Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 04-29-2020, 05:29 PM   #1
oj
Senior Member
 
Join Date: May 2010
Posts: 293
Default '40ish Flywheel question

Uh-oh, a hot rodder is about to ask a question! I need a picture or a description of what the flywheel looks like on a 40ish Ford pickup. My problem is that I have a hemi flywheel and a toploader trans from about early 40's (it doesn't have an arm sticking up for the clutch/TO bearing operator) I machined the hemi flywheel for the Ford 11" pressure plate and when I bolt the clutch assembly down the clutch fully engages, the springs are at coil bind and the fingers point straight out, there is easily 1/2" freeplay in the TO brg.
I am wondering if the Ford flywheel didn't have a recess machined into it nearly the depth of the disc.
Can anybody verify this? have a picture of the flywheel? I looked in the Green Book and they do show a cutaway dwg of the flywheel but it is a dwg.
The pic shows the fingers and springs.
Thanks, Oj
Attached Images
File Type: jpg 006.JPG (140.8 KB, 51 views)
oj is offline   Reply With Quote
Old 04-29-2020, 06:14 PM   #2
Ken/Alabama
Senior Member
 
Ken/Alabama's Avatar
 
Join Date: May 2010
Location: Alabama
Posts: 3,261
Default Re: '40ish Flywheel question

This is a 40 Flywheel. Takes a 9” clutch.
Attached Images
File Type: jpg 04D976AE-6E7C-4A46-B696-09EEF7A65158.jpg (30.5 KB, 47 views)
Ken/Alabama is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 04-29-2020, 06:20 PM   #3
Ronnieroadster
Senior Member
 
Ronnieroadster's Avatar
 
Join Date: Dec 2010
Location: East Coast in CT
Posts: 1,529
Default Re: '40ish Flywheel question

Any Ford flathead flywheel that used the long style 11 PP like what you show in the photo would be flat. Seems to me the clutch disk your using with the PP is way to thick thus creating the problem. Fix install a matched replacement set both disk and pressure plate. 11 inch assembly's were usually Ford truck
Ronnieroadster
__________________
I use the F word a lot no not that word these words Flathead , Focus and Finish.
"Life Member of the Bonneville 200 MPH Club using a Ford Flathead block"
Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline.
First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH
Ronnieroadster is offline   Reply With Quote
Old 04-29-2020, 06:42 PM   #4
JSeery
Member Emeritus
 
JSeery's Avatar
 
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
Default Re: '40ish Flywheel question

I have a question, why would you be using an 11 inch clutch/pressure plate? That is a heavy truck unit. Hot Rod and 11 inch clutch don't belong in the same paragraph!
JSeery is offline   Reply With Quote
Old 04-30-2020, 12:51 AM   #5
Brian
Senior Member
 
Brian's Avatar
 
Join Date: May 2010
Location: Masterton, New Zealand
Posts: 3,834
Default Re: '40ish Flywheel question

I'm no expert on 11" stuff, but the fingers on that pressure plate don't look flathead Ford to me....
And as Ronnie stated, any Ford flathead flywheel is machined flat, ie, same plane for both clutch plate and pp.
__________________
Unfortunately, two half wits don't make a whole wit!
Brian is offline   Reply With Quote
Old 04-30-2020, 10:11 AM   #6
oj
Senior Member
 
Join Date: May 2010
Posts: 293
Default Re: '40ish Flywheel question

Sponsored Links (Register now to hide all advertisements)
Quote:
Originally Posted by Ronnieroadster View Post
Any Ford flathead flywheel that used the long style 11 PP like what you show in the photo would be flat. Seems to me the clutch disk your using with the PP is way to thick thus creating the problem. Fix install a matched replacement set both disk and pressure plate. 11 inch assembly's were usually Ford truck
Ronnieroadster
The clutch pressure plate are matched Ford #'s 7563 & 7550 disc, but I see now there are a bunch of variations, I was told that they were from a pickup and that hot rodders used them back in the day.
Now I really don't know what to do, I hate the thought of remachining the flywheel for the smaller pressure plate, it is a full days job to get it perfectly aligned to do the drilling.
Maybe machining some spacers to move out the pressure plate and perhaps replacing the springs with a lesser weight?
Why does everything have to be so complicated?
oj is offline   Reply With Quote
Old 04-30-2020, 10:43 AM   #7
1931 flamingo
Senior Member
 
1931 flamingo's Avatar
 
Join Date: May 2010
Location: new britain,ct 06052
Posts: 9,390
Default Re: '40ish Flywheel question

When I put together the Olds (1955) to mate with the 39 tranny in my 32 5W back in 61, the "little books" said to use an 11" PP with a 10 1/2" disc. Everything bolted right up. Used a hydraulic slave cyl mounted to the tranny linked to modified 40 linkage.
When I put the 4 cyl Tempest in later I used a Taxi clutch set-up out of the Pontiac book.
Paul in CT
1931 flamingo is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 04:40 PM.