08-19-2020, 01:48 PM | #29 | |
Drives: '17 ZL1 Join Date: Jul 2016
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08-19-2020, 01:54 PM | #30 |
Drives: '17 ZL1 Join Date: Jul 2016
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If you could adapt another stock pump to fit within the left hanger (which has a significantly different shape), then you could run a true dual pump setup. Both pumps would need their own jet pump in the opposite side of the tank (4 pickups in total). Then you could use a dual pump PWM controller from vaporworx to make it all work together.
With this setup, even when fuel is only in one side of the tank, both pumps would be working to supply fuel. This setup would be less than $1,000, but it would require some work for fitment.
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08-19-2020, 04:25 PM | #31 | |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
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08-19-2020, 04:32 PM | #32 | |
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Maybe I'm misunderstanding your suggestion, but from what I understand, if fuel is only in one side of the tank, you're only supplying fuel from one pump. If this pump isn't sufficient on its own to supply all of the fuel needed for the engine, then that won't work. (The other pump is just going to suck air after the mat is dry because the fuel doesn't come back on its own.)
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08-19-2020, 06:23 PM | #33 | |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
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Are you certain that the side of the saddle tank hump doesn't contain a large volume of fuel that's just leaning too far from the stock pickup? You seem certain all fuel has crossed over this hump. The Hydramat is designed to reach out much farther than the stock pickup to pull fuel from the far recesses of the tank that the stock pickup doesnt reach, and unlike the stock fuel sock which is just a filter, if the Hydramat it touches any fuel it draws it through the pump. A well designed dual-pump and dual-Hydramat system covering most of the tank area may solve this. Also, consider that as the fuel returns (gushes) back to the tank it sprays right down on the area under the hanger, where a Hydramat would be placed. And all of what I'm describing, which is just theoretical, only needs to be designed to support bursts or pulses of WOT and Gs, some longer than others. It's not designed to sustain 150 MPH in a continuous high G left turn on banking. But no fuel system except in a race car like NASCAR, is design for this, or needs to be. |
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08-19-2020, 06:37 PM | #34 |
Drives: 2020 Camaro ZL-1 1LE Join Date: Jul 2018
Location: Nashville
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JMS Voltage booster
Have you looked into Ted Jannetty’s 125 hp flex fuel mod? He runs this on a road course and the JMS Voltage Booster solves the problem. It’s a proven mod. Why the double pump work around?
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08-19-2020, 06:43 PM | #35 |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
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Jannetty is good for 125 HP, these guys want to go much bigger requiring a lot more fuel.
The Janetty kit seems great to me for road course with no pulley and added heat. If you go bigger and want reliability on track, 2650 seems like the way to go. |
08-19-2020, 07:29 PM | #36 | ||||
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Planning for short bursts at WOT isn't ideal because there are some very long straights on road courses. VIR has one that is 3/4 mile, and there is a straight on the Nurburgring that is 1.3 miles+. A good solution is not going to leverage an assumption that WOT will only come in short bursts. An OEM quality solution is one that can sustain a sufficient fuel supply indefinitely while fuel is only present in one side of the tank. If a solution under this scenario relies on one pump, then we're basically right back at the original problem. If we had a single pump available that could pull this off, we could just swap the factory pump and leave everything else. It's a tough problem. If it were easy the aftermarket would have it right by now, but they don't. The aftermarket providers like DSX Tuning, Fore Innovations, etc. all think they have the problem solved too... until it's tested on a road course.
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08-19-2020, 09:05 PM | #37 | |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
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I dont agree there isn't a great aftermarket solution: a real fuel cell (e.g. Radium, Fuelsafe) with a Fuel Cell Surge Tank (Ti 285 lift pump, dual Ti 285 FST pumps), would solve all fuel tank supply issues up to the engine bay (pre HP pump, cam and injectors, etc). The price of a FC and FCST is not THAT much more than one of these inadequate in tank kits from Fore. The cell has foam that stabilizes fuel movement, and you can install a big cell sized Hydramat on the lift pump if you want to go really far. And if you sell the car you can easily remove and install in your new car. |
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