Has anyone run the Evans waterless coolant setup on an L98 vette?

Just thinking about building a maximum effort street small block that can run on pump gas. The LT1 vettes seem to respond so well to mods, and I partly attribute that to the reverse flow cooling system.

I started thinking of ways to get some of that improved cooling on an L98 vette. I have seen tests in magazines where cars make more power with the Evans coolant because you can run more ignition advance and run higher compression.
Here is their web link for more info: http://www.evanscooling.com/

I've always wanted to try this in a street/track car. It would be great to be able to plan an engine build with this coolant in mind. Maybe you ccould bump the compression from 10.5 to 11, or some known amount. And still be able to fill up with the 91 octane pump gas.

Anyone have input on this subject? :troll

 

hmmm, very interesting...

I wonder how much this stuff costs? :cool:

 

Went online to their web site.....still haven't made up my mind....all the info seems good....but I want to know if anyone has used this....I think I will order this set-up....What do you guys think???
:eek: :eek:

 

I've got it in my 383'd 89. (475hp/500 ft-lbs) and it _appears_ to be working fine. In fact, it's working a little too well.

I had the hardest time troubleshooting what turned out to be a timing issue (timed the car to a valve phasing mark on the harmonic balancer, rather than the REAL timing mark...made the car run at 4 degrees ATDC)

In a normal situation, the engine would have overheated almost immediately running like that. With the NPG+, it just spent a long long time getting up to about 255 degrees and just hung out there for awhile. I suspect it won't run _cooler_, it'll just be able to absorb and move more heat.

I need to add an oil cooler (the stock one couldn't be used with the higher capacity filter and the kickout oil pan) as the car had an oil heating rejection issue, but water temp hasn't been a problem.

I went with the full on C4 cooling kit (IIRC $1160), it includes a Griffen Radiator, a Larger high flow water pump with vapor bypass, and larger hoses. Since my car was a ragtop, it had a different crossmember and I had to fab up a different hose than one of the one's they sent in the kit.

Their customer assistance was great, and they promptly shipped out an elbow fitting for the vapor bypass that was accidently left out of the kit.

Looks a little like:

Oh yeah, I LIKE not having to worry about overheating...overheat is a good 100 degrees higher than regular coolant...and the ECM still goes whacko if the watertemp sees 260, even though there's no harm to the motor if the oil temp is reasonable...like less than 270


[Modified by RocketSled, 9:23 PM 12/7/2002]

 

Seems interesting, but I could spend my $1200 :crazy:elsewhere and be happy.

J :seeya

 

Hey, rocketsled, "Do not install until wiper motor installed." :lol: So true! I see your wiper motor has the eexact same "clearencing" that mine does. :D

 

Where did you get the idea that it cost that much??? :confused:

 

Good info Rocket.

What is the idea behind all the other upgrades besides the coolant itself? Is it just improved cooling all around? Or do you have to run components with higher flow for some reason that I am not seeing at first inspection?

Seems like the coolant alone would be helpful unless there is a viscosity difference that causes problems or something.

-Ken
Englewood, CO :confused:

 

from the catalog on the website. ~1200 for the c4 kit :crazy:

 

I did that incase my extremely helpful and talented mechanics staff came over to help. ;)

As it is, i STILL had to pull the superram to change out the injectors, and had to partially RE-Dis-assemble it when I discovered I forgot to lay the TV cable in the valley.

$1200 kit:

The previous radiator had alumiseal run through it to plug some holes in the old motor, and the old waterpump had a good 30,000 miles on it. At $20 a gallon for the Evans coolant, I didn't want to have to put a new water pump on the motor in 20,000 miles later.

So. If you need a new pump and a new 650hp radiator, going with the complete Evans kit wasn't much more money, and it's got larger diameter components to flow more coolant. (on the inlet side, it as 1 3/4 rather than 1 7/16). And if for some reason it didn't work, Evans couldn't point to a part that wasn't theirs and say they could help.

If the REST of your cooling system is healthy, I don't think you'd need the kit. But I've found in doing the ground up resto on a 120,000 mile car that I've ended up replacing what few old parts were on the car anyway.

 

Oh, I didn't poke around the site too much. I read the benefits, then went straight to the catalog and looked at the kits. If you can just switch coolant, then I'd definately be up to try this stuff, lol. From what I read, they made it seem like it wouldn't work well without buying the kit, but that's just being good salemen on their part.

Thanks for the clarification rocketsled.

J

 

Hey RocketSled,
What is the compression ratio of the SuperRammed stroker motor you are putting together? Can you go above 11:1?

Seems like if you had enough cam to bleed a little cylinder pressure, and the Evans Coolant to stave off detonation, you might be able to build an 11:1 or better street motor pretty easily. And it should be OK on pump gas. Especially for us high altitude guys where cylinder pressure is reduced by the thin air anyway.

-Ken

 

It's a 10.5:1 motor. I _coulda_ gone higher, but the overall goal was to make a motor that would build really good power and do it for a very long time.

As it was, the initial timing program was waaay too advanced and it had the motor detonating all over the place with premium. (Now, it's fine.)

The motor builder _did_ say the mill could take an additional 250hp shot 'tho.

:reddevil

 

Nice combo. Sounds like it makes great power.