to articles on the Vitesse gearbox |
News of the availability of
the Vitesse Mazda gearbox as a replacement for the MGBGTV8 was seen in early 2017.
An article with information was released promptly. Clearly the high torque characteristics
of the MGBGTV8 and the in service experience with the replacement Vitesse gearbox
is a natural concern. Christian Disney at Vitesse provided comparative data for
a number of the cars using the Mazda gearbox. Then fellow V8 member Ashley Vane
produced an article setting out his expereince with a replacement Vitesse gearbox
fitted to his MGBGTV8 in November 2016.
Back to entry webpage
formation on the replacement Vitesse gearbox on the V8 Website |
Gears without fears
East Anglian V8 Burbler, Ashley Vane, says you've
no doubt seen all the advertising and articles in various MG magazines recently
about the Mazda 5speed gearbox conversion, well from some one who has made the
"change" I can thoroughly recommend it as money well spent.170202
gearbox in other classic cars
Disney, Business Development Manager at Vitesse, provided some information from
the other applications of their replacement Mazda MX-5 gearbox saying "BBR
produce factory endorsed, warrantied turbo upgrades for the MX-5, producing
302 bhp @ 7350 rpm, and 254 lb.ft of torque available @ 4950 rpm. This conversion
demands an uprated clutch, but the standard transmission is still used with no
issue. We supply Caterham with their 5 speed gearboxes and they use it in their
620s (supercharged 2.0L Ford Duratec producing 310bhp, 219lb.ft) with no issue.
They have done thousands of miles of road and track testing. It's a lighter car
but with 215-section ZZR rear tyres it will have significantly more traction than
an MGB with 185-section road-biased tyres, meaning the powertrain will be stressed
more in that application despite the lower torque figure.
Motor Company take our gearbox
for their 4/4, Plus4 and Three Wheeler models. The 2.0L V-twin in the Three Wheeler
delivers torque in one big lump that stresses all components, but we have had
no issue with the gearbox! Our own development car, a 4.0L V8, has covered a few
thousand (mainly spirited) miles and we have not had a single problem with the
gearbox. Safe to say, we are very confident that the Mazda gearbox is a great
unit that is more than strong enough for the V8 MGB."
torque data has been used to create a table which shows the comparison
more easily. Torque
Replacement 5 speed Mazda gearbox
now available for an MGBGTV8
is the Vitesse Mazda based replacement 5 speed gearbox kit like, how do the ratios
compare with those of the original 4 speed box with overdrive on top gear, how
does it perform, what does the installation involve and how much does it cost?
Our article has the news. 170116 More