There's definitely a difference in axle shaft offset between EJ/EH/HD/HR and LC/LJ. It'll be the same as the difference in front hub offset between EJ-HR and five-stud Toranas. I'm guessing it's of the order of 1/2".
Drum-braked six-cylinder LC/J had the same drums front and rear. There's quite a pronounced "step-up" in the flange where the hub seats.
Rob
HR Rear Backing plates - there is a difference
Re: HR Rear Backing plates - there is a difference
Seems apparent at this point my brakes are not the wider commercial brakes as fg ed vrndor yold me, or the EJ EH sedan brakes. They must be straight LC LJ brakes.
FB ute driver, EK van project
FB ute driver, EK van project
getting my FB ute on the road
EK van on rotisserie
EK van on rotisserie
Re: HR Rear Backing plates - there is a difference
Interesting. Measured 7mm step Rob, but as you say the difference will probably be 12.7 mm. This could be just what I need to solve my wheel offset issue. Possibly I could fit longer studs and spacers behind eh drums where plod won’t see them on the Torana axles.
FB ute fixer upper, EK van on rotisserie
FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
EK van on rotisserie
Re: HR Rear Backing plates - there is a difference
Except that EH drums won't go properly onto a Torana rear axle - you'll see a wide gap between the drum and the backing plate, with lots of exposed lining.
I've just looked back at your photos. I think the drum in your first photo (inch rule) is HR. In EH drums, the outside of the drum is at about the same height as the flange (second photo, millimetres). And in Torana drums, the centre flange sits waaay proud of the rest of the drum.
Dumb question coming up: Is your rear axle really Torana, and not EH? To adapt a Torana rear axle to early Holden, you need to cut all of the four-link paraphenalia off (leaving visible scars top and bottom), and attach good old rear leaf saddles and model-appropriate bump stops. And put the brake pipe bracket in the correct location. But you have to do that with EH rear axle too.
So I'm confused.
Rob
I've just looked back at your photos. I think the drum in your first photo (inch rule) is HR. In EH drums, the outside of the drum is at about the same height as the flange (second photo, millimetres). And in Torana drums, the centre flange sits waaay proud of the rest of the drum.
Dumb question coming up: Is your rear axle really Torana, and not EH? To adapt a Torana rear axle to early Holden, you need to cut all of the four-link paraphenalia off (leaving visible scars top and bottom), and attach good old rear leaf saddles and model-appropriate bump stops. And put the brake pipe bracket in the correct location. But you have to do that with EH rear axle too.
So I'm confused.
Rob
Re: HR Rear Backing plates - there is a difference
(Clay: Further comments will be posted on your ute thread.)
Re: HR Rear Backing plates - there is a difference
Yes definitely LC LJ and much narrower. The brakes then are probably HD HR. The offset is opposite to Torana, relative to EH.
FB ute fixer upper, EK van on rotisserie
FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
EK van on rotisserie
Re: HR Rear Backing plates - there is a difference
Here is a photo of Torana drum from gumtree
Ever tried fitting FE EH wheels to these drums? I wonder if the Torana front discs would take the EH centres, or still foul calipers like HR.
FB ute fixer upper, EK van on rotisserie
Ever tried fitting FE EH wheels to these drums? I wonder if the Torana front discs would take the EH centres, or still foul calipers like HR.
FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
EK van on rotisserie
Re: HR Rear Backing plates - there is a difference
Clay,
FE-EH wheels will go on LC-J front drums. They won't quite manage LC-J front discs, but I have a memory of EH wheels going on LH front discs and calipers OK.
(And it's been so long since I last worked on a Torana that I can't remember if front and rear drums are the same.)
Rob
FE-EH wheels will go on LC-J front drums. They won't quite manage LC-J front discs, but I have a memory of EH wheels going on LH front discs and calipers OK.
(And it's been so long since I last worked on a Torana that I can't remember if front and rear drums are the same.)
Rob
Re: HR Rear Backing plates - there is a difference
Thanks Rob
FB ute fixer upper, EK van on rotisserie
FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
EK van on rotisserie