Non Standard Spec?

[Alan Lukes]

Just a quick one for some opinions out there.

Non standard gear box on a TR6, 5 gear box from a Toyota. does it add to appeal or detract? more attractive or less?

No overdrive issues to worry about I would say is a bonus. I know the purists will probably hate it but I'm just interested.

Thanks\

Alan.

[AndyR100]

Sticklers for originality will run a mile, but, in my view, it is a desirable mod - if you were in the US it is quite sought-after and referred to as the HVDA conversion, named after Herman van den Akker who came up with it.

... Andy

[John Morrison]

Fixing something that ain't broke in my opinion I'm afarid.

Sure it works well, and who knows why, but it would cost more than sorting an original Tr6 plus overdrive, 

to end up with two less gears?

hey ho, 

John.

[PodOne]

Driven a lot of cars with OEM, modified and full replacements from other marks of car and it works for some cars but I'd say a working TR6 box with OD is well suited to the car so personally see no reason to fit something else. So save your money and spend it on petrol and a wheel alignment.

Andy

[TR NIALL]

Wouldn’t be my choice,a good TR Box with proper functioning Overdrive is pure delight.

[North London Mike]

7 speed for me (4+O/D) better than a radio. However, I do love a modified car so ok with the 5speed, just not my choice 

[had17462]

I had another make of car but one with each and for me if travelling long distance’s/ motorway  the 5 spd much better but boring really  but if country lanes a roads etc the overdrive every time ,great fun keeps you busy ,hearing the engine revving etc superb, don’t have them anymore but building another tr obviously with overdrive  .

Nick

[harlequin]

Why not just go the whole way and get a Toyota? It will have a 5 speed box, reliable injection system, air bags, modern brakes and lots more!

George 

[ianc]

As far as I am aware, the 6-pot TRs had overdrive on 3rd and 4th only - unlike the earlier 4-pots which had it also on 2nd (except very early TR2s).

Ian Cornish

[Chris Hale]

The early 6s had overdrive on 2nd, 3rd and 4th

[harrytr5]

17 hours ago, Chris Hale said:

The early 6s had overdrive on 2nd, 3rd and 4th

I concur Chris my TR5 has it as did my April 69 TR6.

Regards Harry

[rcreweread]

All TRs with an A type overdrive, apart from the earliest cars, had overdrive on 2nd, 3rd and 4th ( these had a 22% reduction ratio in the OD). TR6s with a J type overdrive only had it on 3rd and 4th as they left the factory ( these had a 25% reduction ratio) but it is quite easy to modify the gear selector remote control to take an extra inhibitor switch  so that overdrive can also operate on 2nd -  - any of the gearbox/overdrive specialists will be able to do this mod.

Some people will say the OD can't take the extra torque in 2nd from a 6 cylinder engine but there are plenty of much more powerful cars with J type ODs which quite happily cope with the extra power - you don't have to use full power/torque if you have this mod if you are worried about it, but it is very useful addition in urban driving.

I always thought A type ODs ceased to be used on TR6s when they went from the CP series to the CR series, when the J types were introduced but I stand to be corrected

Just my thoughts

Cheers Rich C-R

[Andy Moltu]

18 hours ago, ianc said:

As far as I am aware, the 6-pot TRs had overdrive on 3rd and 4th only - unlike the earlier 4-pots which had it also on 2nd (except very early TR2s).

Ian Cornish

The CP TR6s had the A-type overdrive working on 2nd, 3rd & 4th gears.
The CR was fitted with a J-type working on 3rd & 4th. The chassis were modified and bobbin mounts used to mount the O/D unlike the early 6s which had the same mounts as the 4A-6.

Why was it changed from 2,3,4 to 3&4 is often attributed to the torque in 2nd but there is no definitive answer. Could it be the J type can't cope with the torque? They have proven pretty bomb proof compared to the A type and many have adapted the covers to run on 2nd gear.