19 replies to this topic

[Aussiesupermini]

I am interested to hear about what 5 speed gearboxes are reliable for hi performance race work.

[phil hill]

KAD or KentAutoDevelopments is about the only purely competition-focused 5 speed I know of still in production.

 

Details here : http://www.kentautodevelopments.com/  then > A-series and classic mini > mini gearbox > KAD 5 speed Dog Gearset

 

Phil.

Edited by phil hill, 24 January 2014 - 06:20 PM.

[rally1380]

And cheap too......

[Cooperman]

Over £3000 for a gear set. Wow, you can buy a complete restored Mini for that .

Still, if it's for motor-sport and the regulations allow it then it might be a good and wise purchase. After all, an FIA spec engine & gearbox for Historic Group 2 racing can easily cost £20,000+ for a competitive Mk.1 Cooper 'S'.

[Almond-1]

Really depends on what circuits you intend to use it on & what discipline. Most people are still using 4 gears.

[Aussiesupermini]

Has anybody have access to a Jack Knight 6speed gearbox. I know JK is not anymore but they did build a good gearbox...

[MIGLIACARS]

a six speed sequential is what is needed

[sixtyeight]

I believe David Rosenthal in South Australia put a 6 speed gear set from a bike into a mini gearbox casing. It was sequential also.

 

might be worth getting onto him if you can, he doesn't frequent any of the Australian forums anymore really (mine or Ausmini)!

[matty...]

I'm currently building a 6 speed sequential box using a Honda gearset.

it's near enough complete now, and im just onto the bench testing stage.

Never again mind...I'm used to tinkering, but rebuilding a box about 40 times to trial fit parts can get frustrating!

[MIGLIACARS]

wow.

 

can i see it 

is there a thread

any photos

 

[email protected]

 

are u putting it into production

 

have u had it in a car

 

standard mini gearbox case???

or auto case

what diff ,, mini????

mini cwp?????

are the gears from the k20

 

what drop gears

 

 

 

very interested pal

[Gr4h4m]

There is a thread by Matty on turbo minis you can see it in all it's glory

[MIGLIACARS]

just reading it now pal

[matty...]

Yeah all on TM, it's been a lonnnggggg project, about 18months longer than I'd hoped! Lol

It'll hopefully be in the car in the next few months, I just need to finish rebuilding the engine and all the other bits I decided to change throughout the rebuild (read as near enough everything).

[MIGLIACARS]

finished reading it now.

 

 

 

 

wow wow wow 

 

i really hope it works. as ill have one

[Aussiesupermini]

Wow that is a lot of dedicated work, good on you, hope you get it all working soon.

 

I cheated and used an Ardon Crossflow and gave it to a very good engineer, and extracted some good horse power, the block is a different thing, the only thing original MINI is the Block....But as you all know once you start spitting out big horse power and huge slicks, the gearbox is a major weak link....hence the Jack Knight Dog Box, it is a work of art, just a Sh...t that they fell over, would love to give it a rebuild other than bearings.

 

Just not convinced the current trend to fit 5 gears in the area of the original 4 set is the way to go.