The CJ3A Page Forum - Temperature Issue

The CJ3A Page

Welcome, Guest. Please Login

The CJ3A page at Facebook

News:

The CJ3A Page Forum › Willys CJ-3A Technical Knowledge Base › Tech Talk › Temperature Issue

‹ Previous Topic | Next Topic ›

Page Index Toggle

Pages: [1] 2 3

Print

Very Hot Topic (More than 25 Replies)

Temperature Issue (Read 10689 times)

athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Temperature Issue 01/08/12 at 21:24:14	Print Post
	Through blood, sweat, frustrations and successes, I finally drove my Willys today. Here it is. Here's my problem. I can't get the temp above about 130 degrees. It's pretty cold here in Colorado today, but shouldn't it still warm up to 160 to 180 degrees? I have a brand new gauge, radiator was flushed clean, brand new 50-50 fluid, the Harrison heater warms up nicely. Tim

	2-1949 CJ3A 1-1946 CJ2A
	IP Logged

Carls_jeep Flatfender Master Owner Member 2012 Offline ... Posts: 1746 Location: Taylorsville Ky Joined: 10/19/10 Gender:	Re: Temperature Issue Reply #1 - 01/08/12 at 21:59:07	Print Post
	Do you have an infrared temp gun? If so shoot it at the head to see what the temp is. It's not unusual for the temp gauges to be wrong.


	IP Logged

Ryan_M Flatfender Master Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline Posts: 1695 Location: Glenburn, ME Joined: 12/29/11 Gender:	Re: Temperature Issue Reply #2 - 01/08/12 at 22:07:11	Print Post
	It looks amazing...even at 130 degrees. Nice work!

	Current: '49 CJ3A '51 CJ3A '42 Willys MB-T '47 Bantam T3-C Previous: '46 2A '51 3A '52 3A '52 M38 '54 3B East Coast Willys Association
	WWW Facebook IP Logged

aboyandhisdog Flatfender Master Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline Posts: 751 Location: Fort Collins, Colorado Joined: 12/14/10	Re: Temperature Issue Reply #3 - 01/08/12 at 23:10:18	Print Post
	Lookin' good, Tim. Can't say why she's running cold but, yes, it should be running between 160-190 even in the winter. I drove mine yesterday and it heated right up even though it is cold out. I've found it will run about 10 degrees lower in the winter than summer, but not 130 in winter.

	Tom
	IP Logged

Comanche_County 3A Guru Offline Posts: 252 Joined: 09/11/11	Re: Temperature Issue Reply #4 - 01/09/12 at 00:33:06	Print Post
	Very nice work!

	Georgia President of the International Flat Fender Club
	IP Logged

athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Re: Temperature Issue Reply #5 - 01/09/12 at 03:08:49	Print Post
	Hey guys. Thanks for the comments. I don't have an infared gun. I may be able to borrow one from a guy at work. Is is worth changing the thermostat? Could it be stuck open? I did get the temp gauge from Walcks. I may have gotten a dude, I guess. The other heat related thing I noticed today is the heat riser, raises, but did not open fully. Only opened about half way. The flapper moves freely open and closed. I only drove it 4-5 miles on a pretty cool day. Warn out spring? The Jeep ran well. A little vibration at 30 MPH. U-joint? Any and all thoughts are appreciated. I drove it again tonight. I am so excited to have it back on the road again after almost 2 years. I'm not even freaking out about how dirty I got it while driving on wet slushy roads. Okay, I freaked out a little. Tim

	2-1949 CJ3A 1-1946 CJ2A
	IP Logged

Carls_jeep Flatfender Master Owner Member 2012 Offline ... Posts: 1746 Location: Taylorsville Ky Joined: 10/19/10 Gender:	Re: Temperature Issue Reply #6 - 01/09/12 at 17:03:22	Print Post
	Don't fret, the dirt will wash off and Jeeps like to get dirty. You can try replacing the thermostat but I would check the temp at the head by the thermo housing first. Is the thermostat new?


	IP Logged

athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Re: Temperature Issue Reply #7 - 01/09/12 at 18:56:46	Print Post
	Carl, The thermostat is not new. It seemed to warm up fine before the tear down. (ain't broke don't fix it) Only thing that changed was a complete flush of the engine block and radiator and a new temp gauge. There were some chunks of garbage that came out of the engine block drain. Could some of that get stuck in the thermostat? Any thoughts on the heat riser not raising all the way? Tim
	« Last Edit: 01/09/12 at 18:57:26 by athawk11 »
	2-1949 CJ3A 1-1946 CJ2A
	IP Logged

Bob W Flatfender Master Owner Member 2012 2016 Sponsor Member Offline Posts: 2159 Location: Monticello, NY Joined: 10/19/10 Gender:	Re: Temperature Issue Reply #8 - 01/09/12 at 19:41:22	Print Post
	athawk11 wrote on 01/09/12 at 18:56:46: Any thoughts on the heat riser not raising all the way? Is it the original bimetalic spring? Many of the aftermarket springs were not made properly and do not work.

