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R34 GTT OEM Radiator Cap

DraftySquash
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DraftySquash

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Looking to buy a new radiator cap for my Skyline because I think this one is shot. I've got the part# 2143001F02 and it seems this same part is also the radiator cap for the Nissan Sunny B13? 

https://goodstate.com.au/parts/72f01c08ec5ae1878e258c43e35b81aa?srsltid=AfmBOorhguaKBQN0nFfCaM7kjdreG3TrS4nbB3VWZWw8iFXGJtFP-jtw

I mean, the part number matches, so I'm inclined to not overthink it. These are some of the only guys in Aus I could find. Most radiator caps I find are 1.2 and I would feel more comfortable replacing with a stock 0.9 cap. I just wanted to get some kind of confirmation since their website does not show the RB25 or the Skyline as compatible. 🤷🏽‍♂️

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https://www.sau.com.au/forums/topic/485764-r34-gtt-oem-radiator-cap/
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DraftySquash Collaborator

DraftySquash

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I know this has been discussed before, but I can see the Fenix radiator is 1.1 bar. 
https://fenixradiators.com.au/products/nissan-skyline-r33-gts-t-gt-rfull-alloy-performance-radiator?variant=40947446251678

1. Should I be worried about the extra 0.2 bar pressure that will be going through the whole cooling system?
Car is just a daily, only time it goes over 3K revs is when I'm merging on the highway or sick of being stuck behind a slow car 🤣

2. If I'm so worried, do I just get a 0.9 bar cap? 

Kinkstaah Grand Master

Kinkstaah

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If you want to be pedantic and justify it. Higher pressure means it needs to be a higher temperature to boil over.

In the real world, it absolutely won't matter at all. You can also tell yourself that an alloy radiator can handle higher pressure than one with 20 year old plastic tanks (it will).

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Duncan Grand Master

Duncan

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Realistically, the biggest impact of the higher pressure cap in a daily car is a coolant hose that is on its way to failing will happen a little sooner due to potential for extra pressure in the system :)

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DraftySquash Collaborator

DraftySquash

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On 22/08/2024 at 12:35 PM, Kinkstaah said:

If you want to be pedantic and justify it. Higher pressure means it needs to be a higher temperature to boil over.

In the real world, it absolutely won't matter at all. You can also tell yourself that an alloy radiator can handle higher pressure than one with 20 year old plastic tanks (it will).

@Kinkstaah yeah might just be me being paranoid with how much can go wrong! 
 

 

On 22/08/2024 at 12:49 PM, Duncan said:

Realistically, the biggest impact of the higher pressure cap in a daily car is a coolant hose that is on its way to failing will happen a little sooner due to potential for extra pressure in the system :)

@Duncan Looks like I'll get replacement hoses for the radiator soon after the radiator then!!! 

 

@GTSBoy Is this the right radiator? It just says R34 and R33 so I'm assuming they all have the same radiator specs? 
I read in a guide that there is a sensor on the bottom left? Do those still fit as well?

Edited by DraftySquash
GTSBoy Grand Master

GTSBoy

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25 minutes ago, DraftySquash said:

Is this the right radiator? It just says R34 and R33 so I'm assuming they all have the same radiator specs? 
I read in a guide that there is a sensor on the bottom left? Do those still fit as well?

It should be. It's the only option (other than the cross flow, which you don't want, and the one with the shroud and fan, which is the same rad underneath anyway).

As to the sensor, I dunno. I think the spot for it is shown blank on their photos. You would be well advised to a) look on your own to see the sensor is there and that you therefore need to accommodate it, and b) ask Fenix what their provision is. You might need to drill and tap the hole, or they might do it on request or as a standard option or a delete option. (Mine is in an R32, so it's not the same thing, and I didn't order it anyway, so I don't know what we did for mine).

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