Cooling system pressure on Ace

[alexG]

Anyone know the correct rad cap pressure on AC engined Ace please? Currently have fitted a 4psi commercial vehicle type low pressure cap. Is the Bristol different?

[Klassik Metall]

As far as I'm aware the AC engined cars were fitted with 4lbs caps & the Bristol variant 7lbs.
   
   Regards Luke.

[alexG]

Thanks Luke, so looks like what I have is correct, i just need to order a new one as the current is so knack**ed!