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Radiator Cap

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Old 08-23-2001, 08:21 AM
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Hey group, found this Nismo radiator cap for $36 online. It raises pressure up to aboout 18.5 psi. Is there another option in this price range. Is it worth the money at all. In reading SCC it sounds like a worthy upgrade to the cooling system along with some Redline Water Wetter on the way.....Thanks in advance!
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Old 08-23-2001, 09:45 AM
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Won't that increased pressure just lead to a busted hose or radiator leak? It doesn't sound like a good idea to me.
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Old 08-23-2001, 10:06 AM
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I don't think so. The way I read the article in SCC, they installed the 300ZX radiator cap on their project Sentra and there were no negative benefits and only and increased cooling capacity which is positive. They indicated it was one of the cheapest replacements for cooling improvements.....Don't know for sure thogh...
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Old 08-23-2001, 11:15 AM
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Nismo

But, it's NISMO...BUY IT!!!

MUST.....BUY....NISMO....STUFF...
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Old 08-23-2001, 11:50 AM
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Maxima = .9 bar = 13.23 psi
Z = 1.1 bar (or was it 1 bar?) = 16.17 psi
18.5 psi = 1.26 bar

I'd be careful...
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Old 08-23-2001, 12:02 PM
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a cheaper alternative is to use the Z radiator cap. Its very cheap and the cap is about 2psi more then the Maxima one. id be worried about the Nismo one cause the car was designed for about 13lbs of pressure, if you put too much on some other things might fail. my friend uses the Nismo cap on his Z with no probs...dunno bout the Max
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Old 08-23-2001, 12:08 PM
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a cheaper alternative is to use the Z radiator cap. Its very cheap and the cap is about 2psi more then the Maxima one. id be worried about the Nismo one cause the car was designed for about 13lbs of pressure, if you put too much on some other things might fail. my friend uses the Nismo cap on his Z with no probs...dunno bout the Max
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Old 08-23-2001, 12:20 PM
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Originally posted by Y2KevSE
Maxima = .9 bar = 13.23 psi
Z = 1.1 bar (or was it 1 bar?) = 16.17 psi
18.5 psi = 1.26 bar

I'd be careful...
Good points, but I verified, the cap is .13 megapascals that translates to 1.3 bar to 18.6 psi.....Good question though
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Old 08-23-2001, 02:42 PM
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Originally posted by Turbo95Max
a cheaper alternative is to use the Z radiator cap. Its very cheap and the cap is about 2psi more then the Maxima one. id be worried about the Nismo one cause the car was designed for about 13lbs of pressure, if you put too much on some other things might fail. my friend uses the Nismo cap on his Z with no probs...dunno bout the Max
Actually this is the Nismo replacement for the 300ZX, that's what I was looking for. My thought is that if it works on a damn Sentra, surely it'll work on a Max....Somebody tell me that's a safe assumption.
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Old 08-23-2001, 03:42 PM
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Originally posted by srbarnes4ever


Actually this is the Nismo replacement for the 300ZX, that's what I was looking for. My thought is that if it works on a damn Sentra, surely it'll work on a Max....Somebody tell me that's a safe assumption.
It'll work on your Max..... until stuff starts breaking.
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Old 08-23-2001, 04:40 PM
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bye bye radiator.... *BOOM*
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Old 08-24-2001, 12:10 AM
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yes it will work on the Max. If you consider that fitting on the Max is working. Juss cause it fits, doesnt mean it works PROPERLY or SAFELY. I think that is what we are trying to get at rite now. I belive the Nismo cap is pushing the limits of the cooling system that MIGHT not be stout enough to handle that much pressure. Keep in mind if you never reach extreme water temps you wont benefit from the Nismo cap, 99% of the time the stock cap is enough, and then you can upgrade to the Z cap which is an improvement over stock. The Nismo one is prolly OVERKILL....
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Old 08-24-2001, 05:58 AM
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Originally posted by Turbo95Max
yes it will work on the Max. If you consider that fitting on the Max is working. Juss cause it fits, doesnt mean it works PROPERLY or SAFELY. I think that is what we are trying to get at rite now. I belive the Nismo cap is pushing the limits of the cooling system that MIGHT not be stout enough to handle that much pressure. Keep in mind if you never reach extreme water temps you wont benefit from the Nismo cap, 99% of the time the stock cap is enough, and then you can upgrade to the Z cap which is an improvement over stock. The Nismo one is prolly OVERKILL....
I understand where you're coming from on this. I just don't have enough info to assume right now that it is likely to reduce engine safety. I'll try to do some digging on a couple of fronts. #1 I believe the Nismo cap is rated at the stock Z pressure. I'll try to confirm that though. #2 my understanding (limited though it is!) is that the cap by raising static pressure in the coolant system increases the boiling point of the fluid by some amount,and as long as you don't have weak hose or seals there should never be a problem with an over pressure situation. As I said, in the Sentra article they put a stock Z cap (18psi) on a stock Sentra 1.6 liter(stock cooling system that is), not the legendary SR20DE motor. I just can't fathom that the Maxima radiator, hoses, water pump, etc. can't handle what the 1.6l can. But since I'm a newbie and defer to those wiser than I, I'll hold off on getting this piece until I get some better, more concrete evidence suggesting it will work in the long term. Thanks again for all the help!
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Old 08-24-2001, 06:20 AM
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Why don't you get a cool stillen one (yuck)
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Old 08-24-2001, 06:24 AM
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I believe the stock Z cap is 1.1 bar, which is about 16 psi.
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Old 08-24-2001, 07:22 AM
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Uh, fearless moderator, I stand corrected by your divine wisdom....I should have shut up when I had the chance, but the opportunity to be, at least for a short time, a post ***** was too difficult to forego! Now how 'bout a discount on a supercharger!!
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Old 08-24-2001, 07:26 AM
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Originally posted by srbarnes4ever
Uh, fearless moderator, I stand corrected by your divine wisdom....I should have shut up when I had the chance, but the opportunity to be, at least for a short time, a post ***** was too difficult to forego! Now how 'bout a discount on a supercharger!!
Trying to get smart with me ?

j/k
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Old 08-24-2001, 08:27 AM
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Originally posted by Y2KevSE


Trying to get smart with me ?

j/k
Hey how'd U do dat? I like....
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