Advice needed for Rev3 Turbo thermostat replacement

[steroy]

My over heating problem has returned. I have a replacement thermostat ready to fit, but would like some hints and tips please. Can't find anything on here.

Many thanks
Steve

[Torero]

Steve, I'd try replacing the radiator cap with a genuine Toyota one. This is fix that Woodsy discovered and has been used successfully by a number of TBers. Worth a try for a few quid.

[steroy]

Thanks, sorry but why would that help? High pressure cap?
Cheers
Steve

[Torero]

From what I recall [and I may be wrong] it releases at the correct pressure unlike a worn or copy aftermarket one, which stays closed at the optimal release point. PM him, he may be able to help.

[ukpaisley]

Not so much as the release of pressure, but on cooling the bad seal on the cap lets air in, this is bad !, no one like air locks ! The air lock can cause pump cavitation, hot spots and diff cooling resulting in a cracked block.

[steroy]

That all great information guys, but what about advice on the process of changing the thermostat?

Thanks again
steve

[Aware]

Last SWTurbo thermo I did(some years ago now) was a rev2...thermo is held in an ally housing on exhaust side of #1cyl(belt end) - and I had to get a long 6 point 12mm socket to remove it, IIRR(although you may not have to, as there's no oil filter to make things tight on a rev3)...but I can't find any pics anymore... :(

I also remember the OEM thermo itself being very impressively built(Toyota wanted £78, or something like that, for a replacement)...sorry I can't be of more help though!

:)

[steroy]

No advice on sealing the housing or using a gasket etc....
What about bleeding the system after? Can anyone help, can't be that difficult.
Cheers
Steve

[steroy]

Come on guys some words of wisdom please!!!!!!
Steve

[ukpaisley]

I use a 2 litre bottle on the rad cap and run the engine to get rid of air locks !!