can you run 100% water in the summer? i just did a flush and my new radiator is on the way. but i need the car tom. is ok to run it like this for 1 day?

 

if its ice water

 

It's OK. Just make sure you flush it out and replace it with a Honda coolant/water mixture as soon as you can.

 

100% distilled will keep it cooler than any coolant. It probably isn't going to be good long term but a few days or weeks isn't going to matter

 

just curious, shouldn't it evaporate?

 

Just keep in mind that boiling point for water is 212 degrees, MUCH lower than a 50/50 solution, and what do you think would happen if the water boiled? It just depends on where that pressure is released first, whether it be your radiator cap or a coolant passage in your block.

 

I wouldn't run 100% water. If you want to do that, make sure you add some water pump lubricant. The water pump is lubricated by the coolant.

I use 100% distilled water and Red Line Water Wetter in my track car, as traditional coolant is not allowed. Water Wetter includes water pump lubricant. It works fine for me.

 

did you see any ECT drop Billy?

 

lol blake I need to put that **** about PMs in my sig too

billy what ratio of water to Water Wetter do you use?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">lol blake I need to put that **** about PMs in my sig too

billy what ratio of water to Water Wetter do you use?</TD></TR></TABLE>

it works, plus not being signed up for a long time helps too.

 

i know that a lot of people here use pure distilled water and 2 bottles of water wetter

 

My engine stays right around 180F to 200F with a Fluidyne rad, 100% distilled water, and 1 bottle of water wetter. This is at WOT for 20 minutes in the Texas heat.

I have no coolant lines outside of the engine other than the radiator inlet/outlet. The stock oil cooler has been removed and all coolant lines plugged. I doubt these changes make much, if any, difference in cooling, though.

Note that I do NOT run any ducting or radiator fans. I run a stock thermostat, and a 25 row oil cooler, although the oil cooler probably doesn't do much for the coolant temps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fast_honda &raquo;</TD></TR><TR><TD CLASS="quote">Just keep in mind that boiling point for water is 212 degrees, MUCH lower than a 50/50 solution, and what do you think would happen if the water boiled? It just depends on where that pressure is released first, whether it be your radiator cap or a coolant passage in your block.</TD></TR></TABLE>

water under pressure has a higher boiling point. that's why the coolant system is sealed.

 

Make sure you use distilled water if you decide to go the water+waterwetter/similar route.

 

will it rust or corrode the block with 100% water?

 

the block is aluminum so i doubt it will rust the block

 

Anything other than 100% distilled water will leave deposits in the cooling system.

 

For the short time no,It could if just water is used for a long period of time.Definately use water wetter or coolant in the summer,water alone will not stand up to the summer heat.

 

My understanding is the water pump is lubricated by the coolant (water, water/coolant, water/water wetter). If you run straight water, there is no lubricant for the water pump. You can buy water pump lube to add to 100% water, but I'd just use water wetter from Red Line.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lmananT &raquo;</TD></TR><TR><TD CLASS="quote">will it rust or corrode the block with 100% water?</TD></TR></TABLE>

 

The amount of water wetter is so little compared to the entire cooling system that I doubt there is much boiling temp difference between 100% water and 100% water + water wetter. Maybe 3 to 5 degrees F.

50/50 Coolant/water will raise the boiling temp about 11F. The pressure alone adds a whopping 40F to the boiling temp, so by far the pressure is the important of the two. http://auto.howstuffworks.com/cooling-system3.htm

I cannot run any coolant due to rules, and my engine has no problems cooling, but I use a large Al radiator too.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93sivtec &raquo;</TD></TR><TR><TD CLASS="quote">For the short time no,It could if just water is used for a long period of time.Definately use water wetter or coolant in the summer,water alone will not stand up to the summer heat.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fast_honda &raquo;</TD></TR><TR><TD CLASS="quote">Just keep in mind that boiling point for water is 212 degrees, MUCH lower than a 50/50 solution, and what do you think would happen if the water boiled? It just depends on where that pressure is released first, whether it be your radiator cap or a coolant passage in your block.</TD></TR></TABLE>

but when u pressurize the water the boiling point goes up. Therefore your boiling point is no longer 212