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What Is Your 1st Mod Going To Be ???

Anyone else ???

  • Yes

    Votes: 8 72.7%
  • No

    Votes: 2 18.2%
  • Maybe

    Votes: 1 9.1%
  • NO FREAKIN' WAY !!!

    Votes: 0 0.0%

  • Total voters
    11

W. WIllie

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"Per NPG............NOT recommended for "daily drivers"".

IIRR........... NACAR uses H20 at around 60 psi for cooling.
High pressure reduces boiling point.
50/50 mix allows boiling around 265F.

First Mod will be gauges I can read/need.
 

JNR

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"Per NPG............NOT recommended for "daily drivers"".

IIRR........... NACAR uses H20 at around 60 psi for cooling.
High pressure reduces boiling point.
50/50 mix allows boiling around 265F.

First Mod will be gauges I can read/need.
I'm going to copy most of my post from this same subject, different thread from a few years ago regarding NPG coolant:


I think this product is a solution to a problem that doesn't exist if you flush your coolant as recommended.

If the choice is adding a 50/50 mixture of tap water and engine coolant, I'd see the benefit, but modern coolant mixed with distilled water has the proper amount of corrosion inhibitors so I see no benefit with corrosion. Auto mfrs recommend flushing about every 3-5 years, and it is not that expensive. I think my Honda dealer charges about $80. I've changed it once in 165k miles.

If people flush with tap water mixed with coolant, or if you just use distilled water alone that could cause a problem. Tap water has impurities that will coat the cooling system and will deteriorate the cooling capacity and also can start corrosion of the internals. Distilled water alone will also look to pull minerals into it's solution, so it will also eat away at the materials in the engine cooling system, but I don't know anyone using distilled water alone in their cooling system. At auto stores they even sell engine coolant premixed so DIY'ers can do it themselves without worrying about the proper mix.

The boiling point is a moot issue for a properly working/maintained car. If a system is designed to run under pressure then who cares if someone designed a coolant that can run at lower pressure. IMHO, it is a red herring selling point.


Evans coolant is essentially some form of 100% glycol. The viscosity of this stuff is about 10x a water/ethylene glycol mixture and it's heat transfer capability is less. They sell a few products, but one of them, the NPG, is essentially just 100% propylene glycol. The water pump and radiator in any car are designed for a certain amount of flow and heat transfer, maybe this stuff happens to work good enough because the water pump and radiator are sufficiently oversized that people don't see problems but I still fail to see the benefit.

The only cooling system failure I've ever had was on a 20 year old pickup truck when the T-stat froze shut on scorching hot day. Took the sucker out and drove until I got to a parts store to buy a new one. I'm not sure the biggest problem we're going to have with the Elio is engine cooling system problems due to the type of coolant provided from the factory.

When I design pumping systems at work, just changing from a 100% water system to 30% glycol system usually requires pump selection motor hp increases and the efficiencies of the heating/cooling devices and heat rejection devices all are reduced, so the terminal units usually need to be increased in heat transfer surface area. Even though this is a car, it is still just a HVAC system except the heat is rejected from a cylinder block instead of a boiler, evaporator, or condenser barrel.

Evans recommends you completely flush your whole system almost bone dry before you introduce their coolant. Again, I don't see the cost benefit here.
 

NSTG8R

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I'm with Seth on some strategically place reflective tape for visibility to other drivers...to be replaced at a later date with some LEDs.

Full belly pan, if not offered as an option from EM.

Making high quality molds of the hood,back hatch, and wheel fairings ASAP [while the finish is as good as it'll ever be] to allow for future modified panels without altering the originals. Won't know until I weigh them, but I'm betting I can make them lighter. SMC has a much higher resin content than what I have planned. Lighter = slightly improved mpg.:D
 
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