Thermostate Bellows, Hozs it really work |
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Thermostate Bellows, Hozs it really work |
Joe Ricard |
Nov 29 2005, 06:17 AM
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#1
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Up until it started getting cold the damn thing worked great. Engine cold flaps shut and would open fully as the engine reached close to 300. or so.
Now that is it cold here 50 this morning I got the heads up to 350 and pulled over to see whats up. Flaps only half open!!! wierd. I have all the tin including the warm air guides fully functional heater everything. Confident the engine was warm I lossened the cable pinch bolt flaps sprang open and I drove to work. 1 eye on the road 1 eye on the CHT. Gosh these cars are a PITA sometimes. I suppose there is some special german one of a kind tool to set the point of opening in relation to temperature. I don't got one! |
type47 |
Nov 29 2005, 07:05 AM
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#2
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
no special tool that i've ever seen. adjustment is just pull cable tight with one hand, hold flaps open with the other hand, tighten nut with cable under it with the third hand. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
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Mark Henry |
Nov 29 2005, 08:03 AM
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#3
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
It's a combo of bi-metal material and most likely an inert gas. Heat makes the bellows expand.
Most times they will fail in the wide open position, but I've seen them fail half open. Yours has failed. |
Joe Ricard |
Nov 29 2005, 09:04 AM
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#4
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Crap! I think I got another one somewhere in by goodie box. I suppose I can pull it clean it up and test it in hot water. Hmm So how does the thermostate work with a 914 DTM? Not that I need one just curious. |
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davep |
Nov 29 2005, 09:19 AM
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#5
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914 Historian Group: Benefactors Posts: 5,143 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada |
While you are 'testing' it in hot water, consider cleaning it. Get it up to a high enough temperature to expand the bellows nicely so you can clean in between the pleats. Often, dirt will accumulate in there and prevent it from contracting completely. Besides, the dirt will often abrade the copper and cause a leak, then the unit is toast. A little Brasso won't hurt either.
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Cap'n Krusty |
Nov 29 2005, 09:34 AM
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#6
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Actually, you pull the cable taut and close the flaps fully, locking the pinch clamp in that position. As the engine and the thermostat warm up, the flaps open. The Cap'n |
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Joe Ricard |
Nov 29 2005, 09:49 AM
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#7
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Yea No shit really? Just never seen one do what this one is doing. I know how to set it. Just figured I would throw it out there and see if it rings a bell with anyone. As Mark pointed out these things can fail partially open. Didn' know that. Thanks Ya'll
My engine is fairly leak free. however the last time I raced it was raining like a bitch. then rained all the way from Tampa to Pascagoula. So I suspect it could be dirty. even with all the tin in place. |
Mark Henry |
Nov 29 2005, 09:55 AM
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#8
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Sometimes just the flap can catch on something...make sure everything is working freely.
Also don't over heat the bellows, if it expands too far that will fuck it. If it's bad when you put a bit of heat to it nothing (or almost nothing) will happen. |
tat2dphreak |
Nov 29 2005, 09:59 AM
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#9
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
good article in the classics about how the whole system works, too...
just my .02 |
JoeSharp |
Nov 29 2005, 06:43 PM
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#10
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In Irvine, Ca. May 15-18 Group: Members Posts: 3,947 Joined: 9-July 03 From: DeLand, Florida Member No.: 898 Region Association: South East States |
I took a belows up 300 Deg in the oven and got nothing then I chilled it the freezer and it srunk about 3 mm at 30 deg. It dosn't work untill it gets cold. Probably useless here.
:PERMAGRIN: Joe |
bottomend |
Nov 30 2005, 01:03 AM
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#11
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Member Group: Members Posts: 180 Joined: 27-August 05 From: LA,Ca Member No.: 4,683 |
If you drop it into hot water or the oven, MAKE SURE you leave it in it's bracket. If not ( ask me how I know...), it'll expand to about 7 inches long!
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bd1308 |
Nov 30 2005, 01:11 AM
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#12
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
(IMG:http://www.914world.com/bbs2/html/emoticons/shocked[1].gif) |
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Mark Henry |
Nov 30 2005, 08:43 AM
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#13
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
It's fuched
It's fuched |
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Joe Ricard |
Nov 30 2005, 09:17 AM
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#14
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
SO if your woman queries "that all you got"? Just take it out the bracket and warm it up.
OK got it. (IMG:http://www.914world.com/bbs2/html/emoticons/w00t.gif) |
maf914 |
Nov 30 2005, 12:29 PM
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#15
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None |
Are you saying she calls it a bellows? Never heard that before. (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) |
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