Engine swap 24 engine 26 roadster

[Blairgr]

Hi Folks
I recently purchased a rebuilt 24 engine (July 24 according to the SN) and want to install it in my 1926 Roadster. What issues will I run into if any? I see the pedals are different and I’m not sure if the hog’s head are interchangeable. I have read that some of them are not and just want to see if this combination is or if it will even fit into the car correctly. If there are any complications or things that will need changed, I would appreciate the heads up before tearing into it.
Thank you

[DanTreace]

Quick answer is lots of issues if you only have a 24 complete block with 24 transmission, and no hogshead.

Your 26 would have the wide transmission brake drum, that uses the late 26-27 hogshead with the wide space pedals. And your floor boards are made for those wide pedals. Your 26 has the water outlet fan bracket, unique to 26-27. Your 26 will have the 4 dip pan.

Using a 26-27 hogshead on early block and transmission will affect the brake band operation.

The pre-26 have a 2 1/2" center to center pedal spacing for the narrow brake drum.

3" center to center on 26-27 wide drum hogshead to operate the wide brake band.

3 inch center 2627.jpg (99.93 KiB) Viewed 69 times

[ModelTWoods]

If your 26 has an original motor and transmission and just needs to be replaced for some reason, my suggestion would be to use just the rebuilt 24 short block using the 26 transmission, oil pan, and head with water outlet (or at least the outlet). That way, it is a drop in replacement and there's no trouble spots. My grandfather did this on his 27 coupe, back in the day, except he went a step further; he used only a 22 bare block from a salvage yard and used the 27 crank, rods, pistons, oil pan, and transmission. He did use the 22 head and front timing cover, mounting the fan down lower than the original 27 fans, but it worked. I have since corrected all these modifications.

[George House]

Howdy Gerald,… If I read your request for advice correctly, I understood you purchased a ‘24 engine, crankcase, tranny and tranny cover…since you didn’t reveal it as simply a ‘short block’. That right? If so, install it and change out the floorboards to fit the earlier pedals.