MTFCA Forum

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

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.

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.

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.

My apologies I should have been clear with my question. I have a 24 engine and transmission that was rebuilt by Ron's Machine Shop. I was unclear if I could just swap the hogs head but sounds like that's not an option. So I will do the engine transmission swap and change the floor boards. I attached a photo of the engine.

Floor boards will have to be custom made.
Consider changing/swapping the brake & low pedals.
Low pedal is a little bit of work to remove & re-rivet the cam. HH has to come off. Brake is nothing.
Then you still have what still looks like a 26-7 in the cockpit using original floor boards & mat.

Interesting, you have an early needle nose pan. Why??
You will have to use the smaller crank pulley. That will change designed fan speed & require a special size belt..