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Triumph TR6 - TR6 Heater

Great site guys! Wonderful camaraderie shown here but I guess that's what makes Triumph owners special. Got a heater problem. Owned & scrapped 4 TR4A's but never had a heater glitch so still don't know if there's a traditional heater core in the TR6 buried in that heater box. Got 2 shop manuals but no details at all. Got a leak into passenger side but all hoses look okay. Suspect the core is kaput & I'm ready to pull the heater but any advice would be appreciated. Hey Charlie in Kitchener - you seem like the TR6 wizard - any ideas?
Bob Evans

Hi Bob

Yep there is a standard type core in the heater box. Spot welded but can be taken apart.

Bill
Bill Brayford

Hi Bob
I replaced the blower motor last winter, the heater box comes apart quite easily, it is held together with numerous small self tappers.
The main downer is it is quite a major job to remove the heater from the car as it involves taking most of the dashboard out.
Ron
R. Algie

Thanks Bill and Ron. Appreciate your help on the heater. Been working on TR's and other LBC's too long to think this would be easy. Why did they put the darn core in the heater box anyway? Too easy to put it elsewhere? Maybe I'll just bypass the heater for now & pull it apart in the Fall but some heat sure would be nice some days.

Regards,

Bob
Bob Evans

Bob
Welcome.
By now you know there is a core so I will not tell you again that there is one....oops:)
Yes the core could be bad. The 2 hoses that connect to the heater core are connected to a fire wall hose connection. Is your loss of fluid directly out the bottom of the heater box assembly or is it over at the right side where the hoses connect. The 2 hoses have very sharp bends to them and IMHO must be replaced with the correct "preformed" replacement parts. Have a close look at the hoses Bob and have a closer look at the clamps holding the hoses to the fire wall adaptor. These hoses are a PITB to replace.
The heater is very easy to bypass back in the engine bay.
Rick C
Rick Crawford

Thanks Rick. Looks like it leaked at the firewall & came in from there as there was a thick rusty clay-like residue on the firewall shelf. I actually thought red clay had invaded the under bonnet area till I realized there was a pinhole in the shelf & the rusty coolant had come in through the hole & left the residue behind. Got the car three weeks ago from BC so had no idea what might have gotten in under the bonnet but it all seems clear now - trouble. Probably those pipes and a worn out core to boot. Think I'll bypass it for now & drive it in the warm weather & pull the heater later. Too much other stuff to take care of with suspension, ignition bits and carbs to sort out. Many parts on order so this particular problem will keep for now.

Regards,

Bob
Bob Evans

Hi All

The only good placement of a heater core I have ever seen for easy service. Is on my 41 Chev 1/2 ton. Sits wide open right under dash with 2 hoses and an open fan behind. You can turn the whole works if the Misses is riding along. Just to keep her toasty.

No ducts to the windshield to bother with. Thats why the windshield tilts out on its crank. Even temp both sides no mist or frost.

Heater was a luxury option for a truck by the way.

Hey Ron mine had 2 small tack welds both sides 72. May have run out of screws that day..:)

Bill
Bill Brayford

Hi Bill
They must have changed the design, mines a '75 and the self tappers look original.
Not very often car manufacturers make it easier to dismantle something as the model progresses!!
Ron
R. Algie

It's possible to get it out without pulling the dash but you end up unscrewing a bolt through the ashtray!

I was once told that the trouble is always the hoses, but not for me!

My '71 had the screws!

Charlie
EC Smith

This thread was discussed between 23/05/2004 and 07/06/2004

Triumph TR6 index

This thread is from the archive. The Live Triumph TR6 BBS is active now.