RazMan
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| posted on 3/2/07 at 11:49 PM |
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Changing final drive ratio on a transaxle
Numpty Alert 
My car really feels as if it needs another gear - it's a standard 5 speed MTX75 straight out of a Noble M12 but I think its the same as a V6
Mondeo. First gear is practically redundant and I do most of my starts in second so I wondered if is possible to change the final drive ratio without
it costing an arm and three legs?
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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iank
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| posted on 4/2/07 at 12:44 AM |
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You can change the final drive on an MTX-75 from 3.82 to 4.06.
http://www.ekmpowershop.com/ekmps/shops/powertorqueen/index.asp?function=DISPLAYPRODUCT&productid=123
Numpty Alert 2 it's too late and a nice glass or 3 of decent port for me to figure out if this is better or worse (and I often get it the
wrong way round at the best of times)
So lets just leave it at it's possible to change. Depending on the current going rate for arms and legs £175 is around a forearm and 2
knees.
What you could probably really do with is a close ratio gearset, but I suspect you might need to sell a kidney to get those.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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Simon
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| posted on 4/2/07 at 01:08 AM |
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Numpty, correct
The ratios are being changed the wrong way, but if they'll go that way, surely they'll go the other.
However, I suspect that won't be a low enough ratio. I'm planning on going from a 3.92 to 2.88, and even then suspect 1st won't be
much use
ATB
Simon
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DIY Si
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| posted on 4/2/07 at 01:26 AM |
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I doubt there's too many ratio's available for your box. It depends how many of the other boxes have matching R&P sets. Does your box
match any of the other ford gearboxes/diffs? They may be a suitable ratio going elsewhere, something like 3.2-3.6 perhaps?
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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RazMan
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| posted on 4/2/07 at 09:25 AM |
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According to a US tuning goodies shop the European spec is 4.06:1 but I can't think of any way of checking this to make sure I've got this
ratio already fitted.
Also found a Quaife gearset for £1500 
[Edited on 4-2-07 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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iank
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| posted on 4/2/07 at 09:35 AM |
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OK, (glad I added my caveat  )
Haynes comes to the rescue.
What you want is a French V6 Mondeo Final drive which is 3.41. (also fitted to some French 1.8's)
You should also get a gearbox from an 'early' 2.0 which has a higher ratio first and is closer ratio.
The 4.06 was only fitted to non French 1.6's
The whole range of options is bizarre so you'd really need to check first.
[Edited on 4/2/07 by iank]
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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RazMan
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| posted on 4/2/07 at 10:40 AM |
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So it would appear that France isn't included in the European spec? Sacre Blue !
Thanks for the info iank, I will see what I can find in a French theme
[Edited on 4-2-07 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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MkIndy7
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| posted on 4/2/07 at 01:17 PM |
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Don't suppose the FWD Transit (or connect) box would be the same or the ratio's and better?
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