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denis4x4 · 12-11-2019, 10:08 AM

I have one of each and both are driven hard. Last Year, I took my inserted engine to Bert's Model A to have some stuff checked and everything was fine. It was built in 1985 and it was built using Kabota tractor inserts. That engine was run at 3500 RPM on a dyno and the babbited engine was run on the same dyno at 3200 RPM. These engines produced 60 and 59 horsepower at the rear wheels respectively. Neither engines have a pressure oil system.

Quite frankly, I don't think that it makes a bit of difference based on my observations. However, I'm a firm advocate of having A engines balanced by a professional machine shop.

The Durango-Silverton Narrow gauge railroad has a facility in town to do babbit pouring. Someday I'm going to ask if they would do a Model A engine.

12-11-2019, 10:08 AM	#7
denis4x4 Senior Member Join Date: May 2010 Location: Durango CO Posts: 1,309	Re: Babbit vs Inserts I have one of each and both are driven hard. Last Year, I took my inserted engine to Bert's Model A to have some stuff checked and everything was fine. It was built in 1985 and it was built using Kabota tractor inserts. That engine was run at 3500 RPM on a dyno and the babbited engine was run on the same dyno at 3200 RPM. These engines produced 60 and 59 horsepower at the rear wheels respectively. Neither engines have a pressure oil system. Quite frankly, I don't think that it makes a bit of difference based on my observations. However, I'm a firm advocate of having A engines balanced by a professional machine shop. The Durango-Silverton Narrow gauge railroad has a facility in town to do babbit pouring. Someday I'm going to ask if they would do a Model A engine. __________________ No restorable Model A's were harmed in the building of this truck! Last edited by denis4x4; 12-11-2019 at 04:11 PM.