Thermostat or no thermostat ? - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer Thermostat or no thermostat ?

Print Thread

Thermostat or no thermostat ? #347925 06/15/09 04:12 PM 06/15/09 04:12 PM
Joined: Aug 2005 Posts: 1,043 Motown, Mi P PAULS_340 OP super stock
PAULS_340 OP super stock P Joined: Aug 2005 Posts: 1,043 Motown, Mi	Is there an advantage to not using a thermostat? I don't need the heater. My '71 340 ran perfect without a thermostat at last weeks HotRod Power Tour ? Can I cause any damage? thanks in advance. Still looking for LM29H1B415501, '71 Demon 340

Re: Thermostat or no thermostat ? [Re: PAULS_340] #347926 06/15/09 04:30 PM 06/15/09 04:30 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	You should run a thermostat on the street. Normally, engines run best at a specific temp ( usually 180 to 200 ). Running on ether side of that range can cause multitides of issues, and none positive. Running a stat will get you in to that most efficient operating range as quickly as possible and help keep you there. Running without a stat will not cause immediate damage - un less you go in to major over-heat ( which can happen ). Fastest 300

Re: Thermostat or no thermostat ? [Re: PAULS_340] #347927 06/15/09 05:00 PM 06/15/09 05:00 PM
Joined: Dec 2007 Posts: 18,157 Mass DAYCLONA I Live Here
DAYCLONA I Live Here Joined: Dec 2007 Posts: 18,157 Mass	Running no stat, the water passes throw the radiator too fast, not disapating/exchanging heat transfer,.....so you could actualy run hotter,....or in some extreme cases you could run too cool, which isn't good for oil viscosity to properly lubricate and flow through out the engine,....if you feel you must run without a stat, there are "restrictor washers" avaliable, which basically look like a washer, you'll need to experiment with various sized orifices to acheive the desired running temp,....which should be around 190 degress IMHO,....if coolant flow/thermostat opening is a concern, drill a relief hole in the stats base before you install it, 1/16 up to 1/8, max 1/4" dia

Re: Thermostat or no thermostat ? [Re: PAULS_340] #347928 06/15/09 06:45 PM 06/15/09 06:45 PM
Joined: Dec 2007 Posts: 7,759 So Cal HealthServices Why would you even post that?
HealthServices Why would you even post that? Joined: Dec 2007 Posts: 7,759 So Cal	You always want to try to get the motor warmed up quickly with as little load as posibble. Motors wear the most when cold. A thermostat will get the motor up to running temp as quickly as possible Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.

Re: Thermostat or no thermostat ? [Re: HealthServices] #347929 06/15/09 06:52 PM 06/15/09 06:52 PM
Joined: Jun 2004 Posts: 91 Central ILL. T twister6 member
twister6 member T Joined: Jun 2004 Posts: 91 Central ILL.	I agree 2003 Ram3500 Quad4x4 2000 Dodge Avenger 72 Duster 68 Dart GT

Re: Thermostat or no thermostat ? [Re: DAYCLONA] #347930 06/15/09 07:04 PM 06/15/09 07:04 PM
Joined: Jan 2003 Posts: 3,623 Millinocket, Maine J JonC master
JonC master J Joined: Jan 2003 Posts: 3,623 Millinocket, Maine	Quote: Running no stat, the water passes throw the radiator too fast, not disapating/exchanging heat transfer,.....so you could actualy run hotter,... I don't believe people still believe this old wives tale.

