51 Merc into 1940 fordor flywheel clutch questiond
 

I have stock 1940 Fordor which I have owned since 1968. Haven't driven in 30+ yrs.

want to install hopped up 1951 Merc flathead in it and mate to the column shift 1940 3 speed.
what flywheel and pressure plate do I use? will the ones off the 1940 flathead work? Waht bellhousing and starter plate fits this application?
Thanks for your help

Re: 51 Merc into 1940 fordor flywheel clutch questiond
 

You can only use an 8ba flywheel. Others will chime in about your other questions.


R

Re: 51 Merc into 1940 fordor flywheel clutch questiond
 

By "8BA" do you mean specifically a '49-'51 Ford flywheel or just a generic post '48 flywheel. I believe the proper combination is the Merc flywheel and pressure plate and the appropriate disc (I has been 30 years since I did this; I do know it can be done mixing and matching stock parts.)

Re: 51 Merc into 1940 fordor flywheel clutch questiond
 

sactopv: Read all this:
https://www.google.com/search?q=inst...hrome&ie=UTF-8

You need to use the 1949-51 Merc flywheel, pressure plate and full bell housing with the matching starter plate. You can use the stock 40 throwout bearing. I have an 8BA/8CM in my 40 with the stock 40 transmission. You also need the 49-51 Merc rear sump oil pan or an early Ford pick up rear sump oil pan.
Here's more:
https://www.fordbarn.com/forum/showt...ll+8ba+36+ford
You must read all of this thread.
https://www.fordbarn.com/forum/showt...gine+1940+ford

Re: 51 Merc into 1940 fordor flywheel clutch questiond
 

The 49 through early 1951 all used the same 1 3/8" 10-spline as the early Ford. Sometime around February of 1951, the change to the 1-inch 10-spline started along with the big cast iron bell housing.

A person needs the pressed steel half bell of the earlier 1949-E51 Mercury cars. The 49-E51 Borg & Beck clutch can be used or a Ford flywheel can be re-drilled for a Long type clutch of either the 9-inch or 10-inch variety for earlt Fords with the 1 3/8" 10-spline.