Ugg10
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| posted on 17/9/15 at 11:01 AM |
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MT82 gearbox
Just looking at options for a rwd gearbox for my 1.7 puma engine to possibly replace the stock Type 9 I have.
So, the obvious choice to fix the 1st gear is the BGH/Quaife/SPC Tracsport/First Motion etc. long 1st or helical close ratio but these are £1k+ (more
like £1.75k for the close ratio).
The next alternative is the RX8 box that is popular at the moment with the classic ford boys but 1st gear is actually even shorter than the type 9
(3.76) and 2nd is pretty long (2.27) therefore ditching the use of first gear and only using 2-6 doe snot really work.
So, I came across the MT82 box (evolution of the MT75) as fitted to the TDCI defender and transit and the ratios look pretty good on this (similar to
the BGH E6 but with a better (longer) 5th) -
1st ...5.44
2nd ...2.84
3rd ...1.72
4th ...1.22
5th ...1.00
6th ...0.79
And not using 1st would still leave a respectable 2nd to pull away with.
Has anyone looked at the size comparison with the Type 9, and whether this gearbox will take higher revs (obviously the TDCi will rev to just under 5k
and my engine may end up revving to 8k). I know it has an integral bell housing so will need an adaptor plate. Any other comments on this box welcome.
Thanks in advance.
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1968 Ford Anglia 105e, 1.7 Zetec SE, Mk2 Escort Workd Cup front end, 5 link rear
Build Blog - http://Anglia1968.weebly.com
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kingster996
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| posted on 17/9/15 at 11:34 AM |
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Is 5.44 a typo on 1st?
Otherwise, as you say the 2-6th ratios look very good - interested in this as I am also looking for something other than the std t9 I have in right
now.
[edit] Crickey does look like a fat fecker though!
[Edited on 17/9/15 by kingster996]
I used to be indecisive, but now I'm not so sure
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Ugg10
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| posted on 17/9/15 at 12:37 PM |
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5.44 is NOT a type - used for going up the north face of the Eiger I think!
You also spotted my potential issue - looks pretty beefy compared to the Type 9/RX8 box and also looks like the gear stick is pretty far forward.
The BMW e46 3 series 6 speed boxes again look interesting and have similar ratios to the Tracsport helical from SPC again disregarding the 1st gear, I
think this is a Getrag box -
(4.35), 2.5 , 1.66, 1.23, 1.00, 0.85 - http://www.bokchoys.com/differential/GearRatios.htm
example - 2011 BMW 3 SERIES E90 330d 6 SPEED MANUAL GEARBOX 23007582711
or if you want a goggle look at the price of the ZF s5-18 close ratio box often badged as a Type 9 replacement :-)
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1968 Ford Anglia 105e, 1.7 Zetec SE, Mk2 Escort Workd Cup front end, 5 link rear
Build Blog - http://Anglia1968.weebly.com
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kingster996
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| posted on 17/9/15 at 02:18 PM |
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quote:
Originally posted by Ugg10
5.44 is NOT a type - used for going up the north face of the Eiger I think!
Holy Sheeeet!
I used to be indecisive, but now I'm not so sure
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Rob Allison
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| posted on 18/9/15 at 01:43 AM |
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RX8 5 speed is better than the 6 speed
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Ugg10
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| posted on 18/9/15 at 08:47 AM |
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quote:
Originally posted by Rob Allison
RX8 5 speed is better than the 6 speed
I think I have to agree but still not a whole lot better than the Type 9 -
RX8 5 and 6 speed
1st 3.483 3.760
2nd 2.015 2.269
3rd 1.484 1.645
4th 1.000 1.187
5th 0.762 1.000
6th – 0.843
Mk1/2 Mx5 5 speed is again not bad but then you have to sort out the clutch etc. whereas the RX8 has the same spline as the Fords.
3.13 1.833 1.303 1.00 .814
https://www.mazdatrix.com/g1.htm
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1968 Ford Anglia 105e, 1.7 Zetec SE, Mk2 Escort Workd Cup front end, 5 link rear
Build Blog - http://Anglia1968.weebly.com
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