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Is a Triumph overdrive tranny all that?

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SearcherMan: Do not know what to do with the interrupter
switches. You have to know, I am not a mechanic; but
I do go for it, nonetheless. So as you speak, likely
it will be somewhat over my head, then I research and
come back with better informed kinds of questions.

Sounds like you have some familiarity with these units
and it would be appreciated, I think, if you kind of
look in and help, to the extent you can.

Also, if I read you sooner, I might have been inclined
to store my original tranny; buy and install the
new, at the kinds of money you mention.

Wonder why nobody else has developed such a connection?

Anyway, thanks for the comments and the help.
 
BryanC said:
Julian,

If it matters to you, order a Heritage Certificate from the British Heritage Motor Centre

https://www.heritage-motor-centre.co.uk/shop/heritage-certificates/index.html


The certificate will tell you what came on the car as it left the factory including (I believe) engine number, gearbox number, options like OD, wheels ,etc.

The certificate might be cool even if the originality of the OD doesn't matter to you.

Bryan
Click to expand...

Hi Bryan,

I investigated my car over on the UK TR Register forum, where there is a guy who has access to all the records for TRs (saffrontr). He told me a lot of information about my car, including engine numbers etc.. In fact he advised me that the Heritage Certificate would not contain any extra information other than what he had told me, as these CKD cars were relatively poorly documented. I did get a Cert. for my MGB, and I agree they are very nice to have. I may get one for the TR6 anyway, even though I know it wont tell me anything I don't already know.
 
When I purchased my car, I was completly ripped off. I wanted matching numbers, and I got the original window sticker to prove it. However, when I got home, about 50 miles, the how OP was low. So, I pulled the engine, and guess what? The block was broke. So, now I don't have matching numbers, not exactly. However, you could say I do and I don't. I was able to get a NOS block, and they are not stamped. So, I guess the number do match, right?
 
I think the Belgium cars were left hand drive with fuel injection. Also, when putting in the OD, you need a different trans mount, interrupter swiches, different speedo cable, OD escutheon, OD switch, and OD harness, Speedo angle drive. You also need the tools to pull the rear bearing. And maybe I am forgettin something? But, on the other hand, I would not want a TR6 without OD. especially in CA with the big highways. And, one of the major parts suppliers is in the process of restoring a Belgium car. They are rare.
 
Bugeye58 said:
Can you even <u>get</u> a certificate for a CKD car?
Jeff
Click to expand...

Yes! If anyone wants to see an example Heritage certificate for a CKD car, PM me, and I'll forward you a copy of the one saffrontr sent to me.
 
TheSearcherMan said:
I was able to get a NOS block, and they are not stamped. So, I guess the number do match, right?
Click to expand...
As almost any Corvette restorer can tell you, it's not that hard to change the numbers anyway.
 
2wrench said:
Do not know what to do with the interrupter
switches.
Click to expand...
Easiest, IMO, would be to find a top cover casting that is already drilled & tapped for them. For a J-type there is only one switch, the 2nd switch is to enable operation in 2nd gear for the A-type. But if you can't source a casting that is already drilled & tapped, you'll have to drill & tap your own. Not hard at all, but you'll need to strip at least the 3/4 shift shaft out (I'd do all of them) and find a copy of that oddball metric tap.
 
2wrench said:
...Do not know what to do with the interrupter switches [snip] I might have been inclined
to store my original tranny; buy and install the
new, at the kinds of money you mention...
Click to expand...

Photo of those switches (though you would only be using on for 3/4):

OD-Cover.JPG


As for the UK source cited, I think that was for just the OD unit -- i.e. you would still need to open/rebuild your 'box with the longer mainshaft.
 
Okay, so basically what we've ordered, then. Makes
me feel a wee bit better.

Also, I do have J drive and anticipate using only the 3/4
switches. Thanks for the picture, becuase these switches could well have been craters on the moon; frankly, now it's
clear...and as such....less scarey.

By the way, I cleaned my tranny and it looks so shinny.
I suppose it is best not to topcoat the thing with any kind of a paint such as POR or something like that for
breathability or what?

Mine was coated terribly with oil and grease.
 
Geo Hahn said:
you would still need to open/rebuild your 'box with the longer mainshaft.
Click to expand...

It may be my bad memory but I seem to recall the O/D main shaft was the shorter one and the regular non-O/D shaft was the longer one. Some one tell me if I have to reprogram my brains memory chip please.
 
Adrio said:
It may be my bad memory but I seem to recall the O/D main shaft was the shorter one and the regular non-O/D shaft was the longer one. Some one tell me if I have to reprogram my brains memory chip please.
Click to expand...
Nope, you've got it right. I'm sure Geo knows that ...
 
I sit and chuckle in the evenings and my wife can't
figure why.

I showed her this bit of humor and now she
understands. Sometimes you guys just kill me.

A brain....need I say it? I don't think so.

Actually, I'm waiting for Greg to come in here and
tell us about the unit(s) he/we bought.

Come on, Greg. Get it outta the box.
 
I sit and chuckle in the evenings and my wife can't
figure why.

I showed her this bit of humor and now she
understands. Sometimes you guys just kill me.

A brain....need I say it? I don't think so.

Actually, I'm waiting for Greg to come in here and
tell us about the unit(s) he/we bought.

Come on, Greg. Get it outta the box.
 
OK, I just logged in, I did take it out of the box today, everything is clean, got the mainshaft, O/D Unit, Soleniod, Gearswitch, some gaskets/

It is clean, it spins fine when I put the shaft in, at this point that is about all I can report.

I have not had this newer type O/D apart before, the older ones I am familiar with have a bunch of springs between the O/D and the box, don't see any on this one, are they missing or are they not supposed to be there?
 
Hi, Glen. Can't answer your question, because I don't
know.
You say got the gearswitch. Is this the part that
will attach somewhere within the car's cab, like
the steering column or something to turn that baby
off and on, or is it another part?
 
glemon said:
I have not had this newer type O/D apart before, the older ones I am familiar with have a bunch of springs between the O/D and the box, don't see any on this one, are they missing or are they not supposed to be there?
Click to expand...
Springs on a J-type are way inside the unit, not between the unit & the adapter plate like on the A-type.
 
Thanks Randall, by Gearswitch I mean the switch that only allows the O/D to be engaged in 3rd and 4th, it screws onto the tranny or tranny linkage, I forget which.

Greg
 
glemon said:
by Gearswitch I mean the switch that only allows the O/D to be engaged in 3rd and 4th, it screws onto the tranny or tranny linkage, I forget which.
Click to expand...
Goes into the top cover of the tranny, where it's plunger rides on the top of the 3/4 shift fork. Geo posted an excellent photo earlier in this thread, so page back and have a look.
 
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