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MX5 box shifter move

PostPosted: Thu Aug 05, 2021 7:31 am
by h20hamelan
Looks like its close
Anyone know if this would fit our cars?
I am hoping to collect one and see

http://the-mite.com/mite18.htm

04C9D66E-5AA3-4D02-B3CE-1197ABB1D72C.jpeg and

Re: MX5 box shifter move

PostPosted: Thu Aug 05, 2021 3:37 pm
by Frogelan
A very interesting suggestion.

I have had a quick look at the website and this seems an "easy way" to modify the gearbox by simply shortening the selector by 103.5mm.

Is this far enough?

It certainly looks an interesting avenue to work on and as a slight improvement, some sort of nylon block could be machined up to be bolted /shimmed between the underside of the "tower" and the top of the gearbox tail to take away any unnecessary strain / movement on the linkage.

Re: MX5 box shifter move

PostPosted: Thu Aug 05, 2021 4:08 pm
by bitsobrits
The MX5 gearbox has an integral bell housing and the overall unit is quite long, so first order of business would be getting it mated up to the Twin Cam and fitting the chassis. And the starter location would be an issue as it's right where the exhaust wants to be.

Unless you are thinking about installing the entire MX5 engine/gearbox, which is an entirely different discussion.

Re: MX5 box shifter move

PostPosted: Thu Aug 05, 2021 4:50 pm
by Frogelan
Steve

The NA/NB gearboxes do have indeed have this technical hitch...which dampens enthusiasm unless a Mazda Duratec engine is used!

Caterham Parts sell a the gearbox without the integrated bellhousing but of course the selector tower is different.
https://caterhamparts.co.uk/gearboxes/6 ... ation.html.

I will do some more research.

Re: MX5 box shifter move

PostPosted: Thu Aug 05, 2021 7:22 pm
by h20hamelan
yes
Duratecs for the lot of y'all
and I

As there are off the shelf triggers and standalone computers these days $400 for the Duratec.
I had planned on collecting a box and lump tomorrow!

Making mods to the frame to accept the lump should be the only big issue anyone may have, and the mounts

Re: MX5 box shifter move

PostPosted: Thu Aug 05, 2021 7:30 pm
by h20hamelan
note on MX5 Duratec 2.3 2.5 which puts it too high and low in the engine bay.

I plan on the Focus engine $150 and a shorter block 2.0l and changing the valve cover and sump pan to MX5

Re: MX5 box shifter move

PostPosted: Thu Aug 05, 2021 9:36 pm
by h20hamelan
The issue I am having with it, is it is only in the NA 90-97 MX5
There really are not great gear options for it, though it would be fine in the +2 I believe.
The T5 Tremec still makes the most sense, better ratios and availability. So back at the RWDMOTORSPORTS.COM $400 option.

There is a good chance when I am in the big city next, I will collect a box and give it a shot. If anyone has the chance or knows someone who has attempted a NA 90-97 box fitting could please post comments.

Moreā€¦
The early trans is not for a Duratec, ah well!