High pressure rated radiator cap = more pressure?

[IM-32-FK]

Hey all,

ive got a mishimoto radiator cap that is rated to 1.3 bar. The thing is whenever i replace it with my stock radiator cap( think it’s rated to 0.9 or 1.1 bar) I find a water hose/pipe leaking from somewhere.

so I have to ask if you use a radiator cap that is rated for higher psi , does this mean it builds more water pressure from the water lines and hoses? Or is it just a coincidence that whenever I put the 1.3 bar mishimoto radiator cap on, I eventually get a water line hose cracking open and giving way?

i was going to Nissan spare parts today but they are closed during the holidays. Can I just wrap the water leak on the hose with that stretchy silicon tape for the time being?

thanks

[Ben C34]

That's definitely what it means, higher pressure cap equals higher system pressure.

 

Silicon tape may work a little, but is obviously not a fix or suggested

[IM-32-FK]

1 hour ago, Ben C34 said:

That's definitely what it means, higher pressure cap equals higher system pressure.

 

Silicon tape may work a little, but is obviously not a fix or suggested

But what’s the advantage of having a high pressure in your water lines though?

[Ben C34]

23 minutes ago, IM-32-FK said:

But what’s the advantage of having a high pressure in your water lines though?

It does slightly raise boiling point of water. But that is not at all required.

[GTSBoy]

30 minutes ago, IM-32-FK said:

But what’s the advantage of having a high pressure in your water lines though?

As Ben said. But the main reason for higher pressure rad caps is to sell something to people who think that bigger numbers are better.

Although, those same people demand lower temperature thermostats! lolz.

[Duncan]

There really isnt a big difference in pressure with a 1.3 bar cap, so if using one causes leaks, it is time to replace the hoses anyway as they are on their way out (or, even easier, hose clamps might just need to be nipped up a little tighter.