292 V8 Temp Sending Unit Bushing
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Junior User
Joined: Oct 2004
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From: Billings, Montana
292 V8 Temp Sending Unit Bushing
The heads on the 1960 292 V8 did they all except the pressed in bushing for the temperature sending unit at one time. Why I ask is the head where my sending unit goes has a drilled hole with pipe threads in it. The problem I having is when using a threaded bushing in combination with the temp unit the bottom of the unit is not in the flow of the coolant fluid. This gives me a running hot indication on the stock temp guage I know it is not running hot because I have put in a mechanical temp gauge to check temp which runs at 185F when truck is warmed up. So I feel like I am reading head temperature all the time.
Any thoughts? I need to check the other head on the truck to see what is in the temp hole.
Regards,
Monte
Any thoughts? I need to check the other head on the truck to see what is in the temp hole.
Regards,
Monte
Lead Driver
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From: Colonsay Sk. Canada
Can't help ya but I got the same problem on my 57. and my motor doesn't have the greatest rad and is bored out .0606 so I would like to know the temp.
I'm pullin for ya, We're all in this together.
I'm pullin for ya, We're all in this together.
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Junior User
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From: Billings, Montana
I did check the other head and it does have a frost plug in the hole so.........I take it that somebody tapped the hole and used a threaded bushing in conjunction with the sending unit. I guess I will go to plan B...when I figure that out.
md
md
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From: Redondo Beach, CA
Monte,
Are you sure the hole is tapped into the head? There are two different size sending units that fit different bushings. Maybe someone 'adapted' a smaller sending unit to your larger bushing.
Also if the head with the expansion plug (frost plug) has enough room you may be able to install a sending unit on that side.
I am actually running a sending unit in both heads, one for the temperature gauge (Stewart Warner mechanical) and one to actuate my electric fan when it reaches ~200 deg F (I think, can't remember setting at the moment).
I can give you more info if you need it.
Y-Blockhead
Are you sure the hole is tapped into the head? There are two different size sending units that fit different bushings. Maybe someone 'adapted' a smaller sending unit to your larger bushing.
Also if the head with the expansion plug (frost plug) has enough room you may be able to install a sending unit on that side.
I am actually running a sending unit in both heads, one for the temperature gauge (Stewart Warner mechanical) and one to actuate my electric fan when it reaches ~200 deg F (I think, can't remember setting at the moment).
I can give you more info if you need it.
Y-Blockhead
Last edited by Y-Blockhead; Mar 23, 2007 at 07:45 PM.
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Junior User
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From: Billings, Montana
One head has the frost plug and the other a hole with 3/8" pipe thread in the cast iron head. If I could just get the sending unit deeper into the coolant stream I would have it made. Or if I could find a sending unit that is 3/8" pipe thread and the correct ohm's that would give the correct reading would be the way to go. I have been to NAPA and they could not cross reference a sending unit that would match the ohm's that the stock unit has.
Any idea's?
Monte
Any idea's?
Monte
Elder User
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From: Redondo Beach, CA
Monte,
Actually the stock bushings were steel, I'm going to have to wait until the morning to see what size threads mine has. I know I have two different sizes... but since I am using a Stewart Warner gauge it more than likely it is not going to work for you for your stack temp gauge.
Actually the stock bushings were steel, I'm going to have to wait until the morning to see what size threads mine has. I know I have two different sizes... but since I am using a Stewart Warner gauge it more than likely it is not going to work for you for your stack temp gauge.
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Older model electric temp gauges & sending units aren't known for their accuracy even when parts are new. SW was the crap, VDO and Autometer the best.
The temp sender has to be correct for the brand & model of the gauge.
Old senders are suspect, also make sure you have a really good ground from batt to block, frame, and body.
The temp sender has to be correct for the brand & model of the gauge.
Old senders are suspect, also make sure you have a really good ground from batt to block, frame, and body.
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Junior User
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From: Billings, Montana
Thanks for the reply.
New sending unit from Dennis Carpenter but using stock 48 year old guage. I have checked using an ohm-meter between battery/block/cab/frame and have continuity between all. I have a new press in bushing coming in the mail and maybe I can cut pipe threads on it. I believe if I could just get the stock temp probe down into the coolant stream I would have it made in the shade.
Monte
New sending unit from Dennis Carpenter but using stock 48 year old guage. I have checked using an ohm-meter between battery/block/cab/frame and have continuity between all. I have a new press in bushing coming in the mail and maybe I can cut pipe threads on it. I believe if I could just get the stock temp probe down into the coolant stream I would have it made in the shade.
Monte
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From: Redondo Beach, CA
Jerk_Fitting,
"SW was the crap". Not sure what that means. Stewart Warner was around a long time before Autometer came along and for a vintage look of the gauges and accuracy thats's what I still perfer. Just wondering what your basing that on??
But to each his own.
The SW unit I am using is a mechanical gauge tho and even then you have to get the blub into the coolant stream as Monte stated...
But Monte I'm still having a hard time imagining that you don't have a bushing in your head. I just measured one of my spare heads (a ECZ-G) and the hole is ~ 7/8", a 3/8 pipe thread tape falls thru it... Hope your new parts work for you, Keep us posted.
Y-Blockhead
"SW was the crap". Not sure what that means. Stewart Warner was around a long time before Autometer came along and for a vintage look of the gauges and accuracy thats's what I still perfer. Just wondering what your basing that on??
But to each his own.
The SW unit I am using is a mechanical gauge tho and even then you have to get the blub into the coolant stream as Monte stated...
But Monte I'm still having a hard time imagining that you don't have a bushing in your head. I just measured one of my spare heads (a ECZ-G) and the hole is ~ 7/8", a 3/8 pipe thread tape falls thru it... Hope your new parts work for you, Keep us posted.
Y-Blockhead
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From: Simi Valley, CA
Y block temp senders & adapters 1957/64.
Originally Posted by Y-Blockhead
Monte,
Actually the stock bushings were steel, I'm going to have to wait until the morning to see what size threads mine has. I know I have two different sizes... but since I am using a Stewart Warner gauge it more than likely it is not going to work for you for your stack temp gauge.
Actually the stock bushings were steel, I'm going to have to wait until the morning to see what size threads mine has. I know I have two different sizes... but since I am using a Stewart Warner gauge it more than likely it is not going to work for you for your stack temp gauge.
B7A-10884-A .. Temperature Sender (Motorcraft SW-343) 1/4"-18 pipe thread. Used 1957/62
C1AZ-10884-A .. Temp Sender (Motorcraft SW-707) 1/4"-18 pipe thread. Used 1963/64.
-------------------------------------------------------------------------
*C3TZ-10911-A .. Adapter, Temp Sender~Press in type (no Motorcraft #) 29/32" O.D. x 1/2"-long with 1/8" -27 pipe thread. Use with senders having 1/8" -27 male end. Used 1963/64
C3TZ-10884-A .. Temp Sender (Motorcraft SW-391) 1/8"-27 pipe thread. Used 1963/64
*Besides these two press in types, there's a screw in type used 1963/64.
Last edited by NumberDummy; Mar 30, 2007 at 09:52 PM.
