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Ronnieroadster · 10-25-2019, 04:59 PM

You have the possible crack locations correct But there is one more location for cracks the lifter/valve area the wall thats on the other side of the water jacket I have found cracks in this area on a few blocks most machine shops never mag check in this area.. Another area of concern is the buildup of sand type material in the water passages especially between the rear cylinders on both sides of the block. That material needs to be scraped out of the water passages by hand. Welcome to the world of Flathead fun good luck with your new project.
Ronnieroadster

10-25-2019, 04:59 PM	#2
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,529	Re: Flathead advice and help needed You have the possible crack locations correct But there is one more location for cracks the lifter/valve area the wall thats on the other side of the water jacket I have found cracks in this area on a few blocks most machine shops never mag check in this area.. Another area of concern is the buildup of sand type material in the water passages especially between the rear cylinders on both sides of the block. That material needs to be scraped out of the water passages by hand. Welcome to the world of Flathead fun good luck with your new project. Ronnieroadster __________________ I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH