Hello all,
I realized while cleaning my engine that my car runs with a 1.1 cap. It’s probably been the case for many many years. .9 is the factory spec.
What are the views on this?
Best
Pierre
Radiator cap .9 or 1.1?
Radiator cap .9 or 1.1?
1966 330 GT #8941
1968 300 SEL 6.3
1968 300 SEL 6.3
Re: Radiator cap .9 or 1.1?
Hi Pierre,
A higher pressure cap increases the boiling point of your coolant, and it also puts more pressure on the system, so it can cause leaks. You can go back to stock or leave it alone if you haven't had any problems.
Tom
A higher pressure cap increases the boiling point of your coolant, and it also puts more pressure on the system, so it can cause leaks. You can go back to stock or leave it alone if you haven't had any problems.
Tom
'63 330 America #5053
Re: Radiator cap .9 or 1.1?
Pierre: What model Ferrari do you have? Different models used different pressure caps.
Re: Radiator cap .9 or 1.1?
I have a séries 2 330 GT.
I have to admit I never checked the radiator cap…
Then I need to clean it up and it occurred to me it’s been with this cap for a long time!
I have to admit I never checked the radiator cap…
Then I need to clean it up and it occurred to me it’s been with this cap for a long time!
1966 330 GT #8941
1968 300 SEL 6.3
1968 300 SEL 6.3
Re: Radiator cap .9 or 1.1?
Correct cap for your car is .9 bar (13 psi). The Italian caps are available from a number of sources.
Re: Radiator cap .9 or 1.1?
Not to point out the obvious, but there may be people who don't know, on SII 330s, the cap on the radiator is a simple rubber gasket, while the spring loaded pressure cap is installed on the expansion tank down in the front of the car in front of the radiator. The hose that goes between the radiator and the expansion tank is pressurized. Earlier SI 330s have the pressure cap installed on the radiator and the over flow tube drains to the ground like the 250s.
You can run the car with the pressure cap at the radiator on the SII cars, but it will not work as it was designed with the expansion tank.
Tom
'63 330 America #5053