Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 07-10-2010, 11:37 AM   #1
28 Special Coupe
Member
 
28 Special Coupe's Avatar
 
Join Date: Jun 2010
Location: Broken Arrow, Oklahoma
Posts: 63
Default How much red do you see in your moto meter?

Hey guys, when normally driving from 35 to 45mph on a hot day, say above 85 degrees, how high does the red indicator in your moto meter rise? I'm trying to determine what's normal, especially for 28/29 cars that have the smaller radiator. I noticed that halfway up in the open circle there's writing that says "Summer Average". Is it normal for the temperature to rise that high? Thanks for your help.
28 Special Coupe is offline   Reply With Quote
Old 07-10-2010, 11:54 AM   #2
fordfixer
Senior Member
 
Join Date: May 2010
Location: Crete, Illinois
Posts: 266
Default Re: How much red do you see in your moto meter?

You have to just drive it and find out what is normall for your car. They will all read different. I have seen some, that don't hardly show anything and others that rise half way or more.
fordfixer is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 07-10-2010, 12:05 PM   #3
Mitch//pa
BANNED
 
Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
Default Re: How much red do you see in your moto meter?

i never see any red in mine even after i put a 160 stat still nothing. during the 4th of july parade i saw a spec of red but went quickly away.
Mitch//pa is offline   Reply With Quote
Old 07-10-2010, 12:25 PM   #4
Barry in St.Paul
Senior Member
 
Barry in St.Paul's Avatar
 
Join Date: May 2010
Posts: 105
Default Re: How much red do you see in your moto meter?

My 30 coupe is similar to Mitch's; I see a little red if I am sitting idling, but drops back down to just below the visible area when I'm driving. When I stick a thermocouple in the radiator, I get about 185-190F, so no problem, just isn't calibrated to rise to the "Summer Average" line I guess.... I wonder if the original motometers did so? Mine is Vinteque reproduction.
Barry in St.Paul is offline   Reply With Quote
Old 07-10-2010, 12:54 PM   #5
Kurt in NJ
Senior Member
 
Kurt in NJ's Avatar
 
Join Date: May 2010
Location: on the Littlefield
Posts: 5,249
Default Re: How much red do you see in your moto meter?

I have a 40 year old repro motometer, top of the circle is steam, long slow parade in 90+ it will get close to bottom of circle, 60 mph on 90 degree day --1/2 to 3/4 to circle, when it is cold no more than 1/4 to circle ----I do have a 160 thermostat so the motometer only reads radiator temp.
Kurt in NJ is offline   Reply With Quote
Old 07-10-2010, 01:08 PM   #6
Bob Johnson
Senior Member
 
Bob Johnson's Avatar
 
Join Date: May 2010
Location: California
Posts: 841
Default I do not see any red just the temperature

Sponsored Links (Register now to hide all advertisements)
I converted my Motometer to digital and now it shows the actual temperature of the coolant.

Bob
Attached Images
File Type: jpg motometer005.jpg (45.3 KB, 44 views)
Bob Johnson is offline   Reply With Quote
Old 07-10-2010, 01:15 PM   #7
Bob/AZ
Senior Member
 
Bob/AZ's Avatar
 
Join Date: May 2010
Location: Greer, Arizona
Posts: 104
Default Re: How much red do you see in your moto meter?

I put a good quality temp guage in my car because I was never seeing red on the Motometer, even when it boiled over on a long climb. I live at 8500msl so water boils at a lower temp here. Don't know if no red is a function of the elevation or a defective Motometer but the new meter sure makes me feel better.
Bob/AZ is offline   Reply With Quote
Old 07-10-2010, 01:16 PM   #8
Bruce Adams
Senior Member
 
Bruce Adams's Avatar
 
Join Date: May 2010
Location: Northport, NY
Posts: 1,595
Default Re: How much red do you see in your moto meter?

NONE, EVER, in my Thermo-Quail in ten years, even while BOILING OVER.

