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Thermostat blanking sleeve

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Healey Nut

Healey Nut

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Simple question , whats the idea behind adding the sleeve ?
 
If asking about the sleeve on the thermostat originally installed from the factory, The sleeve blocks the hole that allows the coolant to recirculate without going through the radiator until the thermostat opens. Without the sleeved thermostat, some of the coolant will be recirculated without going through the radiator even though it should. If asking about a sleeve instead of a thermostat, it slows down the flow of coolant to the radiator to allow time for good heat transfer.
 
Ok so if you use the sleeve you are forcing more coolant through the rad therefore cooler running ?
 
Yes
 
Healey Nut - you live in a cooler area. If your cooling system temps are OK in the summer without the sleeve, then no problem.

If your car doesn't overheat, then no problem. The recirculation is a benefit in the spring and fall when you need a quicker warmup.

I live in a hotter area, therefore want the recirc port blanked off when the thermostat heats up.
 
steveg said:
Healey Nut - you live in a cooler area. If your cooling system temps are OK in the summer without the sleeve, then no problem.

If your car doesn't overheat, then no problem. The recirculation is a benefit in the spring and fall when you need a quicker warmup.

I live in a hotter area, therefore want the recirc port blanked off when the thermostat heats up.
Click to expand...
It gets pretty **** hot here in the summer so If I can get the engine temp down a bit and not have to drive anticipating red lights and tucking my right foot away to drive left footed to give my overheated right a break then I will try it .
Radiators have been recored with more passes but summer driving is just not fun and I find myself jumping into the Aston beacause of the AC ....
Yeah I know it sucks having to take the Aston Martin instead :eek::eek:
 
Hi All,

As Steve indicated, there have been many discussions on how to cool our Healeys during a HOT Summer and this has been an area of past discussion, as Steve has indicated, due to the high recent costs and scarcity of a Sleeved thermostat. Although I have a sleeved thermostat in my Healey to eliminate this issue, many in hotter climates have eliminated the thermostat altogether and just installed the sleeve to aid cooling. If you drive in a temperate or cooler climate, this may not be the best idea and combining the sleeve with a standard thermostat will take some modification (additional flange space) to allow both (thermostat/sleeve) to fit properly and tight under the hose bowl. Although this has not been a difficult task, its issues have been addressed in past threads and should be reviewed before attempting.

Keep Cool (not necessary to say with the coming COLD Vortex),
Ray(64BJ8P1)
 
Healey Nut
there are a lot of threads here on ideas to help cooling. i tried them all. in fact i have one folder of pictures just from my attempts to keep my car cool. while each try may have helped the cause a little, nothing really made me feel better.... until i put a new core in the radiator. i went from a three core flat fin style to a 4 core modern accordian fin style. that seemed to lower my car 10-15 degrees in cooling. it was night and day. So if you have not done the radiator, i would recommend that first.

as far as the floor and hot feet. you can get foil faced, self-stick duct insulation from Lowes for a pretty cheap price. it is like 12" wide and i forget how long. roll back your carpet and stick it down. even though i put fat mat down in my car, i went back and added a layer of the duct insulation on the driver side. i also put a layer on the underside of the tran tunnel, plus carpet padding on the top. the only place i have felt that gets hot to me now is at the flap for the tran dipstick. that is just because there was only a rubber plug there. i have since cut a piece of carpet padding and put it over that spot under the carpet.

it gets pretty hot here also.

if you don't want to pull the tunnel, you can probably just take off the carpet and stick a layer of duct insulation right on top. it does help.
 
Healey Nut said:
It gets pretty **** hot here in the summer
[
Yeah I know it sucks having to take the Aston Martin instead :eek::eek:
Click to expand...


Yep:
Healey Nut​

I was caught in traffic at the BC border and my Healey heated. I have driven in Tucson AZ in the summer and it did not heat.
Click to expand...
 
Drone Dog said:
Healey Nut
there are a lot of threads here on ideas to help cooling. i tried them all. in fact i have one folder of pictures just from my attempts to keep my car cool. while each try may have helped the cause a little, nothing really made me feel better.... until i put a new core in the radiator. i went from a three core flat fin style to a 4 core modern accordian fin style. that seemed to lower my car 10-15 degrees in cooling. it was night and day. So if you have not done the radiator, i would recommend that first.

as far as the floor and hot feet. you can get foil faced, self-stick duct insulation from Lowes for a pretty cheap price. it is like 12" wide and i forget how long. roll back your carpet and stick it down. even though i put fat mat down in my car, i went back and added a layer of the duct insulation on the driver side. i also put a layer on the underside of the tran tunnel, plus carpet padding on the top. the only place i have felt that gets hot to me now is at the flap for the tran dipstick. that is just because there was only a rubber plug there. i have since cut a piece of carpet padding and put it over that spot under the carpet.

it gets pretty hot here also.

if you don't want to pull the tunnel, you can probably just take off the carpet and stick a layer of duct insulation right on top. it does help.
Click to expand...

Radiators have been recored and Dynamat is all over the floors and tunnel .
I just ordered an original thermostat sleeve off flea bay . Will pull the thermostat and give that a whirl .........
once spring finally arrives .......ok back to my igloo .
 
RAC68 said:
Hi All,

As Steve indicated, there have been many discussions on how to cool our Healeys during a HOT Summer and this has been an area of past discussion, as Steve has indicated, due to the high recent costs and scarcity of a Sleeved thermostat. Although I have a sleeved thermostat in my Healey to eliminate this issue, many in hotter climates have eliminated the thermostat altogether and just installed the sleeve to aid cooling. If you drive in a temperate or cooler climate, this may not be the best idea and combining the sleeve with a standard thermostat will take some modification (additional flange space) to allow both (thermostat/sleeve) to fit properly and tight under the hose bowl. Although this has not been a difficult task, its issues have been addressed in past threads and should be reviewed before attempting.

Keep Cool (not necessary to say with the coming COLD Vortex),
Ray(64BJ8P1)
Click to expand...
MOSS sells a sleeved thermostat.
 
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