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eyesie
07-29-2013, 11:46 PM
I started disassembling my TR4 some time ago & took off two plates in the engine bay. My wife put them in a safe place & now I can't find them.:grumpy: The numbers are CT12815L, and 12721CT. One I believe is the commission number. What is the other number. Thanks for help as always. Alan

fpstude
07-30-2013, 12:12 AM
CT12815L is the commission number. It is on a rectangular aluminum / black plate mounted next to the clutch and brake master cylinders on the drivers side. 12721 CT is the body number located on the passenger side near the voltage regulator It is an aluminum plate about 1/2" by 3". The plate with the commission number also has the paint number and trim number.

eyesie
07-30-2013, 12:27 AM
Thanks for the reply

Geo Hahn
07-30-2013, 07:48 AM
Here's where that chassis tag is on mine (the plain aluminum one, the green is an STC tag which your car may or may not have had):

https://i1214.photobucket.com/albums/cc499/Ahwahnee18/TR4/TR4ChassisTag.jpg

This gives some idea of the size and font of that tag in case you want to make one (I don't know of a source):

https://i1214.photobucket.com/albums/cc499/Ahwahnee18/TR4/ChassisTag2.jpg

And this shows the commission number tag in place:

https://i1214.photobucket.com/albums/cc499/Ahwahnee18/TR4/OilPressureFlexLineClip.jpg

My original commission plate looked like this -- thanks to Standard/Triumph's decision to place them near the hydraulics on LHD cars:

https://i1214.photobucket.com/albums/cc499/Ahwahnee18/TR4/CommissionOriginal.jpg

Replacements are available for these and can be fairly well fashioned using an inexpensive set of 1/8" stamps. Practice on a Coke can, set up a jig to manage spacing, use rivets to affix, ask if you need to know more.

HarryL
07-30-2013, 09:29 AM
Geo,
In your photo showing the chassis and STC tag; what are the 2 small bolts passing thru the body
connected to ?
Harry

HerronScott
07-30-2013, 10:56 AM
Geo,
In your photo showing the chassis and STC tag; what are the 2 small bolts passing thru the body
connected to ?
Harry

If I remember correctly, those were originally for the radio speaker. When I restored my TR4A back in the early 80s I used the holes to suspend a metal plate to which I mounted a small amp.

Scott

HarryL
07-30-2013, 10:59 AM
Thanks Scott.

Geo Hahn
07-30-2013, 01:19 PM
Yes, radio speaker. Most TR4s radio installations used this unit for the single speaker, hanging from those 2 bolts above the passenger footwell:

https://i1214.photobucket.com/albums/cc499/Ahwahnee18/TR4/speaker_zps07430030.jpg

Darrell_Walker
07-30-2013, 01:22 PM
Yes, radio speaker. Most TR4s radio installations used this unit for the single speaker, hanging from those 2 bolts above the passenger footwell:


Ahh, I always wondered what those holes were for!