Vy Radiator Cap/Kpa

[Asa Spades]

Hey guys,
I just got a new chrome radiator cap because the old one wasnt holding in the pressure properly. The old stock radiator cap was 15psi, max 135 KPa...the new cap is a 15psi, max 100 KPa one.
The new one fits a treat and is made for holdens...but im just wondering what KPa means and if the new one will do the job not being a 135KPa like the old one.
Cheers

[alien]

KPa is a unit of pressure. It is Kilopascals. Pascal being a measurement of pressure.

135 KPa is equivelant to roughly 19.5psi.
100 KPa is equivelant to 14.499999999999998psi (close enough to 15).

[Asa Spades]

Ahh thanks mate. The old cap also said "Only use on a 135 Kpa system"....and the new cap is only 100 KPa. So im hoping the new cap will do the job...

[alien]

Should be fine, the max rating is only in the worst case scenario. If it hits over 135KPa there's something wrong anyways so you'd want to get it checked out.

[Asa Spades]

Ohhh i see. Yeah i had to get a new cap because i got it back from a service last week and the mechanic filled the radiator resevoir tank up, i drove it home and within 5 minutes there was water leaking everywhere, it was coming from the overflow pipe. I rang the mechanic and told him what happened and he said the cap must not be holding the pressure in properly with all the new water in the res tank. Didnt effect the engine temperature in any way though because the res tank was only returning to how it used to be. So hopefully with this new cap the resevoir tank can be filled properly lol

[TonyGill]

I just bought a new VY Commodore V6 auto radiator but have found that it is not the same as the original. The original radiator has moulded clip brackets that hold a full width core (for the airconditioner I think) in front of it, also the inlet tank is larger than that on the new radiator. Can anyone tell me if there are different radiators for the VY and if so are they readily available?

Many thanks