Nismo Radiator cap
 

Just out of curiosity, what is the non-Nismo 370Z radiator cap rated at? The Nismo one is rated at 137kPa or 0.137Mpa. The Nismo cap (aftermarket) is rated at 0.13Mpa....or roughly 130kPa. So wouldnt the aftermarket Nismo one be at a lower rating than the OEM Nismo 370Z version?

I would assume that changing out the radiator cap to a lower Mpa rating would then lower the boiling point correct?

Just wondering. Figured that I would leave the OEM cap alone and not change it for a "nicer"..."prettier" shiny Nismo badged one.

Can someone please take a look under their hood to report on what the radiator cap rating is at please on a non-Nismo 370Z???

Bueller??? Anyone........????

Pretty sure it says on the cap doesn't it?

Actually a higher pressure cap raises the boiling point of coolant as it pressurizes the cooling system.

Yep I am sure that it says on the cap. Just wondering if the non-Nismo variant has a different cap rating versus the 137 kPa on the Nismo model. Hoping that another member would just post the rating that they can see on the cap for a comparison.

Victor-Yup to that as well too. Realize that it will raise the boiling point....its one of those things that I pulled off the old cap from my G35 which was a 88 kPa rating and hence the 1.3 would have been okay. Just that the Nismo 370 seems to have a really high 137 kPa rating. Thus making the 1.3 Nismo cap...a little bit lower now versus OEM. Since the stock 370 Nismo cap is rated at 1.37 bar.

my 09 touring sport states 137kpa on the cap. Hope this helps

YES!!!! Thank you. Much appreciated. Hmmm..if that is so, then if you replace the OEM cap with the shiny Nismo labeled one...you will be lowering your boiling point in your car versus raising it. Best to leave the OEM on and not change it out then.

Dear lord, radiator caps??? next theres going to be a ....Dude i just got a carbon fiber radiator cap for $100.00 and it gives me 20hp and makes me lighter post or thread....

Uhhhh yeah. It is actually more like 15.9...but 20hp is close enough. :tup:

Its actually from my old G35...just thought to maybe use it. The ratings have changed and apparently it is now technically underrated versus the OEM version. Thats all that I was asking about.

2012 nissan 370z no kpa labeled on the radiator cap but says 88kpa on the coolant resorivor tank cap?

but my carbon fiber radiator adds 25whp and -100lbs, i also got a carbon fiber dash cover so i can reduce weight by 20lbs and add 20whp plus i just added a sticker so thats another 200whp

:rofl2: