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Eclat Diff ratio
Posted 16 April 2012 - 06:23 PM
Posted 17 April 2012 - 05:48 AM
The diff itself is a salisbury 7HA, which wasn't fitted to very many cars. The Morgan +8 used a full width version with a 3.53:1 ratio, which was shared with the one of the Scimitars (SE4b?) and the first 50 SE5A's, but given the Morgan guys can't find them nowdays as replacements for broken ones, you'd have more chance of finding diamonds in your back garden.
If you already have a 3.73 diff, you might want to look at your gearbox, but given yours is a special one, you might not be that keen on replacing the ZF. Do you know which box it is and if it is overdriven? The Getrag 265 produces a 0.82 overdrive on top, which is probably about right for the diff ratios.
It is possible (but expensive) to have a CW&P made with higher gearing, which is the route I am going down with a Morgan race team and salisbury specialist, but the batch is for 3.1:1 which I think is too long for the 4 cylinder cars. Given the difference between a 4.1 and a 3.73, I doubt you would like the end result with a 3.1:1 as the 4cylinder wasn't really blessed with torque.
I have to phone the guy and enquire as to how mine is progressing (it's been "almost there" for about 6 mnths) and I'll ask him which ratios he has made (I think he had others made for the track morgans) but I'm not sure.
You might want to determine what the top gear of your gearbox is and examine box options if you already have a 3.73:1 - it would be easier and cheaper.
Posted 19 April 2012 - 06:56 PM
Thanks for the help
Posted 20 April 2012 - 03:28 PM
Posted 21 April 2012 - 08:02 PM
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