stayros32001
Low Mileage
First of all my setup
1500cc engine (custom EFI) 1.6 Head from Lancia
On a Fiat 128 / Zastava 101
With custom A/C setup
Thoughts about outdoor temp and outdated water cooling mechanism on our engines.
When our engines designed in Italy at late 60’s the max temperature was 32 Celsius (90F).
Now the top temperature in Italy is 40 Celsius (104F).
These temperatures are measured under a shadow and not at the road and at the asphalt. Also, at the summer traffic jam, when all the cars try to cool their radiators, more heat is produced. At 70’s there were no A/C cars (extra heat exchange from other cars).
Comparing the circumstances, our cars have to work in a very different and much more difficult world, than they used to.
So the past 50+ years everything changed. Our little cars and SOHC engines not at all.
I think that we should start considering how to cool our cars with a more efficient way.
I saw one other topic that someone used an electric car pump using the same routing to push cold water to the engine.
And in my honest opinion this routing is the first of our problems.
When the car idles at traffic, hot air is trapped between the back of the engine and the firewall. Exhaust Manifold placed between the end of the engine and the firewall ( FWD cars) increases more and more temp at the surrounding steel and after some time there is a no return point. Because even if the cars starts to roll out of the traffic, and engine block tries to cool through radiators fresh air, the buildup heat from the surrounding steel stops the engine compartment from really cool down.
This means that the pipe that is placed under the exhaust manifold and supposed to deliver cool water to the block, now delivers hot water, because hot air is trapped there and exhaust manifold can’t really drop temperatures. In reality exhaust manifold due to this builtup heat will be unable to cool down. This problem of course is huge when car is idling at the traffic jam.
So, pipe now pushing hot water instead of cold, in our engine block. None water pump, electric or mechanic will solve this problem.
Is it possible to change routing?
Maybe!
Most of cylinder heads have at the belt side an water port ( I believe for heater core, I do not use heater core) ( 1.4 and 1.6 heads do not have this port )
So the real question and the purpose of the topic is:
If someone places an electric pump at the lower radiator hose and push cold water through this port of the cylinder head (of course routing the pipes from the spark plug’s side of engine) and completely remove the mechanical water pump, will have better cooling results?
* mechanical water pump could be replaced with just an electric impeller like this:
1500cc engine (custom EFI) 1.6 Head from Lancia
On a Fiat 128 / Zastava 101
With custom A/C setup
Thoughts about outdoor temp and outdated water cooling mechanism on our engines.
When our engines designed in Italy at late 60’s the max temperature was 32 Celsius (90F).
Now the top temperature in Italy is 40 Celsius (104F).
These temperatures are measured under a shadow and not at the road and at the asphalt. Also, at the summer traffic jam, when all the cars try to cool their radiators, more heat is produced. At 70’s there were no A/C cars (extra heat exchange from other cars).
Comparing the circumstances, our cars have to work in a very different and much more difficult world, than they used to.
So the past 50+ years everything changed. Our little cars and SOHC engines not at all.
I think that we should start considering how to cool our cars with a more efficient way.
I saw one other topic that someone used an electric car pump using the same routing to push cold water to the engine.
And in my honest opinion this routing is the first of our problems.
When the car idles at traffic, hot air is trapped between the back of the engine and the firewall. Exhaust Manifold placed between the end of the engine and the firewall ( FWD cars) increases more and more temp at the surrounding steel and after some time there is a no return point. Because even if the cars starts to roll out of the traffic, and engine block tries to cool through radiators fresh air, the buildup heat from the surrounding steel stops the engine compartment from really cool down.
This means that the pipe that is placed under the exhaust manifold and supposed to deliver cool water to the block, now delivers hot water, because hot air is trapped there and exhaust manifold can’t really drop temperatures. In reality exhaust manifold due to this builtup heat will be unable to cool down. This problem of course is huge when car is idling at the traffic jam.
So, pipe now pushing hot water instead of cold, in our engine block. None water pump, electric or mechanic will solve this problem.
Is it possible to change routing?
Maybe!
Most of cylinder heads have at the belt side an water port ( I believe for heater core, I do not use heater core) ( 1.4 and 1.6 heads do not have this port )
So the real question and the purpose of the topic is:
If someone places an electric pump at the lower radiator hose and push cold water through this port of the cylinder head (of course routing the pipes from the spark plug’s side of engine) and completely remove the mechanical water pump, will have better cooling results?
* mechanical water pump could be replaced with just an electric impeller like this:
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