Re: Thermostat or no thermostat ? [Re: JonC] #347931 06/15/09 07:43 PM 06/15/09 07:43 PM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: Quote: Running no stat, the water passes throw the radiator too fast, not disapating/exchanging heat transfer,.....so you could actualy run hotter,... I don't believe people still believe this old wives tale. Yes I can't believe how many people say that. In my 35 years in the auto service field I have never had a car run hotter without a stat. Ron

Re: Thermostat or no thermostat ? [Re: JonC] #347932 06/15/09 07:45 PM 06/15/09 07:45 PM
Joined: Feb 2003 Posts: 874 El Cerrito, by San Francisco L last426 super stock
last426 super stock L Joined: Feb 2003 Posts: 874 El Cerrito, by San Francisco	Quote: Quote: Running no stat, the water passes throw the radiator too fast, not disapating/exchanging heat transfer,.....so you could actualy run hotter,... I don't believe people still believe this old wives tale. I used to post and post about how this is not true. I finally gave up. The only way it could possibly be true is if without the stat it created cavitation sufficient to slow everything down. I don't think so. Kim

Re: Thermostat or no thermostat ? [Re: DAYCLONA] #347933 06/15/09 08:06 PM 06/15/09 08:06 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: ....if coolant flow/thermostat opening is a concern, drill a relief hole in the stats base before you install it, 1/16 up to 1/8, max 1/4" dia Fastest 300

Re: Thermostat or no thermostat ? [Re: last426] #347934 06/15/09 09:33 PM 06/15/09 09:33 PM
Joined: Oct 2007 Posts: 535 Ohio racerAL mopar
racerAL mopar Joined: Oct 2007 Posts: 535 Ohio	Quote: Quote: Quote: Running no stat, the water passes throw the radiator too fast, not disapating/exchanging heat transfer,.....so you could actualy run hotter,... I don't believe people still believe this old wives tale. I used to post and post about how this is not true. I finally gave up. The only way it could possibly be true is if without the stat it created cavitation sufficient to slow everything down. I don't think so. Kim ....no stat here...and no overheating ..or cooling problems either...car idles for 7-10 minutes it might get up to 190 or so,..waiting in staging lanes on a 90 degree day.still no issue..it's never been over 225 even after hot lapping on hot humid day...i run a typical elec. water pump drive and use a cooling fan module out of a honda accord... 5295151-16-140.JPG (21 downloads) -1967 Plymouth Satellite #3555 446 cid on E-85 best 1/4 et 10.577 @ 127.58 best 1/8 et 6.722 @ 100.68 best 60ft. 1.419

Re: Thermostat or no thermostat ? [Re: racerAL] #347935 06/15/09 09:41 PM 06/15/09 09:41 PM
Joined: Jan 2003 Posts: 32,929 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,929 Grand Prairie,Texas	Lot of difference between a race car and a street car.

Re: Thermostat or no thermostat ? [Re: stumpy] #347936 06/15/09 09:55 PM 06/15/09 09:55 PM
Joined: Oct 2007 Posts: 535 Ohio racerAL mopar
racerAL mopar Joined: Oct 2007 Posts: 535 Ohio	Quote: Lot of difference between a race car and a street car. .....your absolutely right, i was responding more to the wives tale about not running a stat and got caught up in that and didn't think about the original post..soooo my is that if he just ran the power tour withOUT a stat,and had no problems,i would say that a stat is not needed on a street car during the warmer months were heating up engine isn't so crucial... -1967 Plymouth Satellite #3555 446 cid on E-85 best 1/4 et 10.577 @ 127.58 best 1/8 et 6.722 @ 100.68 best 60ft. 1.419

Re: Thermostat or no thermostat ? [Re: racerAL] #347937 06/15/09 09:57 PM 06/15/09 09:57 PM
Joined: Jan 2003 Posts: 32,929 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,929 Grand Prairie,Texas	I don't like going without a stat because of the increased wear when an engine runs cold all the time.

Re: Thermostat or no thermostat ? [Re: stumpy] #347938 06/16/09 01:51 AM 06/16/09 01:51 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	I run a 160 stat in my 63 and it works good. Car runs about 170 while driving even on a hot day. In traffic at idle it will creep up to 190 if I sit for a good bit idleing. I drive it alot and I just use a stock water pump with a factory fan blade. No electric fan. Ron Last edited by 383man; 06/16/09 01:51 AM.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1