Massive Power Loss Whipple Gt

[GT Tech]

Just my 2 cents here, but did anyone check to make sure the intercooler pump is working? It's easy enough to check. Just pull the front tub, and put your hand on the pump. There is a short delay after starting the car (40-50 seconds I think) before the pump starts to run.

Never hurts to start with the basics. :thumbsup

 

[everetto]

Just my 2 cents here, but did anyone check to make sure the intercooler pump is working? It's easy enough to check. Just pull the front tub, and put your hand on the pump. There is a short delay after starting the car (40-50 seconds I think) before the pump starts to run.

Never hurts to start with the basics. :thumbsup

Will there be a "vibration" that one can feel? If so, is it barely detectable, or easily felt? I have tried this before and am not sure I felt anything (I was wondering if my pump was running, because the coolant tank is never warm). But having said that, the car has never felt down on power either.

 

[paulo5656]

Will there be a "vibration" that one can feel? If so, is it barely detectable, or easily felt? I have tried this before and am not sure I felt anything (I was wondering if my pump was running, because the coolant tank is never warm). But having said that, the car has never felt down on power either.

Look into the coolant tank. You can see the water flow(with the cap off).Normal driving,the water does not go above 115 F.I installed a device to measure temp. in the coolant tank.

 

[ladams1]

Power lost

Wow, thanks for the analysis. Might still be a good idea for 1/4 mile, or 1 mile runs.

So, I guess some solutions to the problem might be, change ic coolant to water only, additional heat exchanger, lower boost(less heat), fluid inter cooling-either nitrous or water/alcohol, cooler running fuel-e85, fan in the engine compartment, etc.

Out of all of the ideas, I like water injection the most. Usually used for detonation suppression, but in this case its primary purpose would be, to cool the charge air. Water has a very high specific heat and would draw mucho heat out of the charge air and engine. No need to use alcohol and be concerned about it's reaction with aluminum. There are many kits available that read boost and only begin to spray at a certain boost pressure. Could also be temperature and boost activated. What do you think?

If you are thinking of changing your antifreeze with water I would not do that. It goes away from goodness. Anitfreeze has a higher specfic heat than water which is a fancy way of saying it carries away more btu's or heat than water.

Lee

 

[californiacuda]

Antifreeze has a LOWER specific heat than water and is used for freezing protection and corrosion resistance.

 

[californiacuda]

Water specific heat 1 btu/lb. Ethylene glycol specific heat .6 btu/lb.

 

[BlackICE]

It is probably a good idea to thin out the anti-freeze. Maybe a 20% mix vs. the 50%. You have to have some even if you don't worry about freezing for corrosion protection and lubrication. I heard about water wetter but don't know how well that stuff protects and lubricates.

 

[californiacuda]

I just looked on water wetter web site, lots of charts. I wonder if it would be worth a try to change ic fluid from stock to water with water wetter, might show some substantial improvement.

 

[Silverbullitt]

The cobra crowd could purchase a Fluidyne heat exchanger. this drops the intercooler temp about 50 deg under load. Prolly not available for the GT. All it is is a larger and thicker unit. It might be worthwhile to ask them to see if they have anything in R&D.

http://www.fluidyne.com/pl_intercoolers.html

 

[427Aggie]

FUnny Cuda...I just tried to post that and the internet went screwy on me.

I was told, can't remember, that changing the fluid in the intercooler too distilled and 2 bottles of water wetter was getting about a 30 deg swing.

matt

 

[californiacuda]

So, I guess we have a couple of good options for ic improvement. H2O with water wetter, and larger heat exchanger. Good news!

 

[50 BMG]

I was racing around with a friend with a modded GT2 and after some hard driving it was total obvious something was wrong.

Tell Joe to slow down if you can't keep up :lol



I had the same problems with my cobra at similar boost levels out here in the Phoenix heat. A better H/E and a larger capacity I/C tank helped a bunch...

 

[gtkurt]

Tell Joe to slow down if you can't keep up :lol

SECC run to Payson this Sunday if you want to see the GT vs GT2 in action.
You should come out.

 

[ladams1]

Water vs antifreeze

Antifreeze has a LOWER specific heat than water and is used for freezing protection and corrosion resistance.

Specific Heat Capacity of Water-Antifreeze Solutions
Specific Heat Capacity (J / g / ° C) ANTI-FREEZE = Ethylene Glycol Solution (% by volume)
Temperature (° C) 25 30 40 50 60 65 100
-40 4.19 4.19 4.19 4.19 2.85 2.94 4.19
-18 4.19 4.19 3.47 3.27 3.03 2.93 2.26
4 3.82 3.73 3.54 3.33 3.13 3.02 2.35
27 3.86 3.78 3.60 3.41 3.21 3.11 2.47
49 3.91 3.83 3.66 3.48 3.30 3.20 2.56
71 3.93 3.87 3.73 3.56 3.39 3.29 2.68
93 3.99 3.92 3.79 3.62 3.47 3.38 2.76
116 8.37 8.37 8.37 8.37 8.37 3.47 2.88
138 8.37 8.37 8.37 8.37 8.37 8.37 2.97


You are right about water versus antifreeze and specific heat. I looked it up and the graph I found indicates you are correct.

Sorry should have looked it up.

Lee

 

[californiacuda]

No problemo, I think most people think that antifreeze cools better than water.