Technical New to flathead engines

Got a running flathead in my 49 shoebox how did I performe a flush on the engine to clean it out. Any advice Is appreciated thanks

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To easy. Remember that each side of the block is separate. You have to flush both sides. I just put a house in at the top of the head and rinsed them down through the water pumps. You could drain the block and fill out with cooling flush then rinse it all out again. If you really need to you can pull the radiator and take it to a radiator shop and they can acid bath the radiator.

 

So I can just fill the block here and flush it it.

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Not if there is thermostats in that 8BA motor. They wont let you flush unless they are open or just remove them, easy fix. Put them back when you are done. Pull the hose, you can see the Tstat if they are in there.

Vantucky...LOL.

 

Also consider if you flush from the top hose down through the engine you might want to take off your bottom radiator hoses - otherwise you just flush the crud into the bottom radiator tank.

If you leave the hoses on water will come out the top hoses but likely all that will happen is once you start the engine the crud will move back from the lower tank into the engine.

If it is really gunked you will getter better results by flushing the engine and radiator separately.

Cheers

 

Inexpensive and effective.
Use 100% vinegar in your system.

https://www.google.com/search?q=vin...ggeo3YSwDg&start=0&sa=N&biw=320&bih=529&dpr=2

 

You might want to loosen the heater hoses and shove the garden hose in there to flush the heater as well.