I think maybe its not overly accurate.
Bruce Adams is offline   Reply With Quote
Old 07-10-2010, 01:29 PM   #9
28 Special Coupe
Member
 
28 Special Coupe's Avatar
 
Join Date: Jun 2010
Location: Broken Arrow, Oklahoma
Posts: 63
Default Re: How much red do you see in your moto meter?

Thanks for your responses. So far most of my driving has been during the previous fall and winter months and I didn't see any red at all. Now that it's much warmer I'm seeing it climb into the circle and I'm having some overheating problems. Unfortunately, I've made few changes, including replacing my 4 blade fan with an aluminum 2 blade and I put in a 160 degree thermostat so I'm not sure what the culprit is. At the moment I'm running straight water and it's boiling over. I'm getting ready to replace the water with 50/50 antifreeze to at least raise the boiling point and see what effect that has. I'm guessing that if the water is boiling then the temperature is at least 212 degrees, which is probably too high, though.
28 Special Coupe is offline   Reply With Quote
Old 07-10-2010, 01:49 PM   #10
JoeWay
Senior Member
 
JoeWay's Avatar
 
Join Date: May 2010
Location: Quincy CA
Posts: 749
Default Re: I do not see any red just the temperature

Quote:
Originally Posted by Bob Johnson View Post
I converted my Motometer to digital and now it shows the actual temperature of the coolant.

Bob
OK, Bob, time for a how-to and where-to-get page on your website.

I like it!!
__________________
1929 Tudor
since 1962
Feather River A's
JoeWay is offline   Reply With Quote
Old 07-10-2010, 01:57 PM   #11
Fred K-OR
Senior Member
 
Fred K-OR's Avatar
 
Join Date: May 2010
Location: Stayton, Oregon
Posts: 3,793
Default Re: How much red do you see in your moto meter?

I have a motometer on my rig also. It does show a little red when going up a long hill. But I have a large radiator and a 4 blade fan.

I read somewhere that to get a better reading, you could cut the end hooks off a brake spring, slip it over the end of the motometer that is in the radiator and it will give you a more correct reading. Don't have an extra spring and have not tried it yet.
__________________
Fred Kroon
1929 Std Coupe
1929 Huckster
Fred K-OR is offline   Reply With Quote
Old 07-10-2010, 08:44 PM   #12
29RPU
Senior Member
 
29RPU's Avatar
 
Join Date: May 2010
Location: Visalia, California
Posts: 246
Default Re: How much red do you see in your moto meter?

Mine never shows. Small sample ownership, only had it about 5 months, but so far nothing.
29RPU is offline   Reply With Quote
Old 07-10-2010, 10:13 PM   #13
Jerry Parr WI
Senior Member
 
Jerry Parr WI's Avatar
 
Join Date: May 2010
Posts: 619
Default Re: How much red do you see in your moto meter?

I drove a few hundred miles the last 2 days so my recent experience is as follows. It's an original motometer and I held my speed at a steady 55 MPH. Setting in the sun at 85deg with the engine not running the red line is about 1/2 in below the circle. Driving at 75deg the red is about 1/4 in below the circle. Driving at 85deg the red is about 1/8 below the circle. Setting at an idle for an extended period at 85 the red just touched the circle. Never overheated so not sure of that condition but remember once when it was low on coolant it did get to the top of the circle. Not this year.

New problem I had today was the gasket between the cap halves. It was a repro gasket of some red material which appears to have melted. Made a sticky mess like it had been a red rubber band. I have another new one but it appears to be the same hard reddish material. Anyone else have this gasket problem.
Jerry Parr WI is offline   Reply With Quote
Old 07-10-2010, 11:02 PM   #14
JD Miller
Senior Member
 
Join Date: Jul 2010
Location: Yorktown, VA
Posts: 139
Default Re: How much red do you see in your moto meter?

It seems that most of the reproduction moto meters are more for "looks" than to serve any practical purpose. I would not put much stock in how they read.

I have two original moto meters. In cold weather, below 60 degrees or so the red will just show. Running at speeds in the 45-55 MPH range with temps at 80 degrees up to the high 90s the red will climb to about an 1/8th of an inch below the circle.

