Unusual gearbox identification
Following previous thread with the car jumping out of reverse necessitating a gear box strip down and subsequent damage found to reverse/1st and layshaft...I;ve got stuck... Need some help identifying...
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Dan, got a couple of pics of the outside of the trans case?
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photos from 2013 rebuild when it was eyeballed, looked good and naively thought to be a 1275 box....
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The engine also had a camshaft that I've never been able to identify in it. Similar profile to a 649 but with BIGGER lift. unmarked. and later fuel pump set up. Was ridiculously cammy and so a...
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Looking at the gearbox and thinking back on the early rib-cases I've been into, I'm thinking you have a very early Sprite Mk III or a Morris Minor box from the same period. They shared a common main...
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Try calling John Esposito at www.quantumechanics.com He's very knowledgeable about British gearboxes... Dick
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Thank you, Mike, for your thoughtful an thorough reply... (tu) Dick In reply to # 3639188 by Spridget64SC Looking at the gearbox and thinking back on the early rib-cases I've been into, I'm thinking...
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Dick - Thanks Daniel; Thought of one other thing of which some gearbox re-builders may not be aware. There are two tooth patterns used on the straight cut gear teeth in gearboxes. Vizard noted this in...
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You guys have already covered it but here is a list of the various part numbers: http://www.gerardsgarage.com/Garage/Tech/TransPartsIndex.htm BillM
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In reply to # 3639188 by Spridget64SC Reverse should have a 22A453 on the backside of the larger row of teeth. The 1/2/R big slide gear should be a 22A460 and the 3/4 slider should be 22G95. Now to...
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In reply to # 3639212 by Spridget64SC Dick - Thanks Daniel; Thought of one other thing of which some gearbox re-builders may not be aware. There are two tooth patterns used on the straight cut gear...
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Further reading and some direction elsewhere has shown me the way I was told to calculate the gear ratios is obviously incorrect and Ill try and clarify them, Don't forget to incorporate the gear...
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recalculating using: http://www.calverst.com/technical-info/gearbox-formulae-for-fd-tyre-size-car-speed-and-gear-ratio-calculation/ gives 1st 3.62 2nd 2.17 3rd 1.1411 which would be a minor 1098 box....
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For those who may be following this thread, gear ratio = number of teeth on driven gear divided by the number of teeth on the driving gear. An example would be an MGB differential, which has 41 teeth...
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Got to have the mainshaft and laygear shaft removed (Move the laygear to the side) to get reverse out. Remove the reverse idler gear shaft set screw from the bottom outside of the case. Turn the case...
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After a bit of research and review of your pictures, what I think you might have is a early balk ring/synchro box that has had the 1/2/R slide gear, input shaft and laygear replaced with late model...
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Wow... (tu) Dick In reply to # 3640053 by Spridget64SC After a bit of research and review of your pictures, what I think you might have is a early balk ring/synchro box that has had the 1/2/R slide...
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Thank you ever so much, I'll try and get the gears apart and see if any stamps. Gonna need an impact driver to undo the reverse sett screw unfortunately, think might have been loctited in last time I...
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