 Fixing my thermostat, How I did it |
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| MrKona |
 Apr 23 2008, 11:07 PM
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Senior Member  Group: Members Posts: 597 Joined: 25-July 05 From: Santa Rosa, CA Member No.: 4,469 Region Association: None  |
There was a recent thread about thermostats... it reminded me that the thermostat that came with the engine I'm building was broken, and I had to either buy a new, used one, or see if I could fix the one I have. I followed the informative article by Richard Atwell with good results. Ratwell link
My thermostat had sprung a leak somewhere which eliminated the negative pressure vacuum a functioning thermostat holds at room temperature. The thermostat is supposed to measure around 35mm in length at room temp, mine measured around 46mm, which is the normal expanded state length. I examined it closely and could not find any cracks around the perimeter, so I assumed there must be a break at a brazed surface. I was in luck, it was fixable! Just for kicks, I placed it in a hot water bath approximately 180 degree F, and there was no significant change in length, pre- to post-bath. Attached image(s)  
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| Steve Thacker |
Apr 25 2008, 11:47 AM
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UMMMPH Yea Baby Yea ! UMMMPH Group: Members Posts: 1,089 Joined: 8-January 03 From: Pickerington, Ohio Member No.: 113 Region Association: Upper MidWest |
Bryan,
Excellent post! You one smart coolie. (IMG:style_emoticons/default/aktion035.gif) |
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Posts in this topic
MrKona Fixing my thermostat Apr 23 2008, 11:07 PM
MrKona First step was to remove the top on the side with ... Apr 23 2008, 11:13 PM MrKona While I had the top off, I blew out any debris wit... Apr 23 2008, 11:17 PM MrKona Next step was to inject approximately 2ml of 99% I... Apr 23 2008, 11:23 PM ericread :popcorn: Apr 23 2008, 11:23 PM MrKona With the alcohol now injected through the small ho... Apr 23 2008, 11:28 PM MrKona And now for the water test.
At 140F, the thermost... Apr 23 2008, 11:32 PM MrKona Looks like it started opening a little early... At... Apr 23 2008, 11:33 PM MrKona ... and at 184F, it had opened up to around 55mm, ... Apr 23 2008, 11:36 PM ericread So what you are saying is that between "Rare ... Apr 23 2008, 11:51 PM
MrKona
So what you are saying is that between "Rare... Apr 24 2008, 01:15 AM purple Classic thread? Apr 24 2008, 10:23 AM jim_hoyland
Classic thread?
Definately ! Very nice writ... Apr 24 2008, 10:52 AM dbgriffith75 That's a really good suggestion- I didn't ... Apr 24 2008, 10:51 AM |
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