Toyota Powered VL Calais

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Re: Toyota Powered VL Calais

Postby psyolent » Fri Jan 05, 2018 2:30 pm

have to start calling you VL400 - BigData
Cheers,
Greg aka Sir Burnie Tanington

VX1 Berlina V6, VT1 Berlina V6 (Track), VN1 S V6, Hilux RN105 GMV8, Ford XP 170.

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Re: Toyota Powered VL Calais

Postby Charlescrown » Fri Jan 05, 2018 2:40 pm

On my EVO they have only a 2.5mm return inside the tank. It creates a venturi effect to draw fuel from the LH side of the tank. I fitted a Walbro 255 and had problems only to find out that the venturi hole needed to be drilled out to 3.5mm. I did some before and after fuel pressure tests on both the supply and return line and found it was around 15 psi in the return line and now is around 4. Car is now running as it should.

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Re: Toyota Powered VL Calais

Postby VL400 » Fri Jan 05, 2018 3:47 pm

Spare tank now has an access hole :lol: Looks like the venturi is only 2mm, well that sucks! Certainly sounds like similar issues in the Evo Charlescrown.

Some pics...
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Swirl 1.jpg
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Swirl 2.jpg
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Venturi 1.jpg
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Venturi 2.jpg
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Re: Toyota Powered VL Calais

Postby immortality » Fri Jan 05, 2018 4:39 pm

Would a fuel tank from a later model Commodore possibly have a larger venturi on the return?

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Re: Toyota Powered VL Calais

Postby vlad01 » Fri Jan 05, 2018 10:06 pm

Just add a 2nd bleed in the line to relieve pressure but still allow the stock venturi to work.

Alternatively, turn a new larger one up out of SS or if you can, drill that one out larger.
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.

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Re: Toyota Powered VL Calais

Postby VL400 » Mon Mar 05, 2018 2:00 pm

The new fuel setup with the return in to the swirl pot seems to be holding up ok so far. Think it will stay for now. And with the rewired fuel pump now only seeing about 1-2PSI off target at around 230LPH of fuel flow, this is an internal 340LPH pump.

The cooler that was replaced earlier in the year performs better in terms of pressure drop but as expected the tube and fin design is slightly less efficient compared to the old bar and plate. But overall happy with the systems as a whole, total ratio of 1.3 for exhaust back pressure to inlet pressure is reasonable. Dropping 2 PSI at 10.5 PSI inlet manifold pressure, it was dropping around 4 PSI and climbing for 8 PSI manifold pressure on the old cooler with the same 70% wastegate DC.
Cooler.png



Added a switch for manual/auto control, so the above pull was in 2nd gear. Works like a charm using the manual input pin D10 (on a '424 PCM) and the following settings and applying battery volts to get manual mode. No kickdown control in manual mode so never kicks back, just follows whatever position the shifter is in.
Shift.png



Have had issues with wheel spin, once boost starts in first it never ends. Some may not see that as a problem :lol: So have added a number of correction tables for what was the flex output but is now tailored more for wastegate control.
This was a test to see what would happen on the 1-2 shift with only the shift boost reduction table in play (time since last shift multiplier table), so have cleared the table that reduces duty cycle in first gear. It starts to spin at around 50KPH, and then on the 1-2 shift the gate duty cycle drops to 0 which reduces wheel spin massively from what it was. Still heaps of spin but the VSS and actual road speed are probably only 30odd KPH different for a second or so instead of at least double that for much much longer.

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Re: Toyota Powered VL Calais

Postby vlad01 » Mon Mar 05, 2018 2:50 pm

you could try one of these units. G has one on his race car with E85 and it's been flawless. Neat and easy setup to install.

I have looked at the same unit for my next VP, depending if I can clear the gap between the floor and tank. You can space the tank out a bit if needed.

https://www.aeromotiveinc.com/product/phantom-flex/

https://www.aeromotiveinc.com/wp-conten ... -0revA.pdf


You can get a dual pump version as well for more power potential.
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.

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Re: Toyota Powered VL Calais

Postby Biggvl » Mon Mar 05, 2018 3:20 pm

Yeah, been really good, as long as you can swallow the costs. Has copped a fair beating and really been trouble free :thumbup:

I love this thread, I go back over it when ever i need inspiration :D Kinda like project binky just in pictures :lol:
According to chemistry, alcohol is a solution...

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Re: Toyota Powered VL Calais

Postby VL400 » Mon Mar 05, 2018 4:22 pm

Yeah those intank setups from Aeromotive are sweet, certainly on the upgrade list. Circle track is a good test for fuel slosh!

I also like the idea of this product ... https://www.holley.com/products/fuel_sy ... hydramats/
Just needs an inspection hatch cut on the top of the tank and can use most the factory setup still.


Biggvl wrote:Kinda like project binky just in pictures :lol:

haha, about the only similarity is that my pictures are also in colour :lol:

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Re: Toyota Powered VL Calais

Postby Charlescrown » Mon Mar 05, 2018 4:27 pm

Awesome car now. What is the exh ratio your logging?

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