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Search: Posts Made By: Mark in MT
Forum: Model A (1928-31) 06-18-2020, 08:15 PM
Replies: 8
Views: 467
Posted By Mark in MT
Re: USA made original type split valve guides...

The ones that I have used with the GN logo are good, much better than the old NORS and aftermarket ones from 70's - 80's.
Forum: Model A (1928-31) 04-07-2020, 10:54 AM
Replies: 4
Views: 223
Posted By Mark in MT
Re: 1929 Sport Coupe speedmometer

Some times the speedo head will be stiff enough so that it winds up the cable like a torsional spring, then releases. This causes the speedometer to bounce or hunt and seek. Pull the head out of...
Forum: Model A (1928-31) 03-02-2020, 11:24 AM
Replies: 15
Views: 804
Posted By Mark in MT
Re: Stuck Cylinder Head Stud

I have a theory of thirds when it comes to taking out studs, 1 third will come out no problem, 1 third will make you sweat, soak and tap, then will come out, and the last third will require more...
Forum: Model A (1928-31) 02-03-2020, 07:54 PM
Replies: 9
Views: 570
Posted By Mark in MT
Re: Loud Speedometer!

Test the speedometer and the cable for smooth movement. If either one is dry, it can howl like a banshee! I find that the speedometers most often are the problem, the lube has dried out and turned...
Forum: Model A (1928-31) 02-01-2020, 07:42 PM
Replies: 3
Views: 350
Posted By Mark in MT
Re: 29/30 speedometer cable ?

Cables for oval faced speedometer have a round, flagged end on the drive end and a .124 square end on the speedometer end. These use a 1/2" dia. housing. The cables for the round faced speedos have...
Forum: Model A (1928-31) 11-28-2019, 06:25 PM
Replies: 24
Views: 2,335
Posted By Mark in MT
Re: Knocking at start up?

Piston slap, until oil gets up into cylinder, and pistons warm up. If it is more noisy when cold than warm, this may be it.
Forum: Model A (1928-31) 11-06-2019, 05:14 PM
Replies: 3
Views: 463
Posted By Mark in MT
Re: Odo Stuck - 1930 Round

Looks like a Waltham, the washer on the end will press off with a little effort. Done wrong and you can distort the wheels which will cause more binding. Nineteen pieces in the odometer assy, and...
Forum: Model A (1928-31) 10-31-2019, 06:27 PM
Replies: 7
Views: 744
Posted By Mark in MT
Re: contact info

I am the guy in Montana that restores speedometers.

Mark Nelson
www.marksspeedometer.com (http://www.marksspeedometer.com)

address and phone # on website. ...
Forum: Model A (1928-31) 10-07-2019, 09:59 AM
Replies: 6
Views: 796
Posted By Mark in MT
Re: Speedometer Repair

Odometer decals are easily available from most venders, but tricky to install and make look good. It is also a good idea to take odometer assy apart to clean, lube to make sure all is good for the...
Forum: Model A (1928-31) 09-23-2019, 02:42 PM
Replies: 32
Views: 2,371
Posted By Mark in MT
Re: How Far In One Day?

Longest day in mid July 420 miles from Polson, MT to Pendelton, OR, 95 degF in the afternoon across Eastern Washington. Our group had 2 small road sides repairs enroute, total of about an hour. ...
Forum: Model A (1928-31) 09-19-2019, 10:42 AM
Replies: 10
Views: 1,003
Posted By Mark in MT
Re: Peining Rear Mains

The steel front and center main caps are not peened, this would likely cause micro cracks in the bond between the Babbitt and the cap. The Babbitt poured into the cast iron parts needs to be peened...
Forum: Model A (1928-31) 09-14-2019, 09:42 PM
Replies: 6
Views: 722
Posted By Mark in MT
Re: Speedometer

Check the speedometer head itself, the input should turn easily with the tips of your fingers. Any tighter and you will have cable problems. The grease in the speedometer is 90 years old and hard as...
Forum: Model A (1928-31) 08-28-2019, 09:10 AM
Replies: 21
Views: 2,140
Posted By Mark in MT
Re: Speedometer test

