Mazda gearbox - Sigma engine

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Nitrogeno25

Senior Builder

Posts 317
Registered 29/4/03
Location Montevideo, Uruguay
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Building: Duratec - Lotus s3 replica

posted on 8/6/15 at 11:44 PM

Mazda gearbox - Sigma engine

It looks like Caterham is using this combination in the Academy cars. Does anybody know what modifications are required to fit the mazda 5 speed gearbox to the sigma engine?

Many thanks!

Ugg10

Posting Freak

Posts 1540
Registered 7/3/14
Member Is Offline

Building: 1968 Ford Anglia 105e

posted on 9/6/15 at 09:40 AM

Based on the regs section 5.9.3 -

http://uk.caterhamcars.com/sites/default/files/content/uk/documents/2014_caterham_academy_championship_regulations_-_published_copy.pdf

And the info here on mazda gearbox ratios -

http://www.miata.net/garage/KnowYourCar/S8_Gears.html

Looks like a stock mk1/2 5 speed. I'd be interested to see how they fit the box (with integral bell housing) to the sigma (adaptor plate ?) and also what clutch they use as the splines are different to the standard ford one.

Will keep an eye out on this thread for info.

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1968 Ford Anglia 105e, 1.7 Zetec SE, Mk2 Escort Workd Cup front end, 5 link rear
Build Blog - http://Anglia1968.weebly.com

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