02-08-2024, 03:45 PM
I suspect we could have a long debate about how to measure coolant temperature, without gaining much practically.
Does it boil if you try to climb a steep hill? (do you have any steep hills nearby?)
In practice, I don't think it much matters which kind of core you have as long as there is adequate coolant capacity and the cooling passages are all clear.
What can happen, in my experience, is that
(a) the radiator can become restricted due to build-up of limescale etc.
(b) likewise, the cylinder block water jacket can become choked by deposits
© the side water manifold at the cylinder block can become choked with debris and
(d) depending on your specific installation, the radiator hoses can get kinked and inhibit flow.
(d) is easily checked
© is fairly easy to check and fix; but you need to remove the manifold, don't rely on flushing through from the hose outlets
(a) and (b) respond to radiator de-scaler treatment and copious flushing (but I then advise to check © again, as this treatment can cause the side manifold to become blocked).
Finally (b) is best addressed at next engine re-build, by carefully raking out all the block passages with bits of wire etc; or possibly by filling the jacket with citric acid and de-scaling it at a component level. Or both.
There are other factors which could cause your car to run hot - e.g.
- Is the ignition timing correct?
- Do you have the correct fan fitted?
Does it boil if you try to climb a steep hill? (do you have any steep hills nearby?)
In practice, I don't think it much matters which kind of core you have as long as there is adequate coolant capacity and the cooling passages are all clear.
What can happen, in my experience, is that
(a) the radiator can become restricted due to build-up of limescale etc.
(b) likewise, the cylinder block water jacket can become choked by deposits
© the side water manifold at the cylinder block can become choked with debris and
(d) depending on your specific installation, the radiator hoses can get kinked and inhibit flow.
(d) is easily checked
© is fairly easy to check and fix; but you need to remove the manifold, don't rely on flushing through from the hose outlets
(a) and (b) respond to radiator de-scaler treatment and copious flushing (but I then advise to check © again, as this treatment can cause the side manifold to become blocked).
Finally (b) is best addressed at next engine re-build, by carefully raking out all the block passages with bits of wire etc; or possibly by filling the jacket with citric acid and de-scaling it at a component level. Or both.
There are other factors which could cause your car to run hot - e.g.
- Is the ignition timing correct?
- Do you have the correct fan fitted?