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Old 06-12-2003, 17:40   #1 (permalink)
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Where to drill hole in thermostat??

Where exactly do you drill the hole in the thermostat to stop the bouncing temp gauge problem??

Is it just on the top plate of the thermostat (looking from top down) or on the side somewhere? Also you put it at the 6 o'clock position right?

Dan..
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Old 06-12-2003, 19:05   #2 (permalink)
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Stick it anywhere on the metal plate bit that the rubber seal goes on, just make sure it's inside that seal. And remember to make the hole pretty small... I used the smallest drill bit(bout 2mm diameter) i could find and the jumpy temp guage is gone for me.
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Old 06-13-2003, 02:37   #3 (permalink)
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Yeah thanks mate - I found out where to drill it soon after I posted from some random website out there.. Autobarn sells thermostats with holes in em I found out today..

Anyway I drilled the hole in a used (but tested and working) 82 degree thermostat just to see how it goes.... 2mm hole, might have been a smidge smaller..

Well the needle does still move a little - but only 1mm or so - and thats good enough for me.. Now I just have to do it to the 92 degree one I have so my car runs in the proper range.. I also got a 5L bottle of Nulon Long Life coolant and 10L of distilled water so I am gonna flush it at the same time...

Never done it b4 but I'll see how I go..

Dan.. thanks donuts...
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Old 06-13-2003, 15:21   #4 (permalink)
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Dan,
Before you do any reverse flushing, drain the coolant, fill with plain water and drive it around with the heater on for a while. drain, refill with plain water +Nulon radiator cleaner, drive, drain, refill with plain water, drive, drain, then reverse flush the radiator, then add your long life coolant. (Don't get the engine to hot, as you are adding cold water to it)

Long and slow, but oh so clean.

Don't forget the coolant is poisonous to cats, so leave some out where they can get some :)
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Old 06-14-2003, 02:03   #5 (permalink)
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A mechanic is doing it now so I won't have to worry bout it for a while... More in the other thread...

Engine block drain plug

Thanks anyway guys...

Dan..
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