The Ford Barn

dean333 · 07-16-2021, 06:21 AM

I’ve read where the jiggle valve should be at the 12 o’clock position. Relative to what?? Looking from the front of the car, the driver’s side or passenger side??? Thanks

fordwife · 07-16-2021, 07:20 AM

Are you serious? or is this a joke?

Kurt in NJ · 07-16-2021, 08:01 AM

I think you are thinking of a horizontal installation, then it should be to 12 o'clock, or at top

aussie merc · 07-16-2021, 08:06 AM

place the bleedhole or jiggle hole at the highest point

51 MERC-CT · 07-16-2021, 08:09 AM

Might make a difference on an 8BA where it is mounted at 45 deg. to level but on a 59AB where it is almost level, I doubt it makes any difference.

dean333 · 07-16-2021, 08:33 AM

Sponsored Links (Register now to hide all advertisements)

48812EFE-59D5-4FD4-8B15-265DC730F20E.jpg. I googled where to install the thermostat on a 59AB and read a thread that said install with jiggle valve at 12 o’clock, never specified where in the hose to put it.

51 MERC-CT · 07-16-2021, 09:51 AM

Quote:

Originally Posted by dean333

Attachment 468381. I googled where to install the thermostat on a 59AB and read a thread that said install with jiggle valve at 12 o’clock, never specified where in the hose to put it.

The 59AB mount plate is located horizontally so there is not a clock position where 12 o'clock would be up.
Those/these instructions apply when the mount plate is vertical or close to vertical. (makes no difference on the 59AB)
If you want to get technical mount it facing to the front of the vehicle ( that side is slightly higher because of the angle the engine is installed at)

check this------

https://www.gatestechzone.com/en/new...tat-jiggle-pin

fordwife · 07-16-2021, 09:59 PM

My apologies for my previous post today. I had never heard a thermostat part refered to as a jiggle valve.

Tinker · 07-17-2021, 01:57 AM

I'd be more concerned if they actually opened at the water temp desired. Easy to do with a a pot of water on the stove and a cooking thermometer. Jiggle me crazy.

Tinker · 07-17-2021, 02:10 AM

Quote:

Originally Posted by 51 MERC-CT

The 59AB mount plate is located horizontally so there is not a clock position where 12 o'clock would be up.
Those/these instructions apply when the mount plate is vertical or close to vertical. (makes no difference on the 59AB)
If you want to get technical mount it facing to the front of the vehicle ( that side is slightly higher because of the angle the engine is installed at)

check this------

https://www.gatestechzone.com/en/new...tat-jiggle-pin

What if I have a 4" drop axle and a heavy rake. Lot of guys drill a couple holes in temps too. I would not worry about it. Don't overthink it.

Rudolph · 07-17-2021, 03:25 AM

I cut the jiggle valves off,

flatford8 · 07-17-2021, 05:32 AM

Quote:

Originally Posted by dean333

Attachment 468381. I googled where to install the thermostat on a 59AB and read a thread that said install with jiggle valve at 12 o’clock, never specified where in the hose to put it.

If the thermostat is up by the radiator inlet, then makes sense to me to put the jiggle valve at 12 o’clock. That’s where the air would be. If it’s mounted on top of the head, with whatever way you hold it in place, I don’t think it would matter how the valve was clocked…….Mark

Crankster · 07-17-2021, 05:55 AM

If it were a good idea to drill holes in thermostats wouldn't they be supplied that way? Never made any sense to me.

drolston · 07-17-2021, 12:40 PM

Quote:

Originally Posted by Crankster

If it were a good idea to drill holes in thermostats wouldn't they be supplied that way? Never made any sense to me.

For the thermostat to open, the water temperature at the bi-metal part must reach the rated temperature. With the thermostats way up in the neck of a 59A/B, it takes a while for convection to get the temperature there up to that of water in the head below. In starting my '41 cold, the temperature gauge would always go to 200, and then drop down to 170 when the stats opened. That is not really a problem for the engine, but it makes me anxious every time I see that gauge go too high. So I drilled two 5/32 holes in each thermostat, and now the temp just comes up to 170 and stays there. Maybe the little bit of water bypass during warm up causes the warm up time to take a minute longer, but that is fine with me.

