12-14cm stuff is way too large for a 4cyl 2.0L.

I wouldnt go to the time expense of using s H and a 8cm as it would be a much larger exhaust wheel and might be more difficult for you to spool up.

 

[nightdiver]

Some of you guys know that i installed a jimmy 2 turbo to an Opel astra 20lt 16V.
You might be interested what it did on a 2 liter car.
Well there is a new dyno just 3 miles away from home and they has just installed it.
The dyno was bought from Germany so a technician came to do all the job needed.
When they finished they got the astra on the dyno and they saw that they had traction problems @ spool up...?????????
After one hour and with 4 guys on the car(fenders) they recorded 415 fwhp @8000rpm with 22 psi of boost but still with 85% tps.
It was not possible to get traction with the 225 45 17s.
The guy said "too damn sudden , endeless power man.. i cant do anything better unless you come with a pair of slicks"
I made the headers with 42mm (inside) tube and used the stock syclone turbine

 

[nightdiver]

I got a pic if you want to see.Just email and ill shoot back

 

[boost junkie]

sorry, im not a syty guy so whats a Jimmy 2 turbo? Is that a stock 17C/td06 turbo?

Yes, i'd like more info if you have it. You can email me directly

 

[nightdiver]

Its a 57-58mm induser with a 3 inches OD and 0,70 compressor
The exhaust had a 14 turbine with a stock shaft. I used the stock 8 turbine .
Whats your email ?

 

[nightdiver]

As you see in the photo i have a 4 inches air flow meter
I just sold my second jimmy 2 turbo to a supra guy.....wait for results 8)

 

[nightdiver]

Ok , new turbo in the Opel , T67 0.72 a/r compressor 4 # inlet and P trim 0.70 turbine
Boosts at 4500 (full boost) and pulls like hell :rotf: