Volvo Diff Decisions

Non-EMS Automotive related discussions and projects in here please.
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

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

Image

Image

Image

Image
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

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!
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

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

Image

Image

Image
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

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

Image

Image

Image

Image
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

Pics from previous post:

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image






More soon! :-)
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
ToxicGumbo
LQFP144 - On Top Of The Game
Posts: 470
Joined: Tue Jan 03, 2012 8:37 pm
Location: Manhattan, KS. USA

Re: Volvo Diff Decisions

Post by ToxicGumbo »

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.
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

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

Image

Image
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
Fred
Moderator
Posts: 15414
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Volvo Diff Decisions

Post by Fred »

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

Image

Image

Image
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
Post Reply