Home » Public Forums » GMCnet » [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
| [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem [message #327882 is a reply to message #327792] |
Sat, 06 January 2018 11:28   |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma:
|
Senior Member |
|
|
Johnny. The outside fins can have separation from the outside of the coolant tubes that go horizontally across the radiator. This is simple to do by simply looking.. These outside fins also need to be inspected with the use of a flashlight at night. Have someone shine a flashlight from the back of the radiator. Then have someone else at the front to look for areas that are plugged up with bugs. I have a bug screen in front of my radiator that I got from Jim K at Applied GMC. Compressed air, or water can be used to clean the bugs out. Our real problem is that we can't look inside our radiators. I've tried mirrors. Didn't work. This camera inspection will see if there's corrosion on the inside that isn't going to be an obstruction to coolant flow. The coolant needs to be removed for a clearer view inside. Plus I don't want to find out the hard way if my camera is truly water proof. Bob Dunahugh Member GMCMI and Greater Midwest Classics
________________________________
From: Bob Dunahugh
Sent: Thursday, January 4, 2018 9:13 PM
To: gmclist@list.gmcnet.org
Subject: RE: The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
Johnny. The problem s there are that the radiator should be full if the overflow tank is at it's correct level. Next. The corrosion at the top could be drastically different farther down. The radiators have drains at the bottom that is simple to open. Good thought though. Bob Dunahugh
________________________________
From: Bob Dunahugh
Sent: Tuesday, January 2, 2018 5:08 PM
To: gmclist@list.gmcnet.org
Subject: RE: The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
Mike K. Thanks. I think this is more of a problem then is generally thought. I pull higher GVW's more then most. And never had any add on items installed on our 403 GMC. Radiator inspections on attendees GMC's. Might make for a good tech session at the GMCMI rally in Tucson. Line them up, and start checking with my inspection camera. Drain pan, funnel, and the camera. At a cost of FREE. Good idea, or not. Any input out there? Bob Dunahugh
Our first 78 Royale came with a Digi panel. I knew my engine temps under all conditions. Then the fire. Bought another 78 Royale. But the Digi panel wasn't being made at that time. Both GMC stock temp gauges read the same. But it didn't take long before I had a feeling that this second Royale was running hotter. No boil overs. Just didn't feel right. So on our next trip. I raise the engine cover several times to check the engine temp sender with an inferred temp reader. Found that this Royale was generally operating about 10 degrees hotter with the stock gauge reading in the normal range as compared to our first GMC. Jim at Applied GMC had started producing the Digi panel. And had them at the GMCMI rally that we were going too. Installed the Digi panel at the rally. On the way home the panel also confirmed what I thought. So why the running hotter? Checked the thermostat. It was a good operating 180. But I changed to a proper 195. Fan clutch? Maybe. Well Jim K at Applied started selling a fan clutch that is controlled by engine block sensors. I liked the idea that this system is more proactive in controlling engine heat buildup. Plus I can turn the clutch on for the fan by a dash mounted switch when I want. So I bought that fan clutch at the GMCMI rally. I had recently put on an aluminum 307 Olds intake manifold. So I knew the engine was clean inside. Did the engine have a car water pump? Don't know. But even if there's a car pump. That's not the real big problem. Next I drained the radiator. Put my inspection camera in the radiator. Radiator's my problem. Looked heavily corroded at the crossover tubes. Going to put the radiator from the burned GMC in soon. Probably check/change water pump anyway while I'm doing other work in that area. Installing more gauges to look at isn't the best idea in my opinion. One. I want to be looking at the road for safe driving. Two. The Digi panel has gages. But it's audible alarm is your best engine/trans protection.
Bob Dunahugh 78 Royale
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
 |
|
[GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
By: thesmith on Tue, 02 January 2018 20:15 |
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
By: Keith V on Wed, 03 January 2018 09:45 |
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
By: USAussie on Wed, 03 January 2018 13:44 |
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
[GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
|
|
|
Re: [GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
|
|
|
Re: [GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
|
|
|
Re: [GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
By: bdub on Wed, 03 January 2018 21:38 |
|
|
Re: [GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
|
|
|
Re: [GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
|
|
|
Re: [GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
By: USAussie on Thu, 04 January 2018 05:28 |
|
|
Re: [GMCnet] Free Radiatior internal camera inspection, with radiator/cap pressure test.
|
|
|
Re: [GMCnet] Clubs Posting To GMC list
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
[GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
|
|
Re: [GMCnet] The stock temp gauge doesn't really tell you your operating temps. Why that's a problem
|
Goto Forum:
Current Time: Sat May 25 04:25:21 CDT 2024
Total time taken to generate the page: 4.17889 seconds
|
GMCforum
Search
Help
Register
Login
Home