	Bob W
	WWW IP Logged

athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Re: Temperature Issue Reply #9 - 01/09/12 at 21:05:41	Print Post
	Bob, The Willys came to me with no heat riser and the flapper seized. The only thing that was present was the spring and the disc. (Probably because they were rusted solid to the flapper pivot arm.) . I bought the heat riser complete from a guy on ebay that claimed it was a take off. Its was very rusty and old looking. Came with the weight, disc, spring, screw, nut and the small odd shaped washer that locks the weight to the slot in the flapper shaft. Once I freed up the flapper, I installed the riser system and applied heat. (short blast of propane torch) The spring tightened up and raised the riser. Figured I was good to go. I do have my old spring. (Someone here convinced me to never throw away old Willys parts.) I could try the old one and see if it works better.
	« Last Edit: 01/09/12 at 21:06:13 by athawk11 »
	2-1949 CJ3A 1-1946 CJ2A
	IP Logged

athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Re: Temperature Issue Reply #10 - 01/11/12 at 01:25:23	Print Post
	As Carl suggested, I borrowed an infared gun from a co-worker. I took it for a spin and got it nice and warm. I left the engine running and shot the heat gun in numorous spots on the head. Toward the fan, 163 degrees. Toward the rear of the head 175 degrees. At the thermostat connection, 145 degrees. This is what my connection looks like. I have a Harrison heater. The Temp gauge read just over 140 degrees and I think it's fine. The temperature was the same right where the gauge thermostat is installed in the T-pipe. I believe the gauge would read 170-175 if the temp gauge thermostat was installed in the head and not in the pipe that feeds the Harrison heater. Here is another glamor shot. Just for fun

	2-1949 CJ3A 1-1946 CJ2A
	IP Logged

Matto 3A Guru Owner Member 2012 Offline 1949 CJ3A SN#10511 Body #10517 Posts: 361 Location: South East CT Joined: 10/22/10 Gender:	Re: Temperature Issue Reply #11 - 01/11/12 at 03:21:08	Print Post
	Tim, The way your Temp. sending unit is installed may have something to do with your low readings. Here is a pic of my 3A with a Harrison heater. You'll notice the heater is fed from the top of the water pump and returns to the back of the cylinder head. The sending unit is mounted directly into the block. Matt

	1949 CJ3A project,1954 CJ3B weekend driver,1979 CJ5 plow Jeep,2012 JK Rubicon DD and weekend trail rig,2011 Ford F150 for dragging cool stuff home
	IP Logged

athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Re: Temperature Issue Reply #12 - 01/11/12 at 04:11:28	Print Post
	Yep, Matto. I'm thinking you're dead on. This is how the heater was installed when the Willys came to me. I had never messed with old Jeeps before and assumed everything was right. I have seen many photos of heater hoses installed like yours, and only one other done like mine. I considered changing it because the old head connection was sticking so far out that it pushed up against the oil bath filter that I added back to the Jeep. I decided not to re-invent the wheel and just installed the brass elbow and routed the hose down and under the air cleaner. Again, the head does get to 175 degrees. I think I'm okay there. I'll just have to know that 145 at the gauge means 175 at the head. Tim

	2-1949 CJ3A 1-1946 CJ2A
	IP Logged

johnnybravo 3A Lover Offline Still Plays With Jeeps Posts: 96 Location: Booger Hole, WVa Joined: 02/14/11 Gender:	Re: Temperature Issue Reply #13 - 01/12/12 at 04:14:15	Print Post
	WOW...THANKS FOR THE EXTRA GLAMOR SHOT. MAY WILL MAKE THREE YEARS WORKING ON MY 3A. MIND POSTING A "BOOTY" PHOTO?

	USAR Vet, Retired. MB, GPW, CJ2A, CJ3A, CJ3B, '47 WO 4x4 Trk, '47 WO 4X2 Wagon
	IP Logged

ventport Project Jeep Offline Still Plays With Jeeps Posts: 40 Location: Wisconsin Joined: 10/28/10 Gender:	Re: Temperature Issue Reply #14 - 01/12/12 at 15:21:50	Print Post
	I would change it back to the factory setup so the gauge reads correctly. That way you will know for sure if it ever over heats by the gauge that you have a REAL problem. My 3A is set up per factory with the Harrison heater and both the heater and the gauge work as they should.


	IP Logged

Page Index Toggle

Pages: [1] 2 3

Print

‹ Previous Topic | Next Topic ›

Bookmarks:

Google

Google+

Yahoo

« Board Index ‹ Board Top

Top

The CJ3A Page Forum » Powered by YaBB 2.6.11!
YaBB Forum Software © 2000-2026. All Rights Reserved.

Valid XHTML

Valid CSS

Powered by Perl

Source Forge