To drill or not to drill - 180 themostat in an NA - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

To drill or not to drill - 180 themostat in an NA

Reply

 
 
 
Old 11-28-2006, 07:24 AM
  #1  
DINOSAURUS BOOSTUS

Expert Gearhead
Thread Starter
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default To drill or not to drill - 180 themostat in an NA

Originally Posted by charliemax
".... I wasn't going to believe him and was waiting restlessly to get past the warranty so I could put on an aluminum LIM and Dorman plenum.

The Pontiac guy was great. Seriously, I gave him bare facts and that'* it. I wanted as neutral opinion as I could get from a dealer. He comes back with a grand slam. He gave me a written estimate for @ $750. It didn't itemize, so thermostat and oil change would probably add. I want to put in the drilled 180 as soon as it goes off warranty anyway. "

.


Why are you contenplating a drilled 180 thermostat? Your car isn't supercharged. A regular 180 without drilling should be more than adequate. If you drill, you run the possibiliity of not heating up enough.
BillBoost37 is offline  
Reply With Quote
Old 11-28-2006, 01:23 PM
  #2  
Senior Member
True Car Nut
 
Join Date: Mar 2005
Posts: 2,689
Thanks: 0
Thanked 0 Times in 0 Posts
dillcc is on a distinguished road
Default

I've got a drilled 180 and it sure seems fine to me. My aeroforce has me sitting at 179-180 at cruise...
It obviously takes longer to warm up, but I don't think 5-7 minutes is crazy. It should be easier to bleed any air out of the system with holes at the 6 and 12 position I would think.
dillcc is offline  
Reply With Quote
Old 11-28-2006, 08:01 PM
  #3  
Senior Member
Posts like a Northstar
 
charliemax's Avatar
 
Join Date: Jan 2006
Location: Valley Forge, PA
Posts: 598
Thanks: 0
Thanked 0 Times in 0 Posts
charliemax is on a distinguished road
Default

Originally Posted by BillBoost37
Why are you contenplating a drilled 180 thermostat? Your car isn't supercharged. A regular 180 without drilling should be more than adequate. If you drill, you run the possibiliity of not heating up enough.
Purely superstitious behavior by me. I have a single tapped 180 in my '95. I did it when I first did the BC tuneup and realized later I had misunderstood the application. With the tuneup, the stat, a slightly different modified air box, the car is performing great. it is so agile and light underfoot that I don't want to change anything. And it runs nice and cool under summer conditions.

It did it later last winter. If the heat up is an issue in the coming season, i'll drop in a plain 180.
charliemax is offline  
Reply With Quote
Old 11-28-2006, 08:58 PM
  #4  
PopaDopaDo
True Car Nut
 
popatim's Avatar
 
Join Date: Jan 2005
Location: NY
Posts: 4,957
Thanks: 0
Thanked 0 Times in 0 Posts
popatim is on a distinguished road
Default

Why drop in a balanced thermostat and be done with it? Yes I realize that drilling your own is moe economical but a balanced thermostat has other benefits additionally, esp for you heavy footed sc guys and gals.
popatim is offline  
Reply With Quote
Old 11-28-2006, 10:33 PM
  #5  
Senior Member
Posts like a Camaro
 
Join Date: Nov 2002
Posts: 857
Thanks: 0
Thanked 0 Times in 0 Posts
Bugsi is on a distinguished road
Default

(I think it would be good to move the thermostat discussion off to its own thread.)
Bugsi is offline  
Reply With Quote
Old 11-29-2006, 12:43 AM
  #6  
Junior Member
 
Join Date: Aug 2005
Location: North of Buffalo, NY *** NEBF '05, '06, '07 *** ***ONBF & NYBF 06; 07*** ***WCBF 06***
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
singscountry1967 is on a distinguished road
Default

Originally Posted by Bugsi
(I think it would be good to move the thermostat discussion off to its own thread.)
Done...original discussion is here: http://www.bonnevilleclub.com/forum/...=750590#750590 in case anyone gets lost in the links...
singscountry1967 is offline  
Reply With Quote
Old 11-29-2006, 12:48 AM
  #7  
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
willwren is on a distinguished road
Default

Drilled 180'* will benefit an L36 in longevity and reliability as much as it will an L67 in performance. Maybe more.
willwren is offline  
Reply With Quote
Old 11-29-2006, 01:12 AM
  #8  
Senior Member
True Car Nut
 
toastedoats's Avatar
 
Join Date: Sep 2004
Location: Fitchburg Ma _ToastedRice_
Posts: 6,837
Thanks: 0
Thanked 0 Times in 0 Posts
toastedoats is on a distinguished road
Default

Originally Posted by willwren
Drilled 180'* will benefit an L36 in longevity and reliability as much as it will an L67 in performance. Maybe more.
i dont think a drilled 180 will benefit a NA 3800 any more than an undrilled 180...
toastedoats is offline  
Reply With Quote
Old 11-29-2006, 01:22 AM
  #9  
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road
Default

L36'*, just like L67'*, like being colder. Mine ran significantly better when it was colder (engine temps not air temps) then it did when it was warm. Going from a stock 195* tstat to a 180* tstat I noticed a good difference. Drilling the 180 would only help that much more. I really don't see a problem with it. Its not completely necessary, but neither is a colder thermostat at all.
dbtk2 is offline  
Reply With Quote
Old 11-29-2006, 09:33 AM
  #10  
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
willwren is on a distinguished road
Default

If you do drill, just don't OVERdrill. Make 'em small. The drilled holes help keep air pockets from being trapped.
willwren is offline  
Reply With Quote

Thread Tools
Search this Thread
Quick Reply: To drill or not to drill - 180 themostat in an NA


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

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.