Improving on Engine Cooling.

[XfireZ51]

Thx Phil. Good to know.

[Hog]

I had the 57 in a parade for Canada Day and with all that crawling around the old 283 got pretty warm. I had to do some neutral high idle/heater on action to cool her off. The strap in electric aux fan wasnt coming on. (It is easily removed for showing)




Has anyone ever taken a peak inside the water jackets/ passages of an LT5? A little bit of buildup in the water jackets, coupled with some crud builtup outside the rad, along with some bent fins can all add up to cooling that is off nominal.

There doesnt appear to be the extra "cooling reserve" in the C4's that there is in other GM vehicles. It is a sports car, not a tow vehicle, and is designed as such.

[PhillipsLT5]

Originally Posted by XfireZ51

Thx Phil. Good to know.

Temps are cooler & when it gets hot, start moving and temps come down very quickly with alum.

[GOLDCYLON]

Originally Posted by PhillipsLT5

Temps are cooler & when it gets hot, start moving and temps come down very quickly with alum.

Yep

[XfireZ51]

Fluidyne is in, coolant in and the engine is burped. Pretty interesting that once temps get to where fans kick on, temps drop pretty quickly from 178F to 170F and then seem to stay there.

[PhillipsLT5]

Win/Win

[Hog]

The Fluidyne is a 9 core rad, 90-92 was 5 core and 93-96 was 7 core. Does this sentence seem correct?


Cheapest I found was $510.

They even do the old downflow rads, maybe on my next 57.

[Dynomite]

Originally Posted by XfireZ51

Fluidyne is in, coolant in and the engine is burped. Pretty interesting that once temps get to where fans kick on, temps drop pretty quickly from 178F to 170F and then seem to stay there.

Are we or were we talking about a ZR-1 with LT5? (If so, what year?)

Which Fluidyne Radiator did you install?
Did anything have to be modified for fit the Fluidyne Radiator in the ZR-1?
What is the source of your Fluidyne Radiator and how much did the Fluidyne Radiator cost?
Which thermostat are you using?
What are your Fan On and Off Settings?
What was the outside Air Temperature when your coolant dropped from 178F to 170F?
How did you know Coolant Temperature was 178F and 170F?
Was your AC ON and how fast were you traveling during this test/demonstration?

[XfireZ51]

Originally Posted by Dynomite

Are we or were we talking about a ZR-1 with LT5? (If so, what year?)

Which Fluidyne Radiator did you install?
Did anything have to be modified for fit the Fluidyne Radiator in the ZR-1?
What is the source of your Fluidyne Radiator and how much did the Fluidyne Radiator cost?
Which thermostat are you using?
What are your Fan On and Off Settings?
What was the outside Air Temperature when your coolant dropped from 178F to 170F?
How did you know Coolant Temperature was 178F and 170F?
Was your AC ON and how fast were you traveling during this test/demonstration?

My 92Z
Not sure which Fluidyne other than it replaces stock C4 ZR radiator
No modification was required to make it fit. Shroud etc. all work as with stock.
Bought from Pete the Greek so maybe he can tell us what model it is. Believe it came from FUs car.
Thermo is 180
Fan On at 78C when under 12mph
Outside temps were in the low 80s
Car was in garage and idling. Ran up to 178d when fan kicked on. A/C was not on. Now that rad is replaced, I need to get A/C re-charged.

I may need to modify fan settings now that I have better cooling. Still want motor to maintain 80C temps enabling Closed Loop/Learn.

[PhillipsLT5]

Originally Posted by Hog

The Fluidyne is a 9 core rad, 90-92 was 5 core and 93-96 was 7 core. Does this sentence seem correct?


Cheapest I found was $510.

They even do the old downflow rads, maybe on my next 57.

They were pricey, I think they are no longer making them for LT5