• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)

TR2/3/3A Smiths Heater rebuild.


Country flag
The heater I acquired for my TR3A had a very small leak and I decided that trying to repair it or replacing the core with another 50 year old core was not the best idea so I started looking for other ideas.
A core is available from Moss and Rimmer but they are very expensive. I looked at the build it yourself core and started to check on parts but decided to keep looking on the Net.
I came across the site of what I think is the replacement core manufacturers and the price was much better. Further digging I stumbled on Holden Classic in the UK and they had the core with the shorter clips that are needed to hold the heater together and they had the best price so I ordered a core on Monday night. It arrived on Friday morning!!

The Core.
New heater core.jpg
Close up of core.jpg
Inside of core.jpg

I realized that the water connection pubes are longer than the original core and would stick up too high so I made 3 extended studs to position the heater assembly lower in the bracket. The new studs lower the heater about 2"

Mod to studs.jpg
The fan clamp would position the fan too low in the case so I had to cut the clamping collar down to about 3/8" and added a clamping collar to give me plenty of material for a clamping screw. I also installed the fan with the clamping collar away from the heater motor and the collar flush with the end of the shaft. The fan then cleared both the case and core.
Fan impellor modified.jpg
Fitting the heater was a little easier because I had a little more room for the hoses and clearance for the defrost duct.
I ran the car and was pleased with the heat output. Not having run with the old core I had nothing to judge the output to but It seemed good.

Heater installed.jpg
Heater installed 2.jpg



Country flag
Hello John

You are welcome.
Thought it may help another forum member. I did think about doing a Tush style video but working and doing video at the same time was too much for me. I do not know how he keeps it up. Along with the editing.

Similar threads
Thread starter Title Forum Replies Date
D Smiths Heater rebuild. Restoration & Tools 1
T TR2/3/3A Smiths Heater Checkout Triumph 7
J Help with Smiths heater. Other British Cars 4
W 100-4 Smiths heater clips Austin Healey 11
luke44 TR2/3/3A TR3 Smiths Heater Plate Triumph 3
Tinkerman Smiths Heater Lables Triumph 11
A Link to Smiths Heater Article Now Fixed Triumph 0
A How To Restore a Smiths Heater Restoration & Tools 8
A Smiths Heater - Completely Restored Triumph 3
A Weekend Project- Smiths Heater Restoration Triumph 13
A Smiths heater Parts Triumph 8
S Which Smiths heater in '65 AC Cobra? Other British Cars 5
T T-Series smiths or arnolt heater installation in an MGTD MG 1
S WANTED: Healey BN1 "Smiths" Fuel Gauge (Dead or Alive) Austin Healey Classifieds 3
nichola TR6 Smiths volt gauge needle barely moves Triumph 25
T Wanted Smiths fuel gauge for Mk 1 Bugeye Sprite [FG2530/31] Spridgets Classified 1
RAC68 Calibrate Smiths Tachometer Austin Healey 12
B For Sale Austin Healey 100 Smiths Fuel Gauge, Dual Safety Gauge, Speedometer and Tachometer Austin Healey Classifieds 0
A TR2/3/3A Restoring Smiths heaters as fitted to a 1959 Triumph TR-3A Triumph 4
Jim_Gruber Source for Smiths Gauges in UK I believe Spridgets 7
B Smiths RVI Positive Ground Tachometer Bench Test ? Austin Healey 24
drambuie Converting a smiths clock to positive ground Austin Healey 12
G help id this smiths speedo Other Cars 2
K Smiths Electric Temperature Gauge Triumph 7
Tinkerman Jaeger and Smiths Speedometers Triumph 5
RJS Smiths PCV Valve Differences? Triumph 2
M Smiths Fuel Tank Sending Unit Austin Healey 3
R smiths guage problem- need advice Austin Healey 4
M Smiths fuel tank sending unit Triumph 1
C Smiths or Lucas Gauge? Triumph 8
58Custom New! Schematic for Smiths RVI tachometer Spridgets 9
A New WIKI regarding Smiths Heaters Triumph 0
amcboy A little about Smiths gauges... Triumph 31
tosoutherncars NOS Smiths gauges: Bugeye? Spridgets 4
TR674 Smiths Speedo Triumph 9
B Smiths Dual Guage Repair Spridgets 13
wkilleffer MGB Question about the Smiths temp. gauge- 74 MGB MG 19
coldplugs Be thankful [Re Lucas, Smiths, SU, et al Other British Cars 10
dklawson Needed - 4" Chrome Smiths Bezel Triumph 4
A Brighter Smiths Instrument Bulbs --- Any ideas? Austin Healey 25
Kira Smiths Clocks Pre 1950 Other British Cars 6
G Tacho Smiths RVI2401/00EN needed MG 0
J Smiths Tachometer MG 8
Lin Heater water valve question Spridgets 2
T Bug Eye Heater Switch Help Spridgets 2
T Heater Door Spring Austin Healey 1
steveg TR6 Question - which bolt for heater return pipe bracket Triumph 3
dbenichou289 TR2/3/3A Heater electrical connections Triumph 4
H BJ8 Heater Valve/Control Tap Austin Healey 3

Similar threads