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Gearbox differences


John E

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Yep.

 

If you look at the box from above, there is a tube along the top, which runs from the gear stick to the bell housing. On a sport box, this is all one piece, ie welded to the gear box.

 

On a standard escort box, this bit is a bit of pipe, supported at each end, and is not welded.

 

Robert

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The tailcasing on a genuine sport is a one piece alloy casting whereas a standard Escort box had a tailcasing that had a separate steel tube for the selector rod to run in. I beleive that the one piece casting stiffened the assembly therefore made the whole box more robust. One thing to consider is that Ford last fitted this box in a car over 20 years ago and in that time many sports may have been repaired using non sport ratios, nearly caught myself once. One way to ensure it has sport ratios is to remove the lid and count the teeth on the input shaft gear as this differs between a sport and non sport. Sorry but cannot remember the figures, someone out there must know.
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It seems that mine must be a standard Escort type as the tube that holds the selector shaft is not fixed i.e I can rotate it and it certainly seems to be steel. Does this mean that the sport box is alloy and is it a better box. The ratios seem to be ok in that there is no drop off inbetween gear changes. What are the other benefits in having the sport box fitted. Mine is probably in need to an overhaul and so Should I replace it with the sport version and will it fit and where do I get one from.
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John,

 

The sport box is a direct swap. It is stronger, with slightly different ratios.

 

I would recommend giving Steve a ring at SPC 01527 894232. He will give you some good advice, and he can also, supply a sport box.

 

Robert

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Checked last night and the tooth count on a non sport input gear is 17, the tooth count on a sport gear will be either 16 or 18 cannot remember which but I am pretty sure its only 1 different. If you have the right gears don't worry to much about the tailcasing, I ran a quaiffe kit in a standard casing for 5 years doing hillclimbs and sprints with an 1800 x-flow using sticky Hoosiers and slicks and never had a problem. The box was in perfect condition when I sold it on.
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