Coolant caps
#3
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I personally would stick to the factory fitted 0.9 bar pressure cap….
The 1.3 bar cap is meant for use in motorsport & would allow for higher coolant temps to be reached without running the risk of the coolant boiling and/or being forced out of the system.
I wouldn't really recommend them for use on a road car (especially older ones) as it increases the load on the cooling system components to almost 1.5 times the norm, which in turn will lead to an increased risk of the hoses or radiator failing, coupled with the fact that the factory fit a 0.9 for a reason and there would be no benifit by running a 1.3.
The 1.3 bar cap is meant for use in motorsport & would allow for higher coolant temps to be reached without running the risk of the coolant boiling and/or being forced out of the system.
I wouldn't really recommend them for use on a road car (especially older ones) as it increases the load on the cooling system components to almost 1.5 times the norm, which in turn will lead to an increased risk of the hoses or radiator failing, coupled with the fact that the factory fit a 0.9 for a reason and there would be no benifit by running a 1.3.
Last edited by PeeVee; 15 March 2010 at 01:09 PM.
#4
#7
That's not particularly helpful advice. On an old car with fibre HG's, raising the coolant pressure without good reason in this manner is unnecessarily tempting fate. One of the reasons the later cars have a higher pressure cooling system is because they have MLS head gaskets instead of the fibre ones.
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#9
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i run a 0.9 cap and have a forged engine build im wondering if i should swap to a 1.1 bar one as my header tank wil never stay full it will alsway stay an inch or so from the top ive always put this down to wher eits runnign almost 400bhp the temp of the water will be increased so it get rids of what it does not need and find its level
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