[TR] Experience with Vitesse 5-speed transmission conversion?

Frank Fisher yellowtr3 at yahoo.com
Thu Jan 2 17:06:18 MST 2020

 well they do include the driveshaft. a proper drive shaft.looks like it uses the hydraulic throw out bearing. i have never liked the idea of that. when i built my own i used the original triumph slave cylinder. heck of a lot easier to replace.and the gear lever looks funky. when i did mine i cut the top off the toyota lever and welded the top from a ebay bought triumph lever. weld hides under the rubber boot. cant tell the difference.
just my thoughts

    On Thursday, January 2, 2020, 03:46:23 PM PST, Anthony Rhodes <spamiam at comcast.net> wrote:  
 Hmmm. 3K rpm at 60 MPH is about what my 4th gear is on my non-OD tranny.    I would have thought that the Miata 5th gear might have been “direct”, like the TR’s 4th. And 6th would be some sort of overdrive. 
Without having 20-30% overdrive then there is no great advantage to the Miata unit!

Sent from my 1837 Babbage Analytical Engine

On Jan 2, 2020, at 2:40 PM, Bryan Loy <paradisemusicnc at gmail.com> wrote:

As far as gear ratios go, I can't say, numbers wise, but I have an '04 MX5 with the 6 speed, and it is low.  6th gear at 60mph, the engine is turning 3K.   Pretty much 20MPH for every 1K on the tach. Bryan
On Thu, Jan 2, 2020 at 2:27 PM Anthony Rhodes <spamiam at comcast.net> wrote:

It is indeed pricey.  But it appears to be a complete new transmission and all the required adapter stuff ready to go.  The only way it would be better as a conversion is if it retained the original space cylinder. 

So for a complete new modern (hopefully long life) overdrive transmission, the price is not terrible.

It is likely a better solution than the HVDA because those old Toyota transmissions may well be “used up”,not just “used”. And they are hard to find.  

For me, I found the right Toyota transmission to be as rare as ... as a friend of mine puts it...   as rare as rocking horse manure.   He may not actually have used the word “manure”. 

So I like this Miata option!

Does anyone know the gear ratios?  The Moss description does not indicate the ratios.  


Sent from my 1837 Babbage Analytical Engine

> On Jan 2, 2020, at 2:02 PM, triumphs-request at autox.team.net wrote:
> Message: 1
> Date: Wed, 1 Jan 2020 13:54:49 -0600
> From: Dean Mericas <dmericas at gmail.com>
> To: triumphs at autox.team.net
> Subject: [TR] Experience with Vitesse 5-speed transmission conversion?
> Message-ID: <3D51629D-3D80-44B6-9EEF-01C3BD216362 at gmail.com>
> Content-Type: text/plain;    charset=utf-8
> I see that Moss now carries an a 5-speed transmission conversion that appears to use Miata internals in a custom case and bell housing. It isn?t cheap, but as an apparent drop in replacement I think the installed cost may be about the same as the Toyota-based HVDA kit.
> Does anyone on the list have first hand experience with this particular conversion?
> Thanks. 
> Dean Mericas
> 1965 TR4
> Austin, TX

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