Little Drums?

[andrew]

i mean can you transport the diff home in hal??? :)

[demuire]

No, I'll have to borrow a mate's Daihatsu Mira if I want to take the diff home... :)

 

Else I suppose we could just rip the old drums off Hal and bolt the new ones on at your place (if that works for you), maybe. Or I could just take the drums for now...

 

I'd probably also like the leaf mounts off the diff I think, but not sure if I should leave them on for now so that whoever welds them onto my "new" diff later on would know the pinion angles and what not. I don't know much about that sort of stuff, so don't know...

[Super Jamie]

pinion angles are generally universal across live axles. i have corolla spec ones in a chassis manual at home i can scan for you, email me and remind me. i also recall a small inset article in street machine about this, i'll see what i can dig up

[demuire]

If the pinion angles etc are the same then why do they have to make a jig etc etc when changing the mounts (or so I've been told)? Wouldn't it be just a case of aligning the diff at the correct pinion angle to horizontal, putting the mounts on horizontal and welding them on? Sounds fairly simple to me...

[Super Jamie]

you want them to be exactly the same on each side, hence the need for a jig. no use having one at 5 degrees and one at 7 degrees, etc. the jig is to correct for human error. but what you explained is perfectly acceptable if welding yourself and you get it right, that's how jonny put whatever diff he's using in his "te37"

[demuire]

Jonny has an RA23 or RA40 diff or something like that. I was going to use either a TA22 or R31 diff, although I *may* have found another one apparently with discs and LSD already setup for a leaf spring Corolla (not sure which though)

[Super Jamie]

here's some articles on pinion angle for you:

 

http://www.carcraft.com/howto/91758/

http://www.2quicknovas.com/happypinions.html

http://buickperformance.com/Pinion.htm

http://www.baselinesuspensions.com/info/pinionangle.htm

http://www.drivetrain.com/driveline_angle_problem.html

http://www.4x4wire.com/tech/pinionangle/

 

if you want to play around with the angle for traction purposes, there are angled shims available for popular 4x4 diffs, maybe you could find ones that fit a corolla spring mount. make sure you get billet ones, cast aluminium is bad in suspension components

[andrew]

if you want to swap them at my joint, thats cool. it doesn't have the springs though. but if you really needed them i can get them. i picked the diff up today and it needs a clean-up. and the handbrake cables swapped as they have been cut. we can use the one off the drum i gave you and one i have. if you put new pads and wheel cyls on and clean them up good they will work like charms

[demuire]

Springs? As in leaf springs? No, have spent a small fortune on the set on the car now, would probably like to reuse them :)

 

I can buy new pads and wheel cylinders no problems :S

 

Hmm... Might see if I can come down *maybe* this Saturday if you're around...

[Super Jamie]

are you guys swapping the drums or the whole diff? diff means tailshaft too remember

[demuire]

No, hoping to just swap the drums... I'd like to keep the frontloader (and the 4.3 ratio :)) for now :S

[demuire]

Might be picking up new shoes and wheel cylinders this arvo, $75... $35 for the shoes and $40 for the wheel cylinders... Is that the usual price they go for?

[andrew]

you could get the wheel cyls cheaper but that isn't a bad price.

 

jamie: why would you have to swap the tailshaft? do the jap diffs have a different pinion??

[demuire]

andrew: the jap diff has a different yoke to the BW one. Actually I think I might have a tailshaft to suit a BW. Not that it'd fit in the car :S

 

I ended up getting the lot for $70. $40 for the pair of wheel cylinders, $30 for the shoes. All ready to rock and roll... Yay maybe soon I'll have a working and effective handbrake :)

 

Andrew: Will you be around this Saturday?

[andrew]

yeah i should be home most of the day until 4 o'clock in the arvo