Well call me crazy, This is what I did, I drilled 3/32nds holes that will serve as ports for the de-carbon APF treatment across the top of the 270 degree plastic manifold runners being careful not to drill through.
Its only about 3/32nds thick. Then I took a 3/32nds steel stock in ground to a point and heated & melted threw the final amount of pastic material so no plastic would drop through in to the runner.
Now the foam chemical only needs 90 degrees to reach the head ports. I can do 1 cylinder at a time.
I have very short fine thread machine screws to fill the holes with a small amoumt of sealer.
I can now feed cleaner directly to the intake valves after warm up when running at temprature.
First I made a custom nozzle straw so the can can be upright.
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I have taped over the drilled ports temporary
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These are the screws that will turn right in making there own threads with a bit of sealant.
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There is clear tape over the other holes in the 8 runners that are hard to see.
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Just like this. its getting up to 32 degrees finally so I'l do it tommorrow.
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After going through the 8 ports I will get it back to operating tenp & remove spark plugs & fill up.
I want to thank Brad out of King George VA. for the 2 cans of APF, An Amsoil dealer out of VA.