The latest in super-lightweight valves...

[Boink]

 

[Basil]

Great for racing applications where evey little bit of weight matters.

 

[AngliaGT]

I also read where if you drill holes in the engine block
it with breathe better.

 

[Basil]

I also read where if you drill holes in the engine block
it with breathe better.

Don’t forget the tops of the pistons

 

[DrEntropy]

And take out th' "MOWOG":

 

[Gliderman8]

And take out th' "MOWOG":
View attachment 77157

About 20 years ago I was mowing my lawn with a very sick 12 hp Briggs and Stratton engine. I heard a “pop” and felt something “hot” fly by my head and the engine quit.
Upon inspection I found a piece of the block broke loose and went airborne. Incoming!

 

[bobhustead]

These valves are commonly used in Dark Matter Induction (DMI) engines.

Bob

 

[welove3]

Just imagine how many more revs you will get... with the starter motor!

 

[mikephillips]

And no worries over hydraulic lock if there's a coolant leak

 

[PAUL161]

The valves will stay much cooler with that mod!

 

[Popeye]

Don't forget the coffee can exhaust to deal with the increased flow!

 

[mikephillips]

And the extra big bass speakers to let those within 5 miles know you're coming.