Cooling System

[Stinky Rooster]

I took my car for a drive yesterday and with no warning at all it decided to get a bit hot on me (about 3/4 on the gauge)

It didn't use any water and after a couple of hours parked, and a thorough check of the cooling system including an air bleed check I took it for another drive and it is all good now.

This leads me to believe the thermostat has stuck closed.

So, I am going to replace it this week and do a complete coolant flush while I have it out. My question is this -:

1) What temperature range should I be looking at for the thermostat opening?

2) The S1 Stagea has a series 2 R33 RB25 - does anyone know for sure what year this was available? - my local parts supplier only has listings for the skyline? (there are a few different temp's available, I just want to make sure I get the right body)

[Stinky Rooster]

OK, thanks to the shared wisdom of a select few (read - one) I have the answers.

The thermostat is the same for the S2 R33 Skyline, which was 1996-onwards.

The normal opening temp is 76.5 deg C

Nismo apparently do an early opening version that opens at 62 deg C.

[GTS-t VSPEC]

Dale, Unless your having overheating issues, then stick to the standard one. If you do need a Nismo one then I have one still in it's box