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OD in Spridget.

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The 3.90 gears are pretty easy to find, and should provide a nice lessening of RPMs at reasonable speed (over the stock 4.22). The one I'll be using came from the parts car that also yielded up a 1275 with carbs, ribcase transmission, front suspension (for disc conversion) and 2 rear axles. I wound up paying about $600 for all those bits combined -- and that was out here where prices can be a bit higher (closed market here as we're far from any other city).
 
vagt6 said:
Steffen, thank you for posting that link and welcome to the Forum! Nice source of parts in England.

3.39 ring & pinion is 162.50 pounds = $318.68 US. Shipping would be the clincher, but ring and pinion gears are not terribly heavy.

Nothing is cheap, ay? /bcforum/images/%%GRAEMLIN_URL%%/cry.gif
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The gears themselves don't weigh 10 pounds together. Sounds like you might be talking about shipping for the entire rearend. I'm pretty sure even that does not weight 162 pounds.
 
162.50 refers to British currency = British pounds sterling. The conversion rate today is $1.96.

The website link above has 3.39 ring & pinion for 162.50 Brit pounds sterling = $318.68 USD at today's rate, w/o shipping or VAT.

162 lbs. would make a mighty heavy diff, no doubt!!

/bcforum/images/%%GRAEMLIN_URL%%/lol.gif /bcforum/images/%%GRAEMLIN_URL%%/laugh.gif
 
Ah, you think I would have caught that. Yes 162 quid (what the Brits call the pound) sounds about right. Check Vic Brit at this page. look at item 34
Again though this is just for the gears and expect to pay price to get someone to set them for you when you find someone who can do Mowog diffs right. It is much easier to just keep checking Ebay for a 3.90 or 3.70 whole differential unit, the hogs head, 3rd member, whatever you want t call it. That job is a piece of cake. Remove the axles, unbolt the carrier, swap it out and put back in the axles.
 
Yep, a new 3.70 from Vicky Brit for $299 would be a lot cheaper than shipping the $318 3.39 gears across the pond. And with Vicky, you get a warranty.

Good to know, thanks for posting.
 
They used to sell the 3.55 but I guess they are all gone now. Its where I got mine. The 3.70 was in the later rubber bumper midgets and you can still find the whole carrier in the boneyards if you look or on ebay at times. Did I mention that setting the gears in the carrier is a job /bcforum/images/%%GRAEMLIN_URL%%/wink.gif I have not road tested my midget yet, but when I do and if all works out well, then I will have a set of the 3.90 ring and pinion to sell. Notice how much they get for a whole unit #33. The bearings are cheap for the unit but lots of time in that pinion depth.
 
I've done a number of diff setups. Yes, time consuming, but not difficult to figure out. Service manuals (old ones at least) cover the subject well. A dial indicator helps, and a tube of "prussian blue" for marking the gear teeth.
I'd personally go for the 3.7 from VB if I needed it. I fortunately have a spare 3.7 for my sprite, which I definately will be installing now that I've gotten hold of a 1275. That ratio doesn't work well with the 1100.
 
racingenglishcars said:
I've done a number of diff setups. Yes, time consuming, but not difficult to figure out. Service manuals (old ones at least) cover the subject well. A dial indicator helps, and a tube of "prussian blue" for marking the gear teeth.
I'd personally go for the 3.7 from VB if I needed it. I fortunately have a spare 3.7 for my sprite, which I definately will be installing now that I've gotten hold of a 1275. That ratio doesn't work well with the 1100.
Click to expand...
Yes, that prussian blue tells the real tale at the end.
 
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