Today I got new Nismo Radiator Caps for my G37. Other than urethane in place of OEM black rubber I could not find any major difference. I did not weight them but seem little heavier.

Of coarse looks nicer too. Just having fun with little extra money.

 

How much?

 

$30 at Jeb Performance

 

I see thanks

 

They recomend you replace your radiator cap at 30K miles which to me is odd but I did the same thing and replaced it with the Nismo. Pretty sure its juts a stock cap with a sticker on it though..lol.

 

LOL at weighing the caps.

change at 30K miles? really?? Gotta change mine soon then.

I just got a cheapo ebay NISMO ones.... $10 baby!

 

hah right on, getting mine + nismo oil cap hopfully today!

 

I could do less if this forum does a group buy. They are sold to me by three caps. So lets multiply 3 time 30 members. Maybe under $10 each.
Nismo is actually Stock. Just better packaging though
Good Price, how much shipping?



I could probably do package deal

+

UNDER $25 SHIPPED if I can sell 30.

 

f you john, i would of waiting to buy mine if you would of told me about this!

 

OMG did you guys not notice the pressure differance between the 2. The stock on has an extra 7 KPa. thats 7000Pa OMG this will ruin the car.




















hehehe

 

^^^^ i put on my nismo cap, drove out of my drive way and my engine block ceased, radiator cap shot through the hood

 

THE NISMO is not the same has your OEM for G37. The NISMO is only rated at 1.3 the 370 and G37 are 1.37 so your decreasing the pressure.

Nismo radiator cap question~ please help - MY350Z.COM Forums

 

^^ i dont think nismo vs stock cap will really make an different in the car what so ever, its more of a look thing

 

There's gotta be a safety factor of about 20% on those ratings. So you're probably good to almost 1.5 MPa.

Just did some googling, and it looks like average gauge pressure is about 1 atm, so total pressure inside the radiator is about 2 atm. The cap is rated to over 10 atm. I think you're fine.

 

Unless I my understanding of safety factor is incorrect, 20% would put you at .15 MPa, not 1.5 MPa, which is about 1.5 atm if I remember my units conversions correctly, so if the pressure in the radiator is 1 atm gauge, then we are totally screwed.