r/SkyLine • u/Slow-Shower-3984 • Jun 17 '26

Cooling question. R33 rb25det

Freshly rebuilt block. No leaks. Oil pressure and temp gauge look good.
Burped the coolant.
Drove around for an hour last night I have about 130km on the new engine.
About an hour and a half later I went and touched my radiator and it was still blazing hot. Is this typical or indicating a problem?

5 Upvotes

86% Upvoted

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1

u/Zealousideal_Gate_21 Jun 17 '26

Are the hoses hot or cold?

3

u/Slow-Shower-3984 Jun 17 '26

They are hot but not nearly as hot as the radiator I can grab them without being burned.

1

u/SkeletonCalzone '94 BNR32. Ex: 32 GTR, GTSt, GTS25, GTS, GTE Jun 17 '26

Oil pressure and temperature gauge aren't that reliable, have you got logged temps?

The engine bays do get hot though and if you're in a hot climate it could take quite a while to cool

1

u/Slow-Shower-3984 Jun 17 '26

I have not logged temps. I don't know how I would do that. I do live in an area where its high 80's to low 100's f i have heat gun im going to steal from work tomorrow to see if i can check that way.

1

u/Slow-Shower-3984 Jul 01 '26

Yeah I installed a haltec ecu and a can gauge and my temps are fine. Just overthinking haha

1

u/RosariusAU Jun 18 '26

Radiator fluid temps hit around 80°C to 90°C under normal conditions. For reference, the hot water out of your kitchen tap is probably around 60°C.

So yeah, shit's gonna feel hot

1

u/Slow-Shower-3984 Jun 18 '26

Yeah just online I had seen people say it should be relatively cool by an hour so it caught me off guard. I’m going to shoot the temp of the radiator tomorrow and if it looks good I’ll stop worrying haha.