The Ford Barn

DkFordor · 03-03-2023, 06:19 AM

Part 1: Background and general idea

In the on-going restoration of my 1931 Fordor I am currently looking into the possibility of adding a Laycock overdrive. I already bought two overdrives, one Laycock P-type, and the other a Laycock P/J-type. The differences between the two are small - the P-type is slightly older and uses an asbestos friction material in the clutch, the P/J-type is newer and (therefore) uses an asbestos-free friction material. The P-type is able to run a little bit higher pressure internally due to this - but I wouldn't expect a fairly stock fourbanger to be able to bring either even close to the limit of their capability

I also have the relevant drive shafts for the two, splined at the OD end and with the cam driving the oil pump of the ODs.

I have searched the forums and the internet for information about the install and the modifications necessary, and found lots of good information.

To my knowledge there are no companies doing conversion kits around here - so the general idea is to do everything by ourselves. I do have the assistance of a skilled machinist and mechanic - my aim is to gather as much relevant information for the task at hand.

If I manage to get it all working I may attempt a write-up of the process and some details for future use.

I apologize in advance that this is already somewhat lengthy - hope you'll bear with me nonetheless

Below follows a couple more posts with descriptions and questions - mechanical and electrical issues separately.

03-03-2023, 06:19 AM	#1
DkFordor Member Join Date: Oct 2020 Location: Denmark, Northern Europe Posts: 73	Embarking on a Laycock-overdrive odyssey Part 1: Background and general idea In the on-going restoration of my 1931 Fordor I am currently looking into the possibility of adding a Laycock overdrive. I already bought two overdrives, one Laycock P-type, and the other a Laycock P/J-type. The differences between the two are small - the P-type is slightly older and uses an asbestos friction material in the clutch, the P/J-type is newer and (therefore) uses an asbestos-free friction material. The P-type is able to run a little bit higher pressure internally due to this - but I wouldn't expect a fairly stock fourbanger to be able to bring either even close to the limit of their capability I also have the relevant drive shafts for the two, splined at the OD end and with the cam driving the oil pump of the ODs. I have searched the forums and the internet for information about the install and the modifications necessary, and found lots of good information. To my knowledge there are no companies doing conversion kits around here - so the general idea is to do everything by ourselves. I do have the assistance of a skilled machinist and mechanic - my aim is to gather as much relevant information for the task at hand. If I manage to get it all working I may attempt a write-up of the process and some details for future use. I apologize in advance that this is already somewhat lengthy - hope you'll bear with me nonetheless Below follows a couple more posts with descriptions and questions - mechanical and electrical issues separately.