In hot weather, on a long climb up hill the red will just move up to the bottom edge of the circle. Also, in a parade the red will just about get to the bottom of the circle.

After and extended run during high temps the red will move into the circle when the engine is shut off. Once started the red will drop back down below the circle.

Both of the meters read just about the same on the car.

How your motor meter reads is dependent on how accurate, or unaccurate, the meter may be. I see club member's meters that show little if any red yet they will have an over heating problem at sustained highway speeds and during parades.

It's a crap shoot on just how your moto meter may read.
JD Miller is offline   Reply With Quote
Old 07-10-2010, 11:09 PM   #15
Mike V. Florida
Senior Member
 
Mike V. Florida's Avatar
 
Join Date: May 2010
Location: South Florida
Posts: 14,052
Send a message via AIM to Mike V. Florida
Default Re: How much red do you see in your moto meter?

About a quarter inch when stopped for several minutes at idle when the temp is in the high 80's.
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II
Mike V. Florida is offline   Reply With Quote
Old 07-11-2010, 09:53 AM   #16
MikeK
Senior Member
 
MikeK's Avatar
 
Join Date: May 2010
Location: Windy City
Posts: 2,883
Default Re: How much red do you see in your moto meter?

The "red" indication at a given temp varies widely from one Motometer to the next.
Perhaps this will help:
__________________
Mechanical engineering 101: If you put an adjustment knob, screw, bolt, or tolerance specs on something, some people will immediately fiddle with it. If you mark it DO NOT TOUCH everyone will mess with it.
MikeK is offline   Reply With Quote
Old 07-11-2010, 11:29 AM   #17
cars56
Senior Member
 
Join Date: Jun 2010
Location: Queens, NYC
Posts: 212
Default Re: How much red do you see in your moto meter?

Don't trust my repro meter. Had a difficult time keeping it from flying off the car with the inside flange on the radiator neck, seemed to have solved that problem.
But just switched form tap water and 50/50 to 80% distilled + 20% 50/50 and 12 oz of Purple Ice, Let's see what happens.
Installing a 160 soon to be on the safe side.
To test a meter place it in the neck of a steam kettle and turn up the heat.
cars56 is offline   Reply With Quote
Old 07-11-2010, 11:52 AM   #18
Ice man
Senior Member
 
Ice man's Avatar
 
Join Date: Jun 2010
Location: Southern Pines, N.Carolina
Posts: 210
Default Re: How much red do you see in your moto meter?

If the base is not in water it won't show water temp. Iceman
Ice man is offline   Reply With Quote
Old 07-11-2010, 01:37 PM   #19
28 Special Coupe
Member
 
28 Special Coupe's Avatar
 
Join Date: Jun 2010
Location: Broken Arrow, Oklahoma
Posts: 63
Default Re: How much red do you see in your moto meter?

Thanks guys for all of your great feedback. I guess I won't worry to much about what the moto meter is reading as long as I get consistent results for my car.

I made a few changes to see if the overheating situation improves but haven't been able to take the car out for a drive yet. First of all, I took the car to one of the experts in my Model A club and we accurately set the timing. Next, I pushed the thermostat all the way down in the upper hose and clamped it in place. I didn't have the clamp there before and it got pushed up to the top. Finally, I flushed the radiator and switched out the water for a 50/50 antifreeze mix. Hopefully that will do the trick. If not, I guess I'll switch back the 4 blade fan and see what that does.
28 Special Coupe is offline   Reply With Quote
Old 07-11-2010, 04:05 PM   #20
700rpm
Senior Member
 
700rpm's Avatar
 
Join Date: May 2010
Location: Portland, Oregon
Posts: 5,317
Default Re: How much red do you see in your moto meter?

I once heard a story that Henry didn't like motometers. He purportedly said, "You don't need a motometer. Any fool can look out at the radiator and see if it's boiling over or not."

Might be apocryphal.
700rpm is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 12:07 AM.