GT2056
Turbo Mini Forums

Given Roberts performance on the rolling road at nearly 190hp with the GT17, then that would be my choice for say up to 20 psi boost.

The GT2056 should start to deliver the goods above 200hp.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Thanks Wil, more food for thought. TBH I would like a GT17 for the 1310 but I haven't found a reasonably priced good condition one yet.

If something is worth doing, it's worth doing half of.

I came across a Garrett turbo with a .48 compressor and a .63 turbine. My goal would be stock Metro turbo compression and 8lbs of boost. I also plan to place the turbo on top of the flywheel housing, so the exhaust runner would be longer than normal. Comments on what this turbo would do...???

No idea without more information.

I was thinking that it came down to A/R sizes. This seems to be a smaller compressor and bigger turbine than what I've read about. How do I chose? What are the sizes on the stock T3; I have a Mini with that in it.
What other info do I need? Any help would be very much appreciated.

Mike Guido

So Paul did you try this turbo ? How about oil-only core ? I'm also looking for the diesel stuff.

std 998 A+, g295, MD266, RHF4, 109hp @0.8bar/5400rpm

Not yet.

I'll probably be working on the downpipe later today.

Nick has got 190+ hp out of his though.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Sounds like a T25 off a 200sx maybe. Better to start a new thread with these questions. .63 ex A/R is a bit big really.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Hi Guys,

I am running exact this turbo on my K engine conversion for 2 years now - never missed the cooling water stuff....
Boost starts at 3500rpm....
Harry

Bimmer Twinky headed and turboed A-Series:
http://www.minifreunde.at/harry/projects.htm

On 26th Mar, 2010 TurboHarry said:
Hi Guys,

I am running exact this turbo on my K engine conversion for 2 years now - never missed the cooling water stuff....
Boost starts at 3500rpm....
Harry

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

I was on an old Bosch dyno to optimize ignition....it made 225hp at the crank at 1 bar boost at 7800rpm (LT inlet, RS exhaust cam), the max I ran on the street was 1,2 bar.
The compressor map of the GT 2056 is very broad and effective - I took the CHRA and turbine from a Mercedes (V-band) and fitted the bigger 56 compressor from another turbo....IIRR it was from an Alfa, but no sure anymore?

If I could join the RR sessions in England easily I would run for sure more boost...)

http://www.minifreunde.at/harry/links/turbo.htm

Bimmer Twinky headed and turboed A-Series:
http://www.minifreunde.at/harry/projects.htm

thanks harry thats a good no. for the boost ,revs are high ,did you get a print out of the dyno run i could see ?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

with both RS cams I had max power > 8000rpm, engine came on the cam at 4500 - was no fun to drive for me - so I installed the LT for inlet and the engine came to live 1000rpm earlier and loosing nothing at the top - will try both LT cams end of this season.

should have one picture of the dyno runs, but's on a different computer - will have a look for it.

Bimmer Twinky headed and turboed A-Series:
http://www.minifreunde.at/harry/projects.htm

Yes i moved to the darkside

Instagram @jdm_brett

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

No - head is ported!

Bimmer Twinky headed and turboed A-Series:
http://www.minifreunde.at/harry/projects.htm

stock sized valves or huge massive race valves ?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

stock valve sizes - 3 angle valve seats....

Bimmer Twinky headed and turboed A-Series:
http://www.minifreunde.at/harry/projects.htm

What sort of price should i be paying for either a new/recon unit or a second hand unit?

This is the only one I can find:



The important number is the 751578.

They rarely come up secondhand.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

yup, they do seem pretty hard to get hold of. i managed to drop lucky with mine on ebay, not letting it go either, lol.

Yeah was gutted to have missed one a couple of months back went for £100 and was only delivery mileage.

Think i might have to look into an alternative.

I paid £140 for mine. virtually no miles in its original box.

If something is worth doing, it's worth doing half of.