Combining two cars

Have a 31 Coupe almost completely original.
Purchased a Mitchel OD and Mitchel Transmission which were installed on a frame from a '31 slant window with a rebuilt engine.

Now since I'm getting older have decided i would like to have The Coupe (some sentimental reasons) with the Mitchel components and the rebuilt engine.

Now the Question and comments:
Is it better to put the coupe body on the chassis or remove the drive train from the frame and install it under the coupe. I will have to remove the standard drive train from the coupe.

Would appreciate your comments. all will be considered.
thanks Frankl
 
Have a 31 Coupe almost completely original.
Purchased a Mitchel OD and Mitchel Transmission which were installed on a frame from a '31 slant window with a rebuilt engine.

Now since I'm getting older have decided i would like to have The Coupe (some sentimental reasons) with the Mitchel components and the rebuilt engine.

Now the Question and comments:
Is it better to put the coupe body on the chassis or remove the drive train from the frame and install it under the coupe. I will have to remove the standard drive train from the coupe.

Would appreciate your comments. all will be considered.
thanks Frankl


If it was me, I'd remove the drivetrain you want from the frame and reinstall it on the coupe. I find it much easier to move drivetrain components than to mess about with body, fenders, running boards, brackets, yada yada. You can do this in phases - strip the frame and set the drivetrain components aside. Pull the rear assembly from the coupe from the U-joint backwards and set it aside. Pull the engine and ****** as a unit from the coupe and move it to the frame. Install the not-wanted rear end into the frame. Install the engine and ****** you want into the coupe. Finally, install the rear assembly into the coupe.

BTW, the Mitchell O/D for the slants uses slightly different input and output shafts/housings than the Mitchell for the non-slants. The one for the slants will fit into the non-slants just fine, but not the converse.
 
Hello, I would agree changing over the driveline would be better choice, when you disturb the body and mount it on another frame, requiring a lot of re shimming to get doors ,hood ,etc realigned.
 
Also you would need to deal with what number was used on the title.
Both 31s - swap the plates too. The title may say CP Coupe or SD sedan. That's usually easy to fix at the DMV when you point out "their" mistake......
 
Have a 31 Coupe almost completely original.
Purchased a Mitchel OD and Mitchel Transmission which were installed on a frame from a '31 slant window with a rebuilt engine.

Now since I'm getting older have decided i would like to have The Coupe (some sentimental reasons) with the Mitchel components and the rebuilt engine.

Now the Question and comments:
Is it better to put the coupe body on the chassis or remove the drive train from the frame and install it under the coupe. I will have to remove the standard drive train from the coupe.

Would appreciate your comments. all will be considered.
thanks Frankl

Whichever way decide you are going to love the Mitchell/Mitchell combo. The 15% over 1st & 2nd and the 26% O/D work perfectly together, IMO. Around town I rarely get out of 2nd.
 
I would agree to put the components into the coupe. The only caveat would be if there was some serious damage to the coupe frame or the need to paint the fenders and splash apron.
 
About ten years ago, I purchased a 29 coupe expressly to move the entire drivetrain to my dormant 29 cabriolet project. It saved me several years time to get the cabriolet together, and everything mechanically sorted out before disassembly for painting.

The coupe was registered to its engine number while the cabriolet had a DMV assigned number (Blue Plate tag riveted to B pillar.) while it was actually matching original engine and frame numbers. That is no problem for the cabriolet with the DMV. However, if I want to put the coupe on the road, I don’t have an engine in it that matched the registration; and the coupe’s frame number does not match the motor number.

The registration irregularities will be resolved once my Burtz block is completed and installed in the cabriolet. The coupe and its engine can then be reunited.
 
Jay Jay, thanks for your comments. when i started thinking about this project i was going to move the body. as i thought about the body issues made me think about moving the engine and drive train.
I plan to move the engine and drive train. Please advise as to this plan.
1.remove the engine , drive train and rear end from the coupe.
2.remove the engine/transmission from chassis and install in coupe
3.remove rearend and OD from chassis and install in coupe.
4.remove old frontend from coupe.
5.Remove front end with new brakes and install in Coupe.

frontend, brakes and rearend have ll been rebuilt.

thanks for any comments.
frank
 
thanks to everyone for you comments. I don't look forward to working with the DMV. I'm going to try to keep it all registered as the original coupe.

I went day before yesterday to renew my drivers license. i wanted to put Sr. on my license as i live with my son Jr. I was asked if the Sr. was on my birth certificate.!!!!!!!
 
Jay Jay, thanks for your comments. when i started thinking about this project i was going to move the body. as i thought about the body issues made me think about moving the engine and drive train.
I plan to move the engine and drive train. Please advise as to this plan.
1.remove the engine , drive train and rear end from the coupe.
2.remove the engine/transmission from chassis and install in coupe
3.remove rearend and OD from chassis and install in coupe.
4.remove old frontend from coupe.
5.Remove front end with new brakes and install in Coupe.

frontend, brakes and rearend have ll been rebuilt.

thanks for any comments.
frank

Frank - this seems like a reasonable approach.

As far as DMV: a few comments. All of the below are with the caveat that I know absolutely nothing about how Kansas titles or registers automobiles. My experience is solely within California.

As you'll see by searching any of the many threads on this subject, Model As did not originally have "VIN". The "VIN" is a construct that came onto being in the 1950s, well after Model As were manufactured. Ford initially designated the engine number to be the serial number of the car, and in most (but not all) cases stamped that same number onto the frame on the assembly line. That number followed the car, and presumably was used to establish titles in those states that titled cars.

Over the years many, if not most, Model As had their engines swapped out even if the original frames remained with the car. At the same time, the concept of "VIN" became a number that was permanently attached to the structure of the car, be it firewall, frame, top of the dash panel, wherever. Attempting to match the "VIN" on the title is trivial when the engine number matches, but not so much if the engine has been swapped out. The number stamped on the frame is not at all easily seen without removing the body.

I would suggest that the first thing to do would be to find your title and see what number has been entered into the space for "VIN". There are several possibilities.



  • The number there is the same number that is on the old engine.
  • The number there is not the same number that is on the old engine, but it looks like a Model A engine number.
  • There is some completely random number there.


In the first case, if you want to keep square but use a new engine, you will either go through a very involved process to update the title to the number of the new engine, or else grind off the number on the new engine and restamp the old number. I freely admit that some folks believe the latter approach to be illegal or at least unethical. My opinion, and solely mine, is that you are not misrepresenting anything about the car, you are simply stamping a number into a piece of cast iron. But that is your decision.

In the second case, likely the engine has been swapped out sometime in the past (as I noted above, not at all uncommon). Your title does not match the engine anyhow, so changing the engine again doesn't change this situation.

In the third case, likely somewhere there is a stamp or plate with this assigned VIN on the car. If this is the case changing the engine is irrelevant, the "VIN" on the title follows this stamp/plate, not the engine number.

As an aside, if the car is currently registered then I find it very difficult to believe that anyone is going to look or even care what the engine number is.

And unless Kansas DMV is way, way different from California DMV, I would NOT suggest going to DMV and asking any questions. As you saw from your experience trying to add "Sr." to your driver's license, the quality of DMV employees tends to be quite inconsistent.
 
Hello, Years ago I recall talking to an Ford authorized engine rebuilder , and he said it was common practice to grind off the existing number and restamp the replacement engine with the number of old engine it was replacing. He also mentioned that in Pennsylvania it was illegal to have no engine number at all , sometimes it would be checked at inspection time, which was twice a year at that time.So in Pennsylvania at least the old engine number was restamped , or at least supposed to be.
 
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