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Author: Subject: MX5 5sp 6am gearbox ratios
snapper

posted on 18/12/10 at 09:10 AM Reply With Quote
MX5 5sp 6am gearbox ratios

I am building up information for a Duratec install and came across the Mazda 5 and 6 speed rear drive boxes.
I like the idea of a 6 speed but understand Caterham use the 5 speed with the Duratec, there must be a good reason for this, so what are the ratios for both boxes?





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Chippy

posted on 18/12/10 at 02:58 PM Reply With Quote
Seem to recall, (IMS), an article on these boxes that stated that the six speed was not worth the extra dosh as the fifth and sixth gears respecively were the same ratio, or as near as dammit. Cheers Ray





To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy

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martylemoo

posted on 18/12/10 at 03:43 PM Reply With Quote
6 speed boxes are considerably stronger, but are also in very short supply.
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BigLee

posted on 18/12/10 at 05:23 PM Reply With Quote
Do they not use completely different Diffs too? I'm sure I read something that suggested if you put a 6 speed where a 5 speed once sat, 6th gear would be the equivalent of 4 1/2 without changing the diff. Check your old PPC magazines, they had MX5's a few months ago. I'm sure that's where I read it.
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