• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

Smith heater rebuild

Share this page

6

66greenweenie

Freshman Member
Platinum
Country flag
Offline
I am rebuilding the Smith heater for a 1967 BJ8. The factory parts book and the Moss parts list call for 2 o rings on the heater valve connection to the core post incoming water line. I cannot seem to get a clarification on where the lower o ring as shown is placed. I have talked to Moss and they just say it goes on the bottom(?). I have searched the internet for info and had no luck. i would appreciate any guidance on how to place the bottom o ring correctly so this valve does not leak.
66 greenweenie
 
Bob_Spidell

Bob_Spidell

Yoda
Country flag
Offline
I'm looking at the Moss catalog and can't figure out which O-rings you're referring to; if you give us the MM part# maybe someone can help. I haven't worked on my BJ8's heater for years, fortunately, but I might be able to summon a memory.
 
Healey Nut

Healey Nut

Luke Skywalker
Country flag
Offline
Theres only one O ring . It goes between the flanges where the heater valve screws on .
 
OP
6

66greenweenie

Freshman Member
Platinum
Country flag
Offline
Bob: Thanks for the response. The two o rings are 117 MM#282-760 and 117a MM#282-760. 117 goes between the valve adapter and the valve. 117a is shown going on the heater core post below the top of the heater box. 117a is the problem I am having. I see no way that this provides any sealing value. The o ring between the valve and the valve adapter is the only seal I see as necessary. That is my dilema.

Thanks.
 
OP
6

66greenweenie

Freshman Member
Platinum
Country flag
Offline
I agree with this o ring going between the water valve and the adapter. My only concern is that the factory parts book and the Moss parts catalog show 2 o rings 117 and 117a. I want to be sure when this is reinstalled, that the heater does not have to be removed later because of leaking.
Appreciate any further thoughts.
Thanks
 
Bob_Spidell

Bob_Spidell

Yoda
Country flag
Offline
When I had my heater out I didn't tear it down that far (only the valve was leaking). So, my SWAG--'Scientific Wild-Assed Guess'--would be that 'a' is mostly just a spacer, maybe to help prevent a rattle and/or possibly some oozing of coolant (is the 'core seal' sweated-on, with solder?). Same parts, they're cheap, I'd put one there unless it interferes with getting the whole box back together. Couldn't hurt, and you won't lose any points at concours ;)
 
BigGreen

BigGreen

Jedi Warrior
Silver
Country flag
Offline
" .. maybe to help prevent a rattle .. "

Agree with Bob. I put one between the core and the cover. Seems right together with the felt strip on the other side of the core
 
OP
6

66greenweenie

Freshman Member
Platinum
Country flag
Offline
Bob:
I had the core unit cleaned and tested to 15 psi by a radiator shop. There was a small leak that was resoldered and retested. I am going to l
use the o ring between the valve adaptor and the valve. I will place the other as the Moss catalog shows and go from there. Thanks for the insight into this.
 
Bob_Spidell

Bob_Spidell

Yoda
Country flag
Offline
You're welcome. I always fall back to the old saw "If it wasn't absolutely necessary the BMC beancounters wouldn't have allowed it."
 
Similar threads
Thread starter Title Forum Replies Date
M BE Smith's Heater Info Plate Spridgets 3
BillyB62 TR2/3/3A Is this Smith heater junk? Triumph 4
D Smith's Heater Box - AH Spares Spridgets 9
Lin Cape international heater to replace Smith's Box Austin Healey 7
7 Smith's Heater Wiring Question MG 15
Z BN1 Smith heater Austin Healey 4
T Removing the Smith's Heater Spridgets 6
Lin Smith's Heater Water Valve Austin Healey 2
G Smith's temp gauge repair Restoration & Tools 4
Retired2020 TR5/TR250 TR250 smith gauge Triumph 7
P For Sale O-rings for Smith and Jaeger gauges. Other British Classifieds 2
T smith guage lights Austin Healey 2
apbos Tachometer ID Smith's Rn1412/00 Spridgets 5
Morris EDIS and Smith's RVC Tach Spridgets 4
doates Smith's PCV Triumph 1
HerronScott TR4/4A Smith's Instrument List for TR2-4A? Triumph 1
I Recommendation for Smith gauge repair? Triumph 25
longbridgehealey smith oil/water gauge Austin Healey 7
longbridgehealey Nisonger in NY for Smith gauges Austin Healey 7
C Smith's Voltmeter from Moss MG 3
M U.S. source to repair or replace Smith's gauge Restoration & Tools 10
G Cool little Smith's Replica clock Triumph 9
B Loss of Everett Smith Austin Healey 2
M Smith Gauges MG 7
B TR6 Heater core Triumph 0
E Heater install Spridgets 2
R TR6 Heater control bezels TR6 Triumph 2
R 3000 Heater Valve Austin Healey 4
KVH General Tech Heater control valve/cable Triumph 1
R TR6 Heater box Triumph 6
KVH General Tech Heater and Vent Control Cables--TR2 thru TR4, and more . . . Triumph 3
E MGB MGB heater motor problem MG 3
jfarris TR2/3/3A Plug/cap sizes to block off heater Triumph 5
D Heater knob removal Spridgets 6
Scotsman TR2/3/3A Tr3 heater conversion Triumph 9
R Bugeye heater cable Spridgets 12
E austin van heater removal Other British Cars 0
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
jlaird MGB Heater MG 5
C Wanted WANTED Heater fan motor and housing for 1964 MK3 Sprite Spridgets Classified 2
Healey Nut Heater Box Installation Austin Healey 4
CJD TR2/3/3A Heater Delete Triumph 15
HealeyPassion Aftermarket heater/defroster with 3 speed fan Austin Healey 15
F TR6 Heater Triumph 7
C Water flow in heater? Austin Healey 5

Similar threads

Top