Header Tank / Coolant System - Pressure Rating

[f0xy]

Is there a specific rating that the clio coolant system runs at?

Reason I ask is im re-locating my header tank. Ive found one from a 2.0 Fiat thats the perfect shape for what I need, with two connections. One large and one small one at the top exactly the same as the 172 header tank.

Am i correct in saying I should not have a problem with this, are all coolant systems generally run around the same pressure? Its near enough the same capacity, although my cooling system is very minimal, with no heater matrix etc.

Anyone come across this before?

 

[geesus69]

i thought the caps were rated differently for certain engines?

arent the williams and 16v caps different (blue and brown colours?)

 

[matty172cup]

i wouldnt have seen this being a problem due to people who have the shortened rad kits for there throttle bodies obvesously lose capacity in the cooling system but they run fine