Type 9 or MT75 gearbox

[norton]

Qualify make a close ratio gear set for the mx5 gearboxes. The thought of it reminds me of my old 1.6 205 gti. A great revvy little engine with close ratios was awesome fun and strangely 115bhp seemed plenty in that car.

[PorkChop]

Vitesse were in one of the kit car mags a few months back, I remember hunting them out to see what bellhousing kits they did. As far as I could tell, they only worked with the NC box, which is completely different to the NA/NB.

An NC box certainly isn't as cheap as an NA one either!

[norton]

£50 adaptor to fit a zetec to an rx8 box. You can make an offer on it too.

http://www.ebay.co.uk/ulk/itm/252162235480

This is the cheapest rx8 box with delivery.

http://www.ebay.co.uk/ulk/itm/281843217519

There are others that are cheaper but collection only.

[PorkChop]

But I wasn't talking about the (AFAIK very similar, but not identical to the NC) RX8 box though.

[Mking]

Originally Posted by norton

£50 adaptor to fit a zetec to an rx8 box. You can make an offer on it too.

http://www.ebay.co.uk/ulk/itm/252162235480

This is the cheapest rx8 box with delivery.

http://www.ebay.co.uk/ulk/itm/281843217519


There are others that are cheaper but collection only.

Thanks for that. I see that the adaptor plate is for a 6 speed box and the box is a 5 speed. I had had a trawl of eBay and found several very reasonably priced 5 speed boxes but that 6 speed boxes were about the same price as a type 9. I haven't managed to find out if the 5 and 6 speed boxes are the same so would take the same plate.

Lots to think about. I need to get the chassis started first before buying anything but obviously need to make decisions on running gear which dictate certain parts of the chassis.

[norton]

If converting to an rx8 6 speed costs an extra £100 over a type 9 then surely it's worth the extra?

The type 9, and I've owned a few is very poor and much weaker when compared the Mazda box. The shift is long and notchy and doesn't have the nice short slick feel of a modern gearbox. The type 9 may be a more straightforward fit but not by much.

[PorkChop]

Originally Posted by Mking

Thanks for that. I see that the adaptor plate is for a 6 speed box and the box is a 5 speed. I had had a trawl of eBay and found several very reasonably priced 5 speed boxes but that 6 speed boxes were about the same price as a type 9. I haven't managed to find out if the 5 and 6 speed boxes are the same so would take the same plate.

Lots to think about. I need to get the chassis started first before buying anything but obviously need to make decisions on running gear which dictate certain parts of the chassis.

The 231 6 speed will fit on a 192 Renesis engine; you'll have to look at the clutch/flywheel assembly to see what, if anything, you'll need to change there -http://www.rx8ownersclub.co.uk/forum/viewtopic.php?t=65599

If the RX8 box has anything like the shift quality of the NC MX5 box, then it is well worth it, the NC is a beautiful box to use.

[norton]

Also, all type 9's are very old now with a corresponding amount of wear.