Technical Help identifying rotor

Hello,
I'm posting this for my 82 year old father. Around 30 years ago, he started building a 30 Model A coupe and used some front rotors that he now can't remember what car they were taken off of. They are two piece, 11" diam., .350 in. thick, 5 lug with 4.5 spacing on 37' - 41' spindles. I believe at the time, they were a popular swap, but not sure..... Here's some pics.

Thank you in advance!

 

Possibly 70's era Jaguar, were a pretty popular swap

 

Well, this sure as hell won't help....but judging by the size of that rotor,miniscule thickness........ it has to be from a small car of sorts....Mustang II.....1975-78....Volvo small rotor...circa 1960's......Jag ????????? Could be something different then those selections....but from 30 years ago...without the aftermarket kits....that was pretty much what you worked with. Do you have an impact gun, and some penetrating oil?? Bust that hat off and see if there are numbers under. ***uming no casting marks visible or you would have listed them.......also what is the overall diameter? 10"? 11"?

 

kidcampbell71, he said this: "They are two piece, 11" diam., .350 in. thick, 5 lug with 4.5 spacing on 37' - 41' spindles."

 

Missed the 11" part, but aren't all of those still 5 on 4.5"? Or am I left fielding it here? Those are the only disc discussions that I remember from the 80's so other then that.....play ball !!!

As well.....my opening comment was " Well, this sure as hell won't help"......lol.....called on the account of rain. Replay to be scheduled.

 

If they use stock 37-41 Ford bearings, they could well be Volvo.

 

Volvo might be it. I missed the bolt circle measurement above. They were a very common swap too.

 

Looking like a Volvo hub/rotor to me.

 

Shoot a pic to the tech guys at SSBC. They might know what it is from.

 

Yeah, looks like late 60s/early 70s Volvo. Early disc swap with a couple of magazine feature 'how-tos', only minor machine work/fab needed...

 

Find the huge brake swap article in the tech archives; it is from the right period and covers all the early swaps like VW, Volvo, Jag, etc.
You may well find a good picture of what you have therein.

 

Dang! Do we HAVE the tech archive anymore??

 

I'm thinking Volvo's had a small bolt pattern, like 5 x 4".... at least the 1976 that I had did. they did not bolt together like that either, rotors just slid over the hub like regular cars. maybe early ones were different.

 

The early one were non-vented, two-piece, and had a 5-on-114.3mm bolt circle, which happens to be 4-1/2".