HE351VE, We are for the big...

[casuprock]

HE351VE, the final frontier... Let me know what numbers this beast can put down from a built 2.3L stroker. Whenever I get around to finding out, I'll buy the closest guess a beer...

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[black_gst]

1200hp

 

[Kyogie12]

That is absurd. 1000 ponies.

 

[AK Maniak]

690hp

 

[RadDsm]

You won't.

 

[JusMX141]

It's a 7-blade HX40 compressor mated to a HX35-sized turbine wheel in a VGT turbine housing. At best you're going to see 68-70 lb/min of airflow, which is good enough for 500-700hp depending on tune and boost pressure.

The real benefit will be the VGT system if you can make it work properly. You'll have a HX40 that could literally spool as quick as a 16G if the VGT system is operating properly....if that's the case, nothing on the market will touch a 70 lb/min turbo that would reach full boost under 4000rpms.

 

[Ripley]

What would it take to make the VGT system work properly? If its feasible why aren't more people doing it?

 

[95eclipser]

hmmm 760 just for fun

 

[kthackst]

Buhahaha. Chris, I knew it was a matter of time before I saw you post pictures of this up on here.

If there anyone with the ability to do this it's definitely you. Haha.

 

[cherrod8]

I believe a VGT controller is in the works. There's a thread on the turbo talk forums where I guy put one on his 2ga gst. I would like to get my hands on a HE351VE.

 

[untouchablecc]

Dont be modest. We know you can double fist that. 760

 

[1991GSXAWD]

Dont be modest. We know you can double fist that. 760

650

 

[hurricanecris24]

800 whp

 

[casuprock]

Better question... Supposing this works, how would I reach the possible power levels without a welded center diff or stripping first/second/third gear into nubs? RadDsm might have a point.

I work with some people who do PVD coating on cutting tools- this might be a coating option for reducing gear friction . Also, cryo and nitriding are options for painful $

 

[Lavery]

I'll say 625 wheel.

You MAY have to dent your water jacket to make this fit

 

[cookmeup272]

I'll say 625 wheel.

You MAY have to dent your water jacket, hood, block, radiator, roll stop.... to make this fit

that looks better

 

[JusMX141]

What would it take to make the VGT system work properly? If its feasible why aren't more people doing it?

There are threads on this forum where a couple guys have run these on their cars.

http://www.dsmtuners.com/forums/turbo-system-tech/323774-holset-he351-vgt-goin-my-car.html

The bottom line is you cannot actuate the VGT using the electronic controller that comes on the turbo because your car is not equipped with a system that monitors the engine load, throttle position, turbine shaft speed, and boost level in relation to the VGT position.

Anyone who has done this so far has used a wastegate actuator to control the VGT through vacuum / boost pressure.

 

[dsmdeliveryboy]

And the VGT is??

 

[proteusx301]

And the VGT is??

Variable Geometry Turbo

 

[dsmdeliveryboy]

Variable Geometry Turbo

I'll have to look it up Lol

 

[casuprock]

There are threads on this forum where a couple guys have run these on their cars.

http://www.dsmtuners.com/forums/turbo-system-tech/323774-holset-he351-vgt-goin-my-car.html

The bottom line is you cannot actuate the VGT using the electronic controller that comes on the turbo because your car is not equipped with a system that monitors the engine load, throttle position, turbine shaft speed, and boost level in relation to the VGT position.

Anyone who has done this so far has used a wastegate actuator to control the VGT through vacuum / boost pressure.

It sure won't be easy. We'll see what I can do with her... I think I can make a control system for this beast. I got the motor running this morning.

YouTube - HE351VE Motor Control

 

[JusMX141]

If you can figure out some way to control the VGT electroncially and use ECMLink to control it, that would be awesome.

 

[casuprock]

If you can figure out some way to control the VGT electroncially and use ECMLink to control it, that would be awesome.

My company makes electronics so I will build a controller that plugs into a pressure sensor and controls the vane positions based on boost pressure. Throttle position might also be a good control variable.

Here's the problem:
Concurrently tuning air/fuel and the VTG will be very difficult if one of the systems is not closed loop... air/fuel will have to be closed loop to keep the system at stoich and eliminate the variable. Otherwise, tuning could be an exercise in tail-chasing.

Possible solution:
Install a closed loop air/fuel management system like AEM to keep the AFR at like 12.7 or something?

Any ideas on the air/fuel solution would be helpful, I have an AEM uego wideband I got from my friend Kevin so that's why the AEM idea came up.

 

[donniekak]

My company makes electronics so I will build a controller that plugs into a pressure sensor and controls the vane positions based on boost pressure. Throttle position might also be a good control variable.

Here's the problem:
Concurrently tuning air/fuel and the VTG will be very difficult if one of the systems is not closed loop... air/fuel will have to be closed loop to keep the system at stoich and eliminate the variable. Otherwise, tuning could be an exercise in tail-chasing.

Possible solution:
Install a closed loop air/fuel management system like AEM to keep the AFR at like 12.7 or something?

Any ideas on the air/fuel solution would be helpful, I have an AEM uego wideband I got from my friend Kevin so that's why the AEM idea came up.

Using a maf based air meter will keep afr's rock solid, no matter what the VE changes are from the changing turbine a/r.

 

[casuprock]

Using a maf based air meter will keep afr's rock solid, no matter what the VE changes are from the changing turbine a/r.

will this be faster reacting than the wideband? the time constant of resistive maf sensors might be a concern. I'm not familiar with how fast a maf will respond to changes in flow. it's probably dependent on the resistor size, maf diameter, flow rate, etc.