Help With Thermostat Please!!!

[Bill M]

Originally Posted by JC

I'm wondering the same thing. For me, if something is superseded, then it's better to use the new item, because it's normally done for a reason. I know one early fix for series 1 AU thermostats was to drill a 3mm hole in the top to keep coolant flowing through at all times, so I figure the newer skirtless one is the answer to all the thermostat issues learned by Ford from E series through early AUs.

I have an AUII November 2001 build and there was a recall to drill the hole in the thermostat for them as well. I purchased a thermostat from ford and no hole, drilled it myself. Generally speaking, if you run 50% anti freeze anti boil in conditions that don't require it you may find your engine (inline 6) will run unnecessarily hotter.
cheers
Bill.

[snortingboost]

Originally Posted by JC

The problem is, they're both designed for it, so how do you know which one is the best for a particular application? Found this on drive.com, which seems to contradict aussieblue's advice, which may have suited E series cars, but it would seem that the original Ford thermostat (the longer one) actually caused problems on the AUs:

What to look for
Ford Falcon AU (1998-2000)
Engine and transmission
Premature radiator failure encouraged Ford to upgrade this particular item; the thermostat was also modified. There were some air-conditioning problems. Oil leaks from the front bolt in the timing case tended to occur fairly early and were repaired under warranty.

Link = http://www.drive.com.au/Editorial/Ar...leID=8611&vf=1

The modified thermostat came with no check ball, just a small hole instead, providing for a small flow of coolant to bypass the thermostat preventing thermal shock to the radiator side tanks during warm up. As a TSB we had to remove the thermostat, cut the check ball off, then refit the thermostat and paint the bolts. Seems to have done the trick as it preventing the radiator from thermal shock.

[Mechan1k]

AFAIK ... use the thermostats for the EGAS engines ... rthey have to allow constant coolant flow through the engine as the LPG converter needs to have this to stop the LPG from freezing in the converter.

[mik]

Originally Posted by Bill M

I have an AUII November 2001 build and there was a recall to drill the hole in the thermostat for them as well. I purchased a thermostat from ford and no hole, drilled it myself. Generally speaking, if you run 50% anti freeze anti boil in conditions that don't require it you may find your engine (inline 6) will run unnecessarily hotter.
cheers
Bill.

i wondered about the thermostat myself bill, i had a look at mine just to see if it was in good order when i replaced a holed radiator , my thermostat had a hole already drilled in it which save me drilling it myself, apart from the bypass thing i always thought it may aid in bleeding the system of air.