I and my son purchased a model t overhead cam model T engine that has not been started for about 20 year after it was put together. We have opened the engine up to see what the condition is after all of these years. The engine has a drilled crankshaft and pressure oiling system. The thing that we are wondering about is this. The rods are aluminum billet machined from one piece and after taking off a rod cap to see if it had babbitt or inserts, we find that the rods have either. They are running on the rod journal with just the oil supplied by the pump. The question is: has any body done this and what is your experience with this set up? The horsepower that this engine could develop is around 100 HP. If you want to call me with your thoughts, I would like to hear from you. Tom Elliott 503-644-9374
You can also E-mail me with your thoughts. Thanks for your help. Tom and Scott
The Menasco D4-87 aircraft engine had aluminum rods runing on a steel crankshaft.
Pictures are worth a thousand words (sometimes more).
Mark, and pictures are worth a thousand dollars (sometimes more),
Aluminum rods often run without inserts. I would be more concerned with whether they fit OK and have oiling provisions.
So true Terry. Sometimes thousands of dollars.
The main bearings in my VW Lupo is the aluminium block - no inserts, so aluminium as an approved bearing material if the oiling is OK.
Mine are aluminum with pressurized oiling and do great. Also running a Fronty Head. I'll post a pic in a second post (I hope)
sorry I couldn't post the pic, file was to big. You'll just have to take my word for it, runs great!
Volvo 4 cylinder motors run the cam in the aluminium head with out bearings. Scott
Thanks guys for all the input. I had the feeling that this setup would be ok as it is. The oil pump looks to be able to supply a good volume of oil. I will have Scott post some pictures of the engine.