180 vs 195 degree thermostat - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-17-2007, 12:58 PM   #11
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I don't know. There are two small holes, I don't know what size.

But even with my old Bonnie, I had a 180 with no holes, and it still took a while to warm up in the winter.
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Old 02-17-2007, 04:18 PM   #12
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I run a 160 year round....no problems....its warm enough for me even when its -2 outside I just let it war up before I drive it...
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Old 02-17-2007, 04:26 PM   #13
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Cast iron engines do take a while to warm up, even without the holes drilled into the T-Stat

Took me a good 5 miles at 37-38 degrees for the car to warm up...

By the time I hit the Main strech( 6/10 of a mile from here ) The engine was still cold.. Make a left and get going nice and easy... At 55 mph OD with Lockup... Funny to hear a cold motor go into OD with lockup and no heat yet... You can really hear the engine groan on a cold morning...

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Old 02-17-2007, 05:06 PM   #14
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I run 180 year around, but when it gets below freezing I cover up half of the radiator with a towel so it will warm up better. Otherwise it will never get up to operating temperatures. The ssei takes forever to warm up, even with the towel comapared to the se.
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Old 02-17-2007, 08:05 PM   #15
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It sounds like this is a generally good idea. Does that extend to the Northstar? (my other Bonneville)
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Old 02-17-2007, 08:09 PM   #16
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it would altho it doesnt need it as bad....an all aluminum engine dissipates heat much better than a cast iron one
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Old 02-18-2007, 10:32 PM   #17
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The only problem is that with a lower temp tstat, you may not get the engine hot enough to rid the moisture. Best thing to do when it is really cold outside, not make 1/2 mile trips. if you do, warm her up first. This will prevent future problems.
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Old 02-18-2007, 10:47 PM   #18
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I need to fix my thermostat, im sure its stuck open, do thay have all thes option at autozone?[temps] or just on the net
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Old 02-18-2007, 10:56 PM   #19
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autozone has got them.

these will work fine, and normally always do.

You can get specifically reinforced ones to prevent failure in the future online.

It is better to have it stuck open then closed...
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Old 02-21-2007, 10:47 AM   #20
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Two bonnies - it came stock with a 195 for a reason; put another one in there. And no drilling. That is just not necessary.
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