t88 turbine wheel lightening - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

roadie · 1st September 2006, 04:36 PM

I've found a company that will lighten the wheels in my t88 by 10% and 15%. Does anyone know how this will, if at all, improve the response of the turbo ?? Would it require a remap too ??....Thanks...Kev.

R32 Combat · 1st September 2006, 05:32 PM

Really??, who does that?? Sounds good..

roadie · 1st September 2006, 05:49 PM

It's a company called ForcedInductions.com in the US. This is what I was told:
"We can do modifications to the wheels and bearings to make the turbo spool a little sooner, but its marginal. We can lighten the wheel by 10% and turbine wheel by 15% as well."

The price seems good at around $600. It includes labour and parts. I don't want to go thru the cost of a remap and new turbo. My goal is to have the turbo start spooling 500rpm sooner....

SteveN · 1st September 2006, 06:40 PM

They quite a well respected company in the US, ive had some dealings with them.

tyndago · 2nd September 2006, 05:22 PM

Its not clipping the wheel is it ?

Clipping works...but its kind of a ghetto way to do it.

Mike Kojimas article on clipping exhaust wheels .

http://www.nissanperformancemag.com/april06/nerds/

roadie · 3rd September 2006, 03:02 AM

Interesting read...I will inquire how they go about lightening the assembly....

tyndago · 3rd September 2006, 03:58 AM

Quote:

Originally Posted by roadie

The price seems good at around $600. It includes labour and parts. I don't want to go thru the cost of a remap and new turbo. My goal is to have the turbo start spooling 500rpm sooner....

Nitrous. It will spool - right now.

Warpspeed · 4th September 2006, 12:53 AM

This all assumes theat the Garrett engineers that designed the compressor wheel in the first place seriously screwed up the original design.

It suggests they placed additional material into the wheel that adds significant weight without adding any strength. It may not matter if you are only running low boost, at low compressor Rpm. But if you are seriously pushing that compressor to a high pressure ratio, I would be a little bit careful.

Most of the rotating inertia is in the turbine anyway.

tyndago · 4th September 2006, 01:15 AM

I would say the Garrett guys didnt have much to say about the Mitsubishi turbo the T88.

Turbine and compressor design is advancing. An old turbo works, but a newer one is more efficient. Its like a carb, they work, but fuel injection works better.

Warpspeed · 4th September 2006, 02:21 AM

Fair comment Sean,

But even Mitsubishi are not immune from the laws of physics.

Lightening any very high speed machinery needs to be done with extreme caution.

roadie · 4th September 2006, 01:58 PM

My car puts out approx. 800hp at 1.8 bar with this t88 set-up. I am also a little concerned that putting the wheels on a diet will weaken them.

tyndago · 4th September 2006, 03:57 PM

Quote:

Originally Posted by roadie

My car puts out approx. 800hp at 1.8 bar with this t88 set-up. I am also a little concerned that putting the wheels on a diet will weaken them.

Try a non-diesel truck turbo on it. The newer turbos are much more efficient than the old T88's.

1st September 2006, 04:36 PM	#1 (permalink)
roadie GTR Register Member Join Date: Feb 2006 Posts: 681	t88 turbine wheel lightening I've found a company that will lighten the wheels in my t88 by 10% and 15%. Does anyone know how this will, if at all, improve the response of the turbo ?? Would it require a remap too ??....Thanks...Kev.

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1st September 2006, 05:32 PM	#2 (permalink)
R32 Combat New Users Join Date: Jan 2004 Location: Berkshire Posts: 4,357	Really??, who does that?? Sounds good..

1st September 2006, 05:49 PM	#3 (permalink)
roadie GTR Register Member Join Date: Feb 2006 Posts: 681	It's a company called ForcedInductions.com in the US. This is what I was told: "We can do modifications to the wheels and bearings to make the turbo spool a little sooner, but its marginal. We can lighten the wheel by 10% and turbine wheel by 15% as well." The price seems good at around $600. It includes labour and parts. I don't want to go thru the cost of a remap and new turbo. My goal is to have the turbo start spooling 500rpm sooner....

1st September 2006, 06:40 PM	#4 (permalink)
SteveN GTR Register Member Join Date: Aug 2002 Location: Just off the M5/A40 Posts: 7,209	They quite a well respected company in the US, ive had some dealings with them.

2nd September 2006, 05:22 PM	#5 (permalink)
tyndago GTR Register Member Join Date: Oct 2002 Location: LBC , CA Posts: 2,400	Its not clipping the wheel is it ? Clipping works...but its kind of a ghetto way to do it. Mike Kojimas article on clipping exhaust wheels . http://www.nissanperformancemag.com/april06/nerds/

3rd September 2006, 03:02 AM	#6 (permalink)
roadie GTR Register Member Join Date: Feb 2006 Posts: 681	Interesting read...I will inquire how they go about lightening the assembly....

4th September 2006, 12:53 AM	#8 (permalink)
Warpspeed GTR Register Member Join Date: Apr 2003 Location: Melbourne Australia Posts: 169	This all assumes theat the Garrett engineers that designed the compressor wheel in the first place seriously screwed up the original design. It suggests they placed additional material into the wheel that adds significant weight without adding any strength. It may not matter if you are only running low boost, at low compressor Rpm. But if you are seriously pushing that compressor to a high pressure ratio, I would be a little bit careful. Most of the rotating inertia is in the turbine anyway.

4th September 2006, 01:15 AM	#9 (permalink)
tyndago GTR Register Member Join Date: Oct 2002 Location: LBC , CA Posts: 2,400	I would say the Garrett guys didnt have much to say about the Mitsubishi turbo the T88. Turbine and compressor design is advancing. An old turbo works, but a newer one is more efficient. Its like a carb, they work, but fuel injection works better.

4th September 2006, 02:21 AM	#10 (permalink)
Warpspeed GTR Register Member Join Date: Apr 2003 Location: Melbourne Australia Posts: 169	Fair comment Sean, But even Mitsubishi are not immune from the laws of physics. Lightening any very high speed machinery needs to be done with extreme caution.

4th September 2006, 01:58 PM	#11 (permalink)
roadie GTR Register Member Join Date: Feb 2006 Posts: 681	My car puts out approx. 800hp at 1.8 bar with this t88 set-up. I am also a little concerned that putting the wheels on a diet will weaken them.