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Old 01-11-2018, 06:59 PM   #1
Packard
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1995 SL1
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Default Replacing thermostat is there a housing gasket?

i bought a thermostat for my 1995 sl1 series car with 225 k on odo . I bought this one https://shop.advanceautoparts.com/p/...rm=thermostats

this is as close as I could get to the 190 f mark . So my question is there housing gasket or is it just a thermostat gasket ??? Im a walking distance to autozone so if I need anything its a block from me.Do I need a gasket for the housing or is it just straight forward thermostat should already have the gasket and i just put that in finished . Will or 2 or 3 flushes with 10 min warmups and distilled water be fine then add the 70/30 mix

Last edited by Packard; 01-11-2018 at 07:04 PM..

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Old 01-11-2018, 07:32 PM   #2
SRGW
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Post Re: Replacing thermostat is there a housing gasket?

Watch this video by Richpin.
https://www.youtube.com/watch?v=dVLoeoDU5E8
The flushes will be fine.
1995 SL1 233,200 Well Oiled!!
1997 SL1 63,180 Just A Teenager!!
CHECK YOUR OIL!!

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Old 01-11-2018, 07:47 PM   #3
Packard
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Default Re: Replacing thermostat is there a housing gasket?

Which one of these retailers carries a good thermostat housing o-ring replacement for 1995 saturn sl1 ? Autozone ,Advance auto, oreily ?OR WILL THE OLD ONE WORK STILL?

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Old 01-11-2018, 08:10 PM   #4
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Post Re: Replacing thermostat is there a housing gasket?

As per your link to advance auto it states the o-ring is included. Do not use the old one!!

1995 SL1 233,200 Well Oiled!!
1997 SL1 63,180 Just A Teenager!!
CHECK YOUR OIL!!

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Old 01-11-2018, 08:19 PM   #5
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Default Re: Replacing thermostat is there a housing gasket?

I would go for any new one that fits. I would not reuse the old one.

...
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Rebuilt at 204,067 September 2017
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'98 SC2, 5SP bought 2018

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Old 01-11-2018, 09:07 PM   #6
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Default Re: Replacing thermostat is there a housing gasket?

Comes with. No worries. Buy Stant if you can.

-Robert

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Old 01-13-2018, 09:04 PM   #7
Packard
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Default Re: Replacing thermostat is there a housing gasket?

after installing the new t-stat I get to just past the halfmark like 9/16 mark . Im worried in the texas heat I might not can use this t-stat in summer. Am I running optimal settings and is running this 9/16 marks just over half safe on my block? My original stat always was cooler. But now I run half to 9/16 temps with outdoor temps at 32f .Im using a 188f t-stat now stant I never see any dips below half now. Is this safe on my block . Tommorow I want to see when my fan kicks in . Does fan kick in at 9/16 ??Im using brass temp design sensor .Yesterday I drove it over 30mins and it got warm fast to about 9/16 highest

Last edited by Packard; 01-13-2018 at 09:15 PM..

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Old 01-14-2018, 12:12 PM   #8
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Default Re: Replacing thermostat is there a housing gasket?

Quote:
Originally Posted by Packard View Post
after installing the new t-stat I get to just past the halfmark like 9/16 mark . Im worried in the texas heat I might not can use this t-stat in summer. Am I running optimal settings and is running this 9/16 marks just over half safe on my block? My original stat always was cooler. But now I run half to 9/16 temps with outdoor temps at 32f .Im using a 188f t-stat now stant I never see any dips below half now. Is this safe on my block . Tommorow I want to see when my fan kicks in . Does fan kick in at 9/16 ??Im using brass temp design sensor .Yesterday I drove it over 30mins and it got warm fast to about 9/16 highest
The best thing to do is measure actual temp in the reservoir on a warm day, and see how your gauge setting is compared to actual operating temp. On my car 1/2 is the 208-210 range.

I recently put in a Motorad unit hoping to get slightly lower temps from the NAPA unit I had in the car. It might be just a hair lower, but not as low as the unit that shipped from the factory.

I'm not a fan of the hotter units myself, as they reduce cooling system overhead. The fan had to cycle a lot less with the factory thermostat, and we get plenty of hot around here where I live. On my '95 the fan on point on the gauge is right about 3/4 or so, but this might vary some car to car.

...
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Old 01-14-2018, 12:22 PM   #9
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Default Re: Replacing thermostat is there a housing gasket?

Everything I could find said my old '94 Cavalier 2.2L required a 195f thermostat, so when it was running very hot I replaced it and everything else with another 195f 'stat. Stupid thing still ran hot (nearly 3/4 on the gauge!)...got fed up and found a 180f thermostat...ran where it should on the temp gauge, and everything ran better including slightly increased MPG.

Despite the FSM's saying the S-Series needs 190-195f thermostat's '91-'02, it is probably beneficial to test out various temp ones to see what works best for you. The motorad 'stats are smaller than OEM copies so any reduction in temp from those is probably negated from less flow >.<

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