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TR2/3/3A Frame Question TR3 vs TR3A

  • Thread starter Deleted member 3577
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What is the difference between a TR3 & a TR3A frame?

We need a new frame for the LaDawri and there is a TR3A for sale locally.

Don't know what one is on the car now.
(It might even be a TR2???)
 
I'm not a total expert but I think early tr3s had front drum brakes. The difference would only be in the spindle so the frames would be the same. The rest is mostly in body styling.
 
TR3

1955 (Oct)
TS 8637 1 3/4" Stud Mounted Type H6 Carbs, Grille Flush w/Front Apron
TS8997E: Change Manifold Inlet; Added Cam Bearings
TS 9350 E Change Manifold Inlet, Head Gasket
TS 9731 E Changed to Stiffer Pistons

1956 TS 9666
TS 9952 Change in Filter Head (Oil)
TS 11384 Added Second Silencer to Tailpipe
TS 11716 Change to Headpipe Clamp/Bracket
TS 12567 Changed Windscreen Wiper Motor Type and Location
TS 12606 E Changed to High Port Cylinder Head Assembly
TS 12650 E Change to "Flow through" Filter Head
TS 13046 Changed from Lockhead to Girling Braking System, Changed Master Cylinder,
Front Disc Brakes, Rear Brakes, Rear Axle, Differential, Suspension
TS 13046 Changed to large "T" Pedal Pad
TS 13052 E Change Manifold Inlet, Cylinder Head Studs
TS 14823 Changed Rear Axle Cover

1957 TS 15014
TS 15334 Changed Wheel Cylinder Assembly
TS 15497 Changed to Flexible Fuel Pipe, Petrol Tap
TS 15706 Changed to Combined Tail Pipe/Silencer
TS 18230 E Changed to Chromium-Plated Rocker Cover, Changed Oil Filler/Breather
TS 18902 Change in Oil Drain Plug

1957 (Aug) TS 22013 LAST TR3


on the link at VTR TS13046 is where that change happened so just check the production number...

https://www.vintagetriumphregister.org/TR2/TR2-production.shtml

Good luck
 
The 3A frames did have some tabs added for the Girling brakes; but I believe are fully backwards compatible. Very late frames might need the Lockheed tabs added, but TS39781LO still had the drum tabs on it.

And compared to swapping frames, welding on a couple of tabs is pretty trivial.
 
I still have a few good bare frames left, if you do not score the parts car. They are 400.00 and to be cost effective you need to be near a forward air depot for pickup as I sent the last one to Indianapolis, Indiana for just under 200.00 strapped to a pallet. John
 
Excellent...

That was just the information I needed.

Thank you all very much! :thumbsup:
 
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