PSpirine
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| posted on 11/3/12 at 01:28 AM |
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Duratec with MX5 box?
I did some searching but couldn't find a definitive answer.
Will all Z-series Mazda engines and Duratec 4-pots bolt up to a Mazda Mx-5 gearbox? If so, what years of MX5 do I need to be looking at?
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rusty nuts
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| posted on 11/3/12 at 08:33 AM |
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I know that the later MX5s use a box that will fit as they use a Duratec, it may be a 6speed box? As for fitting an earlier box I can't help
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Furyous
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| posted on 11/3/12 at 10:34 AM |
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You'll want a gear box from a Mk3 MX5, late 2006 onwards. The 5 speed code is N7, but I don't know if the 6 speed has a different code.
I'm pretty sure the Mk2 MX5s did not have MZR/Duratec engines.
The gear ratios for the 5 speed as far as I could find are:
1 - 3.71
2 - 2.19
3 - 1.54
4 - 1.18
5 - 1.00
The six speed is the same but with an extra gear. I don't know the ratio off hand.
Apparently the 6 speed is a fair bit bigger and the 5 speed is pretty tight in my Fury's transmission tunnel as it is. I've had to chop a
few mounting brackets off the gear box to make it fit comfortably.
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Poorscousertommy
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| posted on 11/3/12 at 11:04 AM |
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I have the same combo - N7 and Duratec will mate, however I understand that you will need a few of the Mazda mating parts. Don't know the
definitive list but MKIndy7 on here is on his second install and has a thread detailing the install.
Another consideration is that the box causes the engine to lean over by 10deg, so you will need a modified sump.
I believe it's a great combination with a fantastic gear change action, however any bellhousing savings are cancelled by the above..
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