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Martyn

2.97:1 1st gear wanted

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Hi all,

restoring a Lotus Elan +2 managed to source a Twin cam and a 3 rail box from a Ford Anglia. To keep things right I need to change the 1st gear ratio from 3.55 : 1 to 2.97:1. 

I am told that a 3 rail 2000e box has this ratio. If anyone can help it would be greatly appreciated.

thanks Martyn.

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8 hours ago, Martyn said:

Hi all,

restoring a Lotus Elan +2 managed to source a Twin cam and a 3 rail box from a Ford Anglia. To keep things right I need to change the 1st gear ratio from 3.55 : 1 to 2.97:1. 

I am told that a 3 rail 2000e box has this ratio. If anyone can help it would be greatly appreciated.

thanks Martyn.

Watching👍

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the 2000e box counter shaft has a different amount of teeth than on the mk1 shaft. first is 17[same as stock mk1]then second is 22,third is 26 and fourth is 30.

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On 9/2/2019 at 9:51 AM, Martyn said:

Hi all,

restoring a Lotus Elan +2 managed to source a Twin cam and a 3 rail box from a Ford Anglia. To keep things right I need to change the 1st gear ratio from 3.55 : 1 to 2.97:1. 

I am told that a 3 rail 2000e box has this ratio. If anyone can help it would be greatly appreciated.

thanks Martyn.

1st, 2nd & 3rd gear ratios are completely different but 4th is the same as it is a direct gear. However, to change a 3.5 box to a 2.97 box you need an input shaft, 3rd mainshaft gear plus the 2nd motion / laygear that sits in the bottom of the box from a 2.97:1 gearbox. You may need other parts also depending on a few things. Only the 1st and 2nd physical gears on the mainshaft are the same between the two boxes.

The ratios are not the same across the two boxes (3.5 and 2.97) as the the ratios (even 1st and 2nd) are made up of a combination of two sets of gears to make each ratio for each gear, except for 4th due to being direct. 

Finding the gears you need on their own would probably be harder than just buying a 2000e gearbox. 

 

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Have a word with BGH geartech, he may be able to help although they mainly deal in type 9s

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