I've had the pieces for a few years and have been told that they are Frontenac. They don't look like part of Model T conversion to me but I know nothing about T's. Anyone able to shed some light on the origin of these parts? Thanks.
Many one-off OHV or OHC conversions for early engines have no name or maker logo cast into them. This could be a Fronty or a Hal or who knows what. You'd have to have the illustrated parts list for both to verify the configuration of parts and pieces. Best of luck! They are goodies, that's for sure.
I'll look at a Model T block and timing cover when I get home tonight, and see if this would bolt-up. I'll let you know if somebody else doesn't answer the question before then.
At fist glance I'm thinking McDowell, but the lower end is odd. There is no crankshaft stub clearance hole, or half hole, the block bolt pattern isn't T or A. If it is 3/4-1/2 size Ford block it may be a Contental engine conversion for a Midget power plant. Nice wall hanger anyway!
Here is a pic of a Hal. http://www.nwvs.org/Technical/Engines/ModelABE014.shtml Check out all the other engines on the site, its great.
I believe they are Model T but not Frontenac. I have a DO Fronty engine and I don't believe these pieces are the same. There were other companies that made DO and SO heads for Model Ts (and As, and Brand X cars). There were also some "one off" heads made by individuals during the period. Still, these are valuable items and could be helpful to someone building a overhead cam head for a T.-GZ
After looking at one of my T blocks and timing covers, and looking at a lot of photos of T conversions tonight, I'm pretty sure that this is not for a T block. Of course, just like there were one-off heads, there were also one-off (or low production) special "near Ford" blocks.
You need to contact a guy named Kem Robertson of Huntsville AL.He's an aerospace engineer who has been researching the subject of aftermarket heads (and other pieces) for 4 cylinder Fords for several years now. His ultimate goal is a book on the people who developed all the pieces and their products but in the research process he has become a veritable encyclopedia of such stuff. If you can get pictures to him, I'm sure hef can identify your parts. All I can lay my hands on right now is his snail mail adress which is: 2918 Thompson Circle, Huntsville, AL 35801