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TR4/4A Checklist for installing A-type O/D in TR4a

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Yep, I think thats right. And I believe all 4's had metal escutcheons, at least mine do and they are pretty late.
 
Well that explains why the TR4A and TR6 O/D switch share the same part number then.

How do I cut out the existing escutcheon? Just take a Dremel and carefully grind it out, or an X-acto knife?

(Anyone have a spare good O/D switch by chance)

Thanks guys!
 
Tom,

You need to get the overdrive escutcheon for a TR4A/TR6 and that will the place to mount the overdrive switch. Randall's picture has a good shot of it.

I don't think you could mount it to a non-overdrive escutcheon on a TR4A/TR6 by drilling out a hole for it like on a TR4 which had a blanking one and just needed a hole for it.

This should be a link to a TRF catalog showing it:

TRF catalog - escutcheons

Scott
 
Not to argue the point:

On my 66 TR4A - factory installed OD - switch on the right, opposite turn signal indicator. Metal escutcheion also. Chrome stalk.
 
Jim-

On your car, where is your light switch? I'd think you'd have a light switch stalk too on the right side. Only TR4s had the switch in the dash (or so I thought).

Randy
 
TRF also references OD on the <span style="text-decoration: underline">right</span> for TR4a only;

https://www.zeni.net/trf/specials5.33/70.php

So maybe everyone is right in that they had some ill-defined cut over period or maybe switch approaches when supply ran short?


CORRECTED TEXT (thanks Randall);

TRF also references OD on the <span style="text-decoration: underline">right</span> for TR4 only;

https://www.zeni.net/trf/specials5.33/70.php

So maybe everyone is right in that they had some ill-defined cut over period or maybe switch approaches when supply ran short?
 
tdskip said:
TRF also references OD on the <span style="text-decoration: underline">right</span> for TR4a only;

https://www.zeni.net/trf/specials5.33/70.php
Click to expand...
I'm missing something; don't see anything on that page about TR4A having the OD on the right. What I see says the switch on the right is for TR4 only, (meaning not TR4A).

I also see P/N 611974 listed for TR4A (not TR4), which clearly shows the OD switch mounted next to the turn signal switch. This is the same piece shown in the factory parts catalogue illustration that I posted above.
 
Only have the two stalks described, one on each side.
Can't get to the shop to verify light switch location and will have to find the dash to verify. 4A has been reduced to it's many parts and they are stored here and there. Car was wrecked, frame bent so I reduced it to usable parts, chucked the remainder.
 
TR3driver said:
tdskip said:
TRF also references OD on the <span style="text-decoration: underline">right</span> for TR4a only;

https://www.zeni.net/trf/specials5.33/70.php
Click to expand...
I'm missing something; don't see anything on that page about TR4A having the OD on the right. What I see says the switch on the right is for TR4 only, (meaning not TR4A).

I also see P/N 611974 listed for TR4A (not TR4), which clearly shows the OD switch mounted next to the turn signal switch. This is the same piece shown in the factory parts catalogue illustration that I posted above.
Click to expand...

Sorry guys, I goofed. You are absolutely correct Randall, I meant to write TR4 but I clearly have TR4A on the brain right now.
 
bgbassplyr said:
Only have the two stalks described, one on each side.
Can't get to the shop to verify light switch location and will have to find the dash to verify. 4A has been reduced to it's many parts and they are stored here and there. Car was wrecked, frame bent so I reduced it to usable parts, chucked the remainder.
Click to expand...

Jim,

That really sounds like a TR4 column setup if you don't have a light switch on the column. Any chance this car could have had parts installed from a TR4?

I'll have to dig out my TR4A owners manual to see if I can scan a picture of the dash layout. The TR4 had the rheostat for the gauge lights on the metal dash and the light switch was in the middle switch cluster. On the TR4A, the rheostat was moved to the middle switch cluster (in the location of the light switch on the TR4) and the light switch was moved to the column.

Here's a TR4 layout:

TR4 dash layout

I think my owner's manual is in the glovebox of my TR4A so I'll see if I can dig it out this evening and scan the same picture.

Scott
 
Finally got the TR4A owner's manual from my car and scanned the dash layout.

TR4ADash.jpg


TR4A dash layout

Unfortunately, they didn't include the overdrive switch.

Also, it's interesting that the left-hand drive picture appears to be a doctored version of the TR4 dash picture since it has the same picture number (B227), gauges are the original TR3/TR4 style, emergency brake is in the wrong position for a TR4A and it would appear that the wooden dash was "photoshopped". I guess they didn't have a left-hand drive model available when they went to create the owner's manual.

Scott
 
If it's any help, guys, the escutcheon OD switch for MKI and MKII GT6s was on the LEFT for LHD cars. That covers roughly 1967 through (very) early 1971 Triumph GT6s.

Probably the same for TR-4s, I'd bet. :yesnod:
 
HerronScott said:
Unfortunately, they didn't include the overdrive switch.
Click to expand...
Check the text on page 8; I think you'll find the paragraph I showed earlier in this thread.
 
Tom, why not put the switch on the shift knob?
or, are you trying to concourse it?
 
Or do both! I installed both an escutcheon and gearshift knob switch on mine. Easy to do, doesn't cost much either, adds to the fun. :yesnod:
 
I'm not sure I'm that coordinated or mindful to handle having two switches.... Those that know me can vouch for the accuracy of this statement. LOL

Cool idea however guys!
 
Some of these posts make NO sense. The TR4A (A!) has an overdrive switch set-up just like the TR6 except the stalk is chrome. If you have a left-hand drive car the correct placement for the overdrive switch is on the left side behind the turn signal switch.

The lighting switch is all by itself on the right side (again for left-hand drive cars only). Any other variation is not factory correct.
 
DNK said:
Tom, why not put the switch on the shift knob?
Click to expand...
Is there a hollow shift lever available in the TR4A pattern?

The TR3 shift lever is hollow of course, but I've heard it makes your fingers hit the dash in a TR4. And there is a hollow lever available for the Stag, but it's quite a bit longer than the stock lever. Seems like it would look out of place.
 
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