Radiator Cap

rnbboi · Post by **rnbboi** » Fri Jul 14, 2006 11:13 am

Hey guys,

I just got myself a new radiator cap, cos the old one is going.

anyway, ive noticed that there r various replacements caps - its like:

"0.9" and "1.1"

and no, they arnt the sizes lol...

so what's the difference between em, im guessing its related to pressure?

i bought the "0.9" one cos the original one was that...

ideas?

thanx

kid_dynamite · Post by **kid_dynamite** » Fri Jul 14, 2006 12:10 pm

Yea pressure.
0.9 and 1.1 would be read in 'Bar'. When pressure in the cooling system exceeds this, coolant would be diverted to the overflow bottle. A high pressure cap basically allows you to run your engine at higher temps than std before coolant is diverted...