So should i repair my old radiator and keep it in case? Can a place actually do that? It was the top plastic part by the thermostat the cracked.

 

did i say thermostat?? wooooops i mean the radiator cap

 

I would just toss the old radiator. Thats what I did...

Your filler neck cracked.

You will need a rad cap, and if you are replacing the radiator now, you might think about replacing the radiator cap and thermostat right now while you do the radiator.

rad cap = $13, T-stat = $20

If you have ~100K miles I would recommend changing them all while you do the radiator.

Not much extra effort and will ensure you don't have a problem with those in the future.

 

yeah i do have a new thermostat installed...thanks my peoples. HEY....should i get a NISMO radiator cap?? would that make a BIG difference or is it a was of money??

 

OEM 300ZX TT cap is half the price and comparable... how much difference you will notice over OEM G cap is probably negligible... but combined with other small efforts (t-stat, water wetter, etc) it will help keep thing cool which is good for performance and longevity. Every little bit helps

 

+1

1992 OEM 300ZX rad cap is 1.2 bar (~16 psi) at $13
Nismo rad cap is 1.3 bar (~17 psi) at $50

the difference is minimal and for the price, go with the 300ZX one from NISSAN

 

any one has issue for stillen radiator? i been put this for about 3 month sometime i pop the hood bottom tank has small leak. i can not even tell coolant loss always stay full once a month i clean them with clean water same time i change upper and bottom hose to samco and tight with screw clamp.i think lost about 1 oz per month. i can not found leaking but i open hood once a while green coolant on bttom tank.i never had over heating.i had greddy cap . maybe too much pressure for na engine.

 

huh??

 

I think he's saying his overflow tank has a slight leak?

Either it has a hairline crack and is seeping - or it’s too full and when the rad overflows, the fluid is coming out of the side opening at the top of tank?

 

^^^ apparenly thats not the case...

I guess it the rad itself that has a leak?
https://g35driver.com/forums/4473225-post53.html

 

Ya yu'll blow a head gasket 2...

 

it's on bottom of radiator tank. some time when i drive very hard with ac on i see green on bottom tank. not the reservor tank . always stay max and low .i may have to change stock radiator cap . greddy cap too much pressure for na car.

 

^^^ other than that, you say the fitment is good right?...

 

other wies ok. but you need trim alot in your intake if stillen. pop or cold intake ok.it will take 2 hour . instal radiator 30min trim that other part about 2 hour. anf you need 2 gal nissan coolant and 2 gal water.i use about 15qt.or just pay auto shop for abound $50. maybe better.one more just use stock cap just incase they come with cap but look junk. that's way i put greedy.

 

Today i will be installing my radiator.....how to i "burp" my car when i put new coolant in it? and since i disconnect the Tranny hoses...will i have to "burp" it too? Just need to make sure i do this correct.