The speed calibration can be adjusted to be fairly accurate ( +-2 mph from 20 to 60). I have found that they are not very accurate at low or high speeds, so I calibrate to be in spec 20-60 mph. ...
Forum: Model A (1928-31) 07-01-2019, 09:09 AM
Replies: 14
Views: 1,483
Posted By Mark in MT
Re: Model A Main Bearing Cap Molds

I pour the rear main caps with the same mold that I use for the block, I believe it is a home made version of the Kwik Way. Simple Aluminum mandrel, center section milled down to 1/2 diameter, shaft...
Forum: Model A (1928-31) 04-08-2019, 12:23 PM
Replies: 4
Views: 593
Posted By Mark in MT
Re: Speedo and cable problem

Some of the repro cables have short ends on the speedo end. The input of the Stewart Warners is round for the first 3/16 or so, then transitions to a square further down in the hole. If the cable...
Forum: Model A (1928-31) 03-28-2019, 11:43 AM
Replies: 8
Views: 900
Posted By Mark in MT
Re: Speedo is “jumpy”

Test the input of the speedometer, it should spin easily with the tips of your fingers. any tighter than that will wind up the cable like a long spring, causing the speedometer to swing wildly.
Forum: Model A (1928-31) 02-05-2019, 12:26 PM
Replies: 11
Views: 929
Posted By Mark in MT
Re: Waltham speedometer question.

The Waltham is a good speedometer, not as easy to work on as a Stewart Warner. There is only one means of calibrating the speed, whereas the Stewart has 2 adjustments. This makes the calibration...
Forum: Model A (1928-31) 12-04-2018, 10:37 AM
Replies: 6
Views: 799
Posted By Mark in MT
Re: speedo cable

I cut a small piece of rod or a 10-32 screw and drop into the hole to prevent the cable from migrating too far out of the speedometer head, this size is for the oval type cable. On the round face...
Forum: Model A (1928-31) 11-30-2018, 10:25 AM
Replies: 11
Views: 1,244
Posted By Mark in MT
Re: Speedo cable

The square end on the round faced cable is .104, on the oval face it is .124". A small end in an oval speedo may work for a while, but will soon round off the corners and spin out. The drive end of...
Forum: Model A (1928-31) 09-22-2018, 10:54 AM
Replies: 8
Views: 1,015
Posted By Mark in MT
Re: Speedometer suppliers or brands.

Stewart Warner, Northeast Appliance and Waltham all built speedometers for A's in both oval and round faces. .

Forum: Model A (1928-31) 08-03-2018, 08:38 AM
Replies: 26
Views: 5,108
Posted By Mark in MT
Re: Oval Speedometer/Odometer Question

About 5-10% of units I restore have magnets that need to be charged. I have a F. W. Stewart magnet recharger, basically a big adjustable electro magnet used to increase the strength of the magnet. ...
Forum: Model A (1928-31) 08-01-2018, 07:25 PM
Replies: 26
Views: 5,108
Posted By Mark in MT
Re: Oval Speedometer/Odometer Question

What kills most odometers is the green grease that Stewart Warner put in there 90 years ago has turned to stone, the little pot metal gears aren't strong enough to drive 5 rows of odometer wheel...
Forum: Model A (1928-31) 08-01-2018, 07:17 PM
Replies: 5
Views: 1,041
Posted By Mark in MT
Re: Model A Main Bearing-Block and Babbitt Temps

Another good reason to pre-heat the block is to get rid of any moisture, if hot Babbitt hits any water, it will explode and stick Babbitt to the ceiling. Don't ask me how I know.
Forum: Model A (1928-31) 07-27-2018, 08:52 PM
Replies: 23
Views: 4,448
Posted By Mark in MT
Re: Centering a Model A Crank, in a Block !

Excellent work Herm, always a pleasure to see how a real pro does it. My Kwik way lbm uses the jigs that locate off of the main bolt holes. After a clean up cut, I always check the center to ...
Forum: Model A (1928-31) 04-12-2018, 11:27 AM
Replies: 5
Views: 977
Posted By Mark in MT
Re: Zenith carb HELP

Good luck. It is tricky to get the plugs drilled out on center without getting into the cast iron. They can also be a bear to get swedged in so that they don't leak with out breaking the housings. ...
Showing results 1 to 25 of 207

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