• 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)
Tips
Tips

TR2/3/3A Radiator drain tap?

karls59tr

Darth Vader
Country flag
Offline
Just drained the winter coolant out of the rad.The lever on the drain tap moves way too freely from straight ahead and I'm concerned it would not take much of bump to move it and dump the coolant. What's inside and is it DIY repairable? How much trouble is it to get it out? Dont want to crack the housing? I know they are not that expensive but I kind of wanted to get the car on the road rather than wait for a new on to arrive. Thinking of just wrapping the lever in place with plumbers tape as a temporary measure.
 

TR3driver

Great Pumpkin - R.I.P
Offline
Original tap? It's just a solid body with a tapered hole where the tapered plug fits. On the bottom is a shaped washer, spring, and cotter pin. Remove the cotter pin, and collect the spring and washers. The tap will probably fall out, but you might have to turn it a few times. The spring tends to rust and get weak, or even break altogether. I found a suitable substitute in the parts bin and cut it to length. Sorry, no idea where it came from.

In a pinch, I've been known to wrap a worm-drive hose clamp around the handle and the body, so it forces the plug into the hole. I was on a drive away from home when I did that; then forgot all about it and drove that way for several years. Discovered it when I went to change the coolant the next time :smile:

Note that the radiator tap and the block tap are actually slightly different even though they look the same. The block tap has straight threads and takes a fiber washer, the radiator tap has tapered threads.

Also, there is a standard radiator drain valve that will fit and work fine. Doesn't look original of course, but might be an alternative. I always take the original tap out when taking the radiator to a shop, because they will replace it.
 

TomMull

Luke Skywalker
Silver
Country flag
Offline
Note that the radiator tap and the block tap are actually slightly different even though they look the same. The block tap has straight threads and takes a fiber washer, the radiator tap has tapered threads.

BSPT for the radiator tap??
Tom
 

TR3driver

Great Pumpkin - R.I.P
Offline
Sorry, don't know for sure offhand. I thought it was 1/4" NPT, as that's what my radiator shop always puts in and it seems to seal fine. But you can often get away with a slight mismatch with tapered threads, so it might have been 1/4" BSPT (19 tpi instead of 18) originally.

BSPT for the radiator tap??
Tom
 

CJD

Yoda
Country flag
Offline
There is a spring which presses the valve cone into the valve. It sounds like your spring may have corroded away. It can be replaced, assuming the valve is otherwise in good condition.
 
Similar threads
Thread starter Title Forum Replies Date
TRMark TR4/4A Leaking Drain Tap before I could even get the radiator full Triumph 1
Tinkerman TR2/3/3A TR3 Radiator Drain Tap Triumph 2
I Bugeye radiator drain tap help please Spridgets 4
C radiator drain tap Austin Healey 4
Aldwyn Radiator Drain Tap: Blimey! How do you do it? Triumph 13
A anti-seize recommendations for Radiator Drain Tap Austin Healey 10
H Frozen Radiator Drain Tap Lever Austin Healey 6
M Radiator drain plug question Triumph 5
memphis Radiator Drain Valve Austin Healey 18
V TR6 Drain TR6 radiator Triumph 3
Simmo MGA Aluminium Radiator AUSTRALIA MG 9
MadRiver TR5/TR250 TR250 Radiator Cap Recommendations Triumph 1
nevets Radiator Service Austin Healey 6
G TR4/4A Radiator Fan and plates spanning bolts Triumph 6
S TR2/3/3A Putting dish soap in the radiator to remove grease Triumph 10
mrv8q TR2/3/3A Rebuilt or new radiator? Triumph 12
J BJ8 Radiator Fan Austin Healey 12
71TR6 Triumph TR4 Coventry Radiator with crank hole- recently refurbished Triumph Classifieds 0
R TR6 Radiator protection shield differences Triumph 0
K For Sale TR3 Radiator Guard Triumph Classifieds 0
S For Sale Mg tf new radiator shell-slats-false nose-emblem MG Classifieds 2
Kurtis TR4/4A TR4 Radiator Guard Attachment Triumph 7
edkap2002 TR6 lower radiator hose fitting Triumph 2
nevets Radiator Overflow Tank Austin Healey 23
K TR2/3/3A Radiator coolant level? Triumph 5
D TR2/3/3A radiator overflow restrictor Triumph 9
T TR2/3/3A Question on TRF radiator cap GRC103 Triumph 1
G 100/6 Radiator cross member Austin Healey 6
D TR2/3/3A assembly, TR3A rear fender and radiator stays Triumph 22
S TR2/3/3A and the radiator was leaking. Triumph 7
K TR2/3/3A Volvo 122 radiator fan on a TR3? Triumph 3
B Radiator Baffle Installation Austin Healey 4
S Painting a BJ8 Radiator - any advice? Austin Healey 17
S Bugeye Radiator Tank Plug Size? Spridgets 24
FlyingCat Spitfire Electric Radiator Fan Triumph 10
T Radiator Shroud "Chinese Red" Match Needed Austin Healey 10
FlyingCat Wanted 1979-80 Spitfire Radiator Mount Bracket and Cradle Triumph Classifieds 0
FlyingCat Spitfire Radiator and fan Triumph 5
aero3113 Radiator overflow catch tank Austin Healey 15
Sarastro TR4/4A What radiator do I have? Triumph 4
Patrick67BJ8 Radiator & Engine Flush Austin Healey 10
Drone Dog BT7 radiator Austin Healey 1
M Radiator paint Austin Healey 14
RAC68 Radiator Core Replacement and Sleeve Thermostat Alternatives Austin Healey 20
RAC68 Recovery Cap for Original Healey Top Tank Radiator Austin Healey 7
JFS TR2/3/3A Radiator fan temp probe Triumph 3
M For Sale TR 3, radiator & heater Triumph Classifieds 1
longbridgehealey Radiator shroud Jaguar 0
longbridgehealey Radiator shroud Jaguar 0
Jeepster Radiator replacement. Austin Healey 9

Similar threads

Top