Sectional of alloy head EFI

[Ratu 5]

When the Falcon six-cylinder alloy head with EFI was first introduced to the public there was a big fuss made of it in the press. Ford made certain we all knew they had developed the in-line six in a major way. It was bang up to date with the latest electronic fuel injection! They also went to a great deal of trouble making the engine look as good as they could. There was a cast alloy rocker cover and the inlet manifold had individual runners with a plenum on top of the engine. The plenum repeated the pattern featured on the rocker cover. It did look good.

One of the promotional pictures which was featured in the press and also in some of the Ford advertising was a cut away diagram of the engine. This was a sectional drawing taken across the engine (cut was left to right, across the crankshaft, not parallel to it). The drawing illustrated the inlet manifold and inlet port leading to the combustion chamber. You could see where the injectors were. The piston and rod were shown, as was the exhaust manifold.

Some years later a similar drawing was published by Ford showing off the new multi-mode inlet manifold fitted on the sohc engine.

Unfortunately, I lost my copies of these two illustrations. I was wondering whether anyone had examples of them still. If so can you put them up here? It would be interesting to see them once again.

Cheers!

[Boingk 862]

Hi mate, I've seen this drawing as well. The sectional drawing reveals a very thin lower intake wall on the short-side radius and runner, so be careful if porting anywhere there. I would limit to a quick swiffer to remove casting defects.

 

What you would be better doing is concentrating your efforts to the outside / top of the runner as it will help with the gently curved profile of the runner in encouraging flow numbers.

 

From a peak of about 180-ish cfm you should end up with 200 to 210cfm is you do a decent job.

 

 - boingk