Crankster · 07-17-2021, 02:45 PM

Yeah, I've heard people say they always drill holes in thermostats, sometimes lots of them. The "jiggle valve" is intended to reduce or eliminate air pockets after a coolant change or thermostat replacement, is my understanding.

It just seems to me the thermostat is designed to open & flow at carefully engineered operating points and drilling holes in it would bugger this. If a 170° seems to spike too high at startup, why not then simply run a 160°? (minus the drill holes) Not arguing I'm right and you're wrong, but it doesn't make sense to me to permanently upset the calibration of a thermostat.

07-16-2021, 06:21 AM	#1
dean333 Senior Member Join Date: Jun 2012 Location: Shorewood Illinois Posts: 861	59AB Thermostat clocking I’ve read where the jiggle valve should be at the 12 o’clock position. Relative to what?? Looking from the front of the car, the driver’s side or passenger side??? Thanks __________________ Tim Carlig

07-16-2021, 07:20 AM	#2
fordwife Senior Member Join Date: Dec 2015 Posts: 287	Re: 59AB Thermostat clocking Are you serious? or is this a joke?

07-16-2021, 08:01 AM	#3
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,158	Re: 59AB Thermostat clocking I think you are thinking of a horizontal installation, then it should be to 12 o'clock, or at top

07-16-2021, 08:06 AM	#4
aussie merc Senior Member Join Date: Sep 2016 Location: sydney australia Posts: 1,033	Re: 59AB Thermostat clocking place the bleedhole or jiggle hole at the highest point

07-16-2021, 08:09 AM	#5
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: 59AB Thermostat clocking Might make a difference on an 8BA where it is mounted at 45 deg. to level but on a 59AB where it is almost level, I doubt it makes any difference. __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES

07-16-2021, 08:33 AM	#6
dean333 Senior Member Join Date: Jun 2012 Location: Shorewood Illinois Posts: 861	Re: 59AB Thermostat clocking Sponsored Links (Register now to hide all advertisements) 48812EFE-59D5-4FD4-8B15-265DC730F20E.jpg. I googled where to install the thermostat on a 59AB and read a thread that said install with jiggle valve at 12 o’clock, never specified where in the hose to put it. __________________ Tim Carlig

07-16-2021, 09:59 PM	#8
fordwife Senior Member Join Date: Dec 2015 Posts: 287	Re: 59AB Thermostat clocking My apologies for my previous post today. I had never heard a thermostat part refered to as a jiggle valve.

07-17-2021, 01:57 AM	#9
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,053	Re: 59AB Thermostat clocking I'd be more concerned if they actually opened at the water temp desired. Easy to do with a a pot of water on the stove and a cooking thermometer. Jiggle me crazy.

07-17-2021, 03:25 AM	#11
Rudolph Senior Member Join Date: Aug 2014 Location: North island Newzealand. Posts: 272	Re: 59AB Thermostat clocking I cut the jiggle valves off,

07-17-2021, 05:55 AM	#13
Crankster Senior Member Join Date: Oct 2017 Posts: 563	Re: 59AB Thermostat clocking If it were a good idea to drill holes in thermostats wouldn't they be supplied that way? Never made any sense to me.

07-17-2021, 02:45 PM	#15
Crankster Senior Member Join Date: Oct 2017 Posts: 563	Re: 59AB Thermostat clocking Yeah, I've heard people say they always drill holes in thermostats, sometimes lots of them. The "jiggle valve" is intended to reduce or eliminate air pockets after a coolant change or thermostat replacement, is my understanding. It just seems to me the thermostat is designed to open & flow at carefully engineered operating points and drilling holes in it would bugger this. If a 170° seems to spike too high at startup, why not then simply run a 160°? (minus the drill holes) Not arguing I'm right and you're wrong, but it doesn't make sense to me to permanently upset the calibration of a thermostat.