Smiths Chronometric Speedometer Serial Numbers

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The variety of speedometers fitted to the MGB is a common source of confusion, especially in relation to the fairly common practise of swapping O/D and fully synchronized transmissions into MGBs that didn't originally have them. This will consequently cause the speedometer and odometer to read too high or too low, not an ideal situation.

Smiths Chronometric Speedometer Serial Numbers. Speedometers Email Tel +44 (0) 1 SPEEDOMETERS UP TO 1964 Regarding Smiths speedometers a major change was made in 1964 Pre 1964 machines fitted the following. The larger 3' instrument was of the Chronometric type. This in reality is a two in one clock a speed recorder and a distance recorder. Smiths Chronometric Speedometer Serial Numbers Magic Bullet Suite 11 Mac Torrent Pinnacle Studio 11 Pal Keygen Generator Tuneskit Apple Music Converter For Mac Crack Pdr Exe Has Stopped Working Enable Tls 1.2 On Opera For Mac Omnisphere Challenge Code Keygen For Mac. From my description, please let me know what you found, and the speedometer serial number and the make/year of your car. I want to hear everything! Please email me at ARhodes@compuserve.com. Please refer to the photographs on a separate page of my website. These ought to assist greatly with understanding the workings of the speedometers. Antonio Zoli Shotgun Serial Numbers What Is The Newest Version Of Excel Powerpoint For Mac 2011 Add Equation Internet Explorer For Mac 10.9 5 Smiths Chronometric Speedometer Serial Numbers Window 7 Window Media Player Tamil Typing Software Free For Windows 7 32 Bit Delux Mouse Driver For Mac.

'Revs' in the table below referrs to the turns-per-mile (TPM) the speedo expects to receive from the transmission via the speedometer cable. The TPM of your speedo should be printed somewhere on the face, along with a serial number.

Any variation in tire size from original specifications will of course also have an effect on the accuracy of your speedometer. See the discussion on tires and tire sizes in the Service section of the Tech Library on this website for more information on this topic.

The NAMGBR also has a cross reference table from car numbers to speedometer serial numbers by Orin Harding. [Ed. Note- this link seems to have gone MIA, so I've duplicated the table below.]

KMR reports that if you have a setup that doesn't correlate to any existing speedometer type, Nisonger can put a new faceplate on your speedometer, and recalibrate that way. Check the Directory section of this website to find a list of companies that provide Smiths and Jaeger instrument servicing.

Tooth count (transmission):

  • Overdrive - 21
  • Normal - 27

Thanks to Bruce Mills for scanning and submitting in this chart - it's a lot more complete than the chart I was building!

Smiths Chronometric Speedometer Serial Numbers Lookup

MGB Smiths Speedometer Range and Turns-per-mile (Revs) Reference Chart

Smiths chronometric speedometer serial numbers chart

MGB Speedometer Cross Reference Chart

Smiths Chronometric Speedometer Serial Numbers

by Orin Harding, NAMGBR

Smiths Chronometric Speedometer Serial Numbers List

The information displayed here is from MGB Driver, the MG Mailing List, on the Internet, or other sources. The North American MGB Register assumes no liability for the accuracy, safety, or legality of these contributions. Any opinions expressed here are those of the contributors and do not necessarily reflect the opinions or policies of the North American MGB Register.

Smiths Chronometric Speedometer Serial Numbers Chart

Start End
Car # Car #
Part
No.
Speedo
S/N
M/KPHTransNotes:
101 - 138400NotGermany
BHA 44786125/04MPHSTD
BHA 44786124/04AMPHSTD
BHA 44786124/00MPHSTD
BHA 44796125/05KPHSTD
BHA 44796125/05AKPHSTD
BHA 44796144/01KPHSTD
BHA 44806125/06MPHO/D
BHA 44806125/06AMPHO/D
BHA 44806144/02MPHO/D
BHA 44816125/07KPHO/D
BHA 44816125/07AKPHO/D
BHA 44816144/03KPHO/D
101 - 138400Germany
BHA 45746144/05MPHTire size 560-14
BHA 46366144/15KPHTire size 560-14
BHA 46376144/13KPHTire size 155-14
BHA 46386144/14KPHTire size 165-14
138401 - 153877Canada
138401 - 332925Not USA, Sweden, Germany, orV8
BHA 47076144/20MPHSTD
BHA 47096144/21KPHSTD
BHA 48126144/23MPHO/D
BHA 48136144/24KPHO/D
138401 - 158230Not USA, Sweden, Germany, orV8
BHA 47076144/20MPHAuto
BHA 47096144/21KPHAuto
158231 - 328800Not USA, Sweden, Germany, orV8
BHA 48686144/28MPHAuto
BHA 48696144/29KPHAuto
332395 - 361000Market Unknown
BHA 52796144/20BSMPHSTD
BHA 52806144/21BSKPHSTD
BHA 52816144/23BSMPHO/D
BHA 52826144/24BSKPHO/D
360301 - 410350Market Unkown
BHA 53395230/13MPH
BHA 53405230/14KPH
187211 - 258000Sweden & Germany
BHA 49245227/20KPHSTD
BHA 49255227/22KPHO/D
BHA 49265227/24KPHAuto
258001 - 410000Sweden & Germany
BHA 50875231/08KPHO/D
BHA 51645231/95KPHO/D
138401 - 2580000USA, USA for Germany &Canada
37H 37665226/05MPHSTD
37H 37665226/03MPHSTD
37H 37665227/07MPHSTD
37H 37685226/08MPHO/D
37H 37785227/12MPHO/D
37H 41805227/16MPHAuto
258001 - 282419USA, USA for Germany &Canada
BHA 50845231/00MPHSTD
BHA 50865231/04MPHO/D
282420 - 410000USA, USA for Germany &Canada
BHA 51615230/065MPHSTD
BHA 51635230/085MPHO/D
BHA 52105230/11SMPHV8 (Except police)
Change point unknown, but
after car # 410000
AAU 30355234/00MPHRHD
AAU 3036Z 65465MPHRHD Police
AAU 30275373/00MPHLHD




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