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Volvo Diff Decisions
http://forum.diyefi.org/viewtopic.php?f=15&t=2789
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Author:  Fred [ Wed Aug 23, 2017 12:18 pm ]
Post subject:  Re: Volvo Diff Decisions

Stood up so the milky CRC/water mix can drain and dry out, covered most holes: https://twitter.com/FredCookeNZ/status/ ... 1724892162

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Author:  Fred [ Wed Aug 23, 2017 12:22 pm ]
Post subject:  Re: Volvo Diff Decisions

Next up:

1) Debur and weld plates over holes in housing, leak test with petrol or meths or something thin
2) Debur and derust the free-wheeling spool
3) Clean more muck from rear cover and/or housing - had a good crack tonight, but more to go
4) Paint any bare or rusty steel with black zinc of some sort
5) Reassemble with RTV for back cover
6) Reassemble the brakes

Then I can pull the G80 axle from the caravan and install this contraption! :-D

After which the G80 can go into the 740 sedan and spin some sweet donuts :-)

Can't wait!

Author:  Fred [ Sun Aug 27, 2017 9:34 am ]
Post subject:  Re: Volvo Diff Decisions

Waterblasted the rear cover and entire housing, inside and out, re CRCed the insides and machined faces.

Thought the cover hadn't come up too well, until I checked out the before photo just now, so I went and shot a couple of afters: https://twitter.com/FredCookeNZ/status/ ... 8810004481

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Author:  Fred [ Thu Aug 31, 2017 10:56 am ]
Post subject:  Re: Volvo Diff Decisions

Nearly there! Just welding on of the cover plates, and cutting out of those plates, a bit of cleaning, a lick of paint, and reassembly!

Tonight was deburring, derusting, recleaning, and reoiling. Now living inside instead of precariously out the back: https://twitter.com/FredCookeNZ/status/ ... 1368571904

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Author:  Fred [ Wed Sep 27, 2017 9:45 am ]
Post subject:  Re: Volvo Diff Decisions

Cut out the blocking plates from the beaten up mangled old Toyota windage tray tonight:

https://twitter.com/FredCookeNZ/status/ ... 2644531200
https://twitter.com/FredCookeNZ/status/ ... 0290573313
https://twitter.com/FredCookeNZ/status/ ... 2806602752

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Author:  Fred [ Mon Jan 08, 2018 1:55 pm ]
Post subject:  Re: Volvo Diff Decisions

A bit more work on the indifferent differential this evening:

https://twitter.com/FredCookeNZ/status/ ... 3891237889
https://twitter.com/FredCookeNZ/status/ ... 9382011904
https://twitter.com/FredCookeNZ/status/ ... 1316280321
https://twitter.com/FredCookeNZ/status/ ... 8557428736
https://twitter.com/FredCookeNZ/status/ ... 7239798784
https://twitter.com/FredCookeNZ/status/ ... 8809325569
https://twitter.com/FredCookeNZ/status/ ... 1272505344
https://twitter.com/FredCookeNZ/status/ ... 9670445056
https://twitter.com/FredCookeNZ/status/ ... 6680914944
https://twitter.com/FredCookeNZ/status/ ... 0220238848
https://twitter.com/FredCookeNZ/status/ ... 0900079616

TODO: most pics, one for now, plates welded on, ground back, leak tested, primed:

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Next up, likely tomorrow, reassembly! :-D

Via cleaning the rear cover... damn.

Author:  Fred [ Wed Jan 10, 2018 2:08 am ]
Post subject:  Re: Volvo Diff Decisions

Pics from previous post:

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More soon! :-)

Author:  ToxicGumbo [ Fri Jan 12, 2018 5:38 pm ]
Post subject:  Re: Volvo Diff Decisions

This is tremendous work, Fred. It's precisely this sort of performance improvement that I don't see anywhere else and have a great appreciation for.

Author:  Fred [ Sat Jan 13, 2018 11:45 am ]
Post subject:  Re: Volvo Diff Decisions

Is that a veiled way of saying it's a complete waste of time? If not, it likely should be, but I don't mind. The "gainz" are real, even if they don't really matter much. It's mostly about the weight, but also about lower friction.

More done last night, none tonight, last night's work:

https://twitter.com/FredCookeNZ/status/ ... 5590524928
https://twitter.com/FredCookeNZ/status/ ... 1325764608

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Author:  Fred [ Mon Jan 15, 2018 4:58 am ]
Post subject:  Re: Volvo Diff Decisions

A little progress, in fact, it's basically ready to install minus light-weight gear oil, disks/drums, and unable-to-be-used calipers:

https://twitter.com/FredCookeNZ/status/ ... 0184071169
https://twitter.com/FredCookeNZ/status/ ... 7252019201
https://twitter.com/FredCookeNZ/status/ ... 1136986112

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