180 degree thermostat? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-29-2003, 11:35 AM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2003
Location: Long Island, NY
Posts: 69
Thanks: 0
Thanked 0 Times in 0 Posts
tonyg is on a distinguished road
Default 180 degree thermostat?

I just bought a 1992 Bonneville SSE. Do I need to change the thermostat to a 180? The car normally operates at about 215. My mechanic says this is normal for these cars.
tonyg is offline   Reply With Quote
Old 05-29-2003, 11:39 AM   #2
Senior Member
True Car Nut
 
Join Date: May 2002
Location: Edmonton, AB Canada
Posts: 2,621
Thanks: 0
Thanked 0 Times in 0 Posts
DeathRat is on a distinguished road
Default Re: 180 degree thermostat?

Quote:
Originally Posted by tonyg
I just bought a 1992 Bonneville SSE. Do I need to change the thermostat to a 180? The car normally operates at about 215. My mechanic says this is normal for these cars.
It may be NORMAL BUT, if yours is NA & EGRLess like mine I would change it! Trust me! My engine now runs way cooler than it did before I switched to a drilled 180 T-stat!
DeathRat is offline   Reply With Quote
Old 05-29-2003, 12:28 PM   #3
Senior Member
Certified GM nut
 
Join Date: Apr 2003
Location: Davison,Michigan
Posts: 1,867
Thanks: 0
Thanked 0 Times in 0 Posts
russianpolarbear is on a distinguished road
Default

.Yeah goto auto zone and get a 180 therm. they are only 8 bucks and they work great?! they are easy to put in and you prolly need to redu your coolant anyways . Yeah youll be suprised by doing this how much of a differance it makes.
russianpolarbear is offline   Reply With Quote
Old 05-30-2003, 12:04 AM   #4
Senior Member
Posts like a Northstar
 
Join Date: Dec 2002
Location: Bellbrook, Ohio
Posts: 547
Thanks: 0
Thanked 0 Times in 0 Posts
compyelc4 is on a distinguished road
Default

tonyg,

You will be just fine with a stock 195 in your '92, but I guess a 180 won't hurt. Your emissions may run a little higher than with a 195, and your mileage may fall off a bit. She'* probably got a few miles on her doesn't she? If you must do the e-check thing in your area, and you have trouble passing, get back to that 195!!

I have 187,000 miles and have always run with a stock 195 thermostat. Typically I run about 200 degrees F year round. Recently though, I've noticed her hovering around 210-215 before the fans bring her back down. The little thermo is probably getting a little tired with 100,000 on her! She'* waaaay overdue. Time to change her out I guess.

One other thing, even though you do not have an EGR like my '92 also, you do have the nice aluminum upper intake. She'll handle a little extra heat just fine.
compyelc4 is offline   Reply With Quote
Old 05-30-2003, 12:54 AM   #5
Senior Member
True Car Nut
 
Join Date: May 2002
Location: Edmonton, AB Canada
Posts: 2,621
Thanks: 0
Thanked 0 Times in 0 Posts
DeathRat is on a distinguished road
Default

Quote:
Originally Posted by compyelc4
tonyg,

You will be just fine with a stock 195 in your '92, but I guess a 180 won't hurt. Your emissions may run a little higher than with a 195, and your mileage may fall off a bit. She'* probably got a few miles on her doesn't she? If you must do the e-check thing in your area, and you have trouble passing, get back to that 195!!

I have 187,000 miles and have always run with a stock 195 thermostat. Typically I run about 200 degrees F year round. Recently though, I've noticed her hovering around 210-215 before the fans bring her back down. The little thermo is probably getting a little tired with 100,000 on her! She'* waaaay overdue. Time to change her out I guess.

One other thing, even though you do not have an EGR like my '92 also, you do have the nice aluminum upper intake. She'll handle a little extra heat just fine.
Yeah the intake can handle the heat, BUT the Heads & Exhaust Manifolds CAN'T! The Exhaust valves burn out & the exhaust manifolds crack over time due to this excess heat generated by the EGRless engine! I've got one that has a burnt valve in cylinder #6 & a cracked manifold on the #3 bend too.
DeathRat is offline   Reply With Quote
Old 05-30-2003, 01:30 AM   #6
Senior Member
Certified GM nut
 
Join Date: Apr 2003
Location: Davison,Michigan
Posts: 1,867
Thanks: 0
Thanked 0 Times in 0 Posts
russianpolarbear is on a distinguished road
Default

True considering you have no EGR I would definatly go out and spend the 6 dollars for a new 180 therm. This 6$ part may save you hundreds of dollars in major engine repair due to massive heat.
russianpolarbear is offline   Reply With Quote
Old 05-30-2003, 03:43 AM   #7
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

180 therm and tranny cooler, definite first two mods. Just ask Will

Especially if you plan on adding more POWER
bonnie94ssei is offline   Reply With Quote
Old 05-31-2003, 12:08 AM   #8
Senior Member
Posts like a Northstar
 
Join Date: Dec 2002
Location: Bellbrook, Ohio
Posts: 547
Thanks: 0
Thanked 0 Times in 0 Posts
compyelc4 is on a distinguished road
Default

Thanks for the advice guys.

BTW, I thought these SSE'* already have a transmission cooler. Or are you increasing the size of the one you have?

I thought that was the small radiator mounted to the front of my standard cooler.

Regarding the 180, I'm going to pick one up tomorrow. Any suggestions as to brand to stick with?
compyelc4 is offline   Reply With Quote
Old 05-31-2003, 05:13 AM   #9
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

The SSEs and SSEi'* have one already but a second one is added protection. It can't hurt. I think http://www.grandprixstore.com has some.

I got a 180 t-stat from there too. It'* the Hypertech Powerstat.
bonnie94ssei is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
180 degree thermostat?...do I need to drill it also? tonyg 1992-1999 3 05-30-2003 08:06 PM
Is it OK to put a 180 degree thermostat in a 1996 Bonneville parallelcircuits 1992-1999 13 04-21-2003 03:15 AM
Modified 180 degree Thermostat. 2000SilverBullet Performance, Brainstorming & Tuning 5 02-11-2003 01:48 AM
180 degree thermostat Delirious0413 1992-1999 22 02-06-2003 04:03 AM
Why a 180-degree thermostat & extra trans cooler? BusMaster007 1992-1999 7 01-03-2003 08:06 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